diff options
134 files changed, 3258 insertions, 2801 deletions
diff --git a/MAINTAINERS b/MAINTAINERS index 43761a0..751a307 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4000,7 +4000,7 @@ S: Maintained F: include/linux/delayacct.h F: kernel/delayacct.c -PERFORMANCE COUNTER SUBSYSTEM +PERFORMANCE EVENTS SUBSYSTEM M: Peter Zijlstra <a.p.zijlstra@chello.nl> M: Paul Mackerras <paulus@samba.org> M: Ingo Molnar <mingo@elte.hu> diff --git a/arch/arm/include/asm/unistd.h b/arch/arm/include/asm/unistd.h index 9122c9e..89f7ead 100644 --- a/arch/arm/include/asm/unistd.h +++ b/arch/arm/include/asm/unistd.h @@ -390,7 +390,7 @@ #define __NR_preadv (__NR_SYSCALL_BASE+361) #define __NR_pwritev (__NR_SYSCALL_BASE+362) #define __NR_rt_tgsigqueueinfo (__NR_SYSCALL_BASE+363) -#define __NR_perf_counter_open (__NR_SYSCALL_BASE+364) +#define __NR_perf_event_open (__NR_SYSCALL_BASE+364) /* * The following SWIs are ARM private. diff --git a/arch/arm/kernel/calls.S b/arch/arm/kernel/calls.S index ecfa989..fafce1b 100644 --- a/arch/arm/kernel/calls.S +++ b/arch/arm/kernel/calls.S @@ -373,7 +373,7 @@ CALL(sys_preadv) CALL(sys_pwritev) CALL(sys_rt_tgsigqueueinfo) - CALL(sys_perf_counter_open) + CALL(sys_perf_event_open) #ifndef syscalls_counted .equ syscalls_padding, ((NR_syscalls + 3) & ~3) - NR_syscalls #define syscalls_counted diff --git a/arch/blackfin/include/asm/unistd.h b/arch/blackfin/include/asm/unistd.h index c8e7ee4..02b1529 100644 --- a/arch/blackfin/include/asm/unistd.h +++ b/arch/blackfin/include/asm/unistd.h @@ -381,7 +381,7 @@ #define __NR_preadv 366 #define __NR_pwritev 367 #define __NR_rt_tgsigqueueinfo 368 -#define __NR_perf_counter_open 369 +#define __NR_perf_event_open 369 #define __NR_syscall 370 #define NR_syscalls __NR_syscall diff --git a/arch/blackfin/mach-common/entry.S b/arch/blackfin/mach-common/entry.S index 01af24c..1e7cac2 100644 --- a/arch/blackfin/mach-common/entry.S +++ b/arch/blackfin/mach-common/entry.S @@ -1620,7 +1620,7 @@ ENTRY(_sys_call_table) .long _sys_preadv .long _sys_pwritev .long _sys_rt_tgsigqueueinfo - .long _sys_perf_counter_open + .long _sys_perf_event_open .rept NR_syscalls-(.-_sys_call_table)/4 .long _sys_ni_syscall diff --git a/arch/frv/Kconfig b/arch/frv/Kconfig index b86e19c..4b5830b 100644 --- a/arch/frv/Kconfig +++ b/arch/frv/Kconfig @@ -7,7 +7,7 @@ config FRV default y select HAVE_IDE select HAVE_ARCH_TRACEHOOK - select HAVE_PERF_COUNTERS + select HAVE_PERF_EVENTS config ZONE_DMA bool diff --git a/arch/frv/include/asm/perf_counter.h b/arch/frv/include/asm/perf_event.h index ccf726e..a69e015 100644 --- a/arch/frv/include/asm/perf_counter.h +++ b/arch/frv/include/asm/perf_event.h @@ -1,4 +1,4 @@ -/* FRV performance counter support +/* FRV performance event support * * Copyright (C) 2009 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) @@ -9,9 +9,9 @@ * 2 of the Licence, or (at your option) any later version. */ -#ifndef _ASM_PERF_COUNTER_H -#define _ASM_PERF_COUNTER_H +#ifndef _ASM_PERF_EVENT_H +#define _ASM_PERF_EVENT_H -#define PERF_COUNTER_INDEX_OFFSET 0 +#define PERF_EVENT_INDEX_OFFSET 0 -#endif /* _ASM_PERF_COUNTER_H */ +#endif /* _ASM_PERF_EVENT_H */ diff --git a/arch/frv/include/asm/unistd.h b/arch/frv/include/asm/unistd.h index 4a8fb42..be6ef0f 100644 --- a/arch/frv/include/asm/unistd.h +++ b/arch/frv/include/asm/unistd.h @@ -342,7 +342,7 @@ #define __NR_preadv 333 #define __NR_pwritev 334 #define __NR_rt_tgsigqueueinfo 335 -#define __NR_perf_counter_open 336 +#define __NR_perf_event_open 336 #ifdef __KERNEL__ diff --git a/arch/frv/kernel/entry.S b/arch/frv/kernel/entry.S index fde1e44..189397e 100644 --- a/arch/frv/kernel/entry.S +++ b/arch/frv/kernel/entry.S @@ -1525,6 +1525,6 @@ sys_call_table: .long sys_preadv .long sys_pwritev .long sys_rt_tgsigqueueinfo /* 335 */ - .long sys_perf_counter_open + .long sys_perf_event_open syscall_table_size = (. - sys_call_table) diff --git a/arch/frv/lib/Makefile b/arch/frv/lib/Makefile index 0a37721..f470975 100644 --- a/arch/frv/lib/Makefile +++ b/arch/frv/lib/Makefile @@ -5,4 +5,4 @@ lib-y := \ __ashldi3.o __lshrdi3.o __muldi3.o __ashrdi3.o __negdi2.o __ucmpdi2.o \ checksum.o memcpy.o memset.o atomic-ops.o atomic64-ops.o \ - outsl_ns.o outsl_sw.o insl_ns.o insl_sw.o cache.o perf_counter.o + outsl_ns.o outsl_sw.o insl_ns.o insl_sw.o cache.o perf_event.o diff --git a/arch/frv/lib/perf_counter.c b/arch/frv/lib/perf_event.c index 2000fee..9ac5acf 100644 --- a/arch/frv/lib/perf_counter.c +++ b/arch/frv/lib/perf_event.c @@ -1,4 +1,4 @@ -/* Performance counter handling +/* Performance event handling * * Copyright (C) 2009 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) @@ -9,11 +9,11 @@ * 2 of the Licence, or (at your option) any later version. */ -#include <linux/perf_counter.h> +#include <linux/perf_event.h> /* - * mark the performance counter as pending + * mark the performance event as pending */ -void set_perf_counter_pending(void) +void set_perf_event_pending(void) { } diff --git a/arch/m68k/include/asm/unistd.h b/arch/m68k/include/asm/unistd.h index 946d869..48b87f5 100644 --- a/arch/m68k/include/asm/unistd.h +++ b/arch/m68k/include/asm/unistd.h @@ -335,7 +335,7 @@ #define __NR_preadv 329 #define __NR_pwritev 330 #define __NR_rt_tgsigqueueinfo 331 -#define __NR_perf_counter_open 332 +#define __NR_perf_event_open 332 #ifdef __KERNEL__ diff --git a/arch/m68k/kernel/entry.S b/arch/m68k/kernel/entry.S index 922f52e..c5b3363 100644 --- a/arch/m68k/kernel/entry.S +++ b/arch/m68k/kernel/entry.S @@ -756,5 +756,5 @@ sys_call_table: .long sys_preadv .long sys_pwritev /* 330 */ .long sys_rt_tgsigqueueinfo - .long sys_perf_counter_open + .long sys_perf_event_open diff --git a/arch/m68knommu/kernel/syscalltable.S b/arch/m68knommu/kernel/syscalltable.S index 0ae123e..23535cc 100644 --- a/arch/m68knommu/kernel/syscalltable.S +++ b/arch/m68knommu/kernel/syscalltable.S @@ -350,7 +350,7 @@ ENTRY(sys_call_table) .long sys_preadv .long sys_pwritev /* 330 */ .long sys_rt_tgsigqueueinfo - .long sys_perf_counter_open + .long sys_perf_event_open .rept NR_syscalls-(.-sys_call_table)/4 .long sys_ni_syscall diff --git a/arch/microblaze/include/asm/unistd.h b/arch/microblaze/include/asm/unistd.h index 0b85232..cb05a07 100644 --- a/arch/microblaze/include/asm/unistd.h +++ b/arch/microblaze/include/asm/unistd.h @@ -381,7 +381,7 @@ #define __NR_preadv 363 /* new */ #define __NR_pwritev 364 /* new */ #define __NR_rt_tgsigqueueinfo 365 /* new */ -#define __NR_perf_counter_open 366 /* new */ +#define __NR_perf_event_open 366 /* new */ #define __NR_syscalls 367 diff --git a/arch/microblaze/kernel/syscall_table.S b/arch/microblaze/kernel/syscall_table.S index 4572160..ecec191 100644 --- a/arch/microblaze/kernel/syscall_table.S +++ b/arch/microblaze/kernel/syscall_table.S @@ -370,4 +370,4 @@ ENTRY(sys_call_table) .long sys_ni_syscall .long sys_ni_syscall .long sys_rt_tgsigqueueinfo /* 365 */ - .long sys_perf_counter_open + .long sys_perf_event_open diff --git a/arch/mips/include/asm/unistd.h b/arch/mips/include/asm/unistd.h index e753a77..8c9dfa9 100644 --- a/arch/mips/include/asm/unistd.h +++ b/arch/mips/include/asm/unistd.h @@ -353,7 +353,7 @@ #define __NR_preadv (__NR_Linux + 330) #define __NR_pwritev (__NR_Linux + 331) #define __NR_rt_tgsigqueueinfo (__NR_Linux + 332) -#define __NR_perf_counter_open (__NR_Linux + 333) +#define __NR_perf_event_open (__NR_Linux + 333) #define __NR_accept4 (__NR_Linux + 334) /* @@ -664,7 +664,7 @@ #define __NR_preadv (__NR_Linux + 289) #define __NR_pwritev (__NR_Linux + 290) #define __NR_rt_tgsigqueueinfo (__NR_Linux + 291) -#define __NR_perf_counter_open (__NR_Linux + 292) +#define __NR_perf_event_open (__NR_Linux + 292) #define __NR_accept4 (__NR_Linux + 293) /* @@ -979,7 +979,7 @@ #define __NR_preadv (__NR_Linux + 293) #define __NR_pwritev (__NR_Linux + 294) #define __NR_rt_tgsigqueueinfo (__NR_Linux + 295) -#define __NR_perf_counter_open (__NR_Linux + 296) +#define __NR_perf_event_open (__NR_Linux + 296) #define __NR_accept4 (__NR_Linux + 297) /* diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S index 7c2de4f..fd2a9bb 100644 --- a/arch/mips/kernel/scall32-o32.S +++ b/arch/mips/kernel/scall32-o32.S @@ -581,7 +581,7 @@ einval: li v0, -ENOSYS sys sys_preadv 6 /* 4330 */ sys sys_pwritev 6 sys sys_rt_tgsigqueueinfo 4 - sys sys_perf_counter_open 5 + sys sys_perf_event_open 5 sys sys_accept4 4 .endm diff --git a/arch/mips/kernel/scall64-64.S b/arch/mips/kernel/scall64-64.S index b97b993..18bf7f3 100644 --- a/arch/mips/kernel/scall64-64.S +++ b/arch/mips/kernel/scall64-64.S @@ -418,6 +418,6 @@ sys_call_table: PTR sys_preadv PTR sys_pwritev /* 5390 */ PTR sys_rt_tgsigqueueinfo - PTR sys_perf_counter_open + PTR sys_perf_event_open PTR sys_accept4 .size sys_call_table,.-sys_call_table diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S index 1a6ae12..6ebc079 100644 --- a/arch/mips/kernel/scall64-n32.S +++ b/arch/mips/kernel/scall64-n32.S @@ -416,6 +416,6 @@ EXPORT(sysn32_call_table) PTR sys_preadv PTR sys_pwritev PTR compat_sys_rt_tgsigqueueinfo /* 5295 */ - PTR sys_perf_counter_open + PTR sys_perf_event_open PTR sys_accept4 .size sysn32_call_table,.-sysn32_call_table diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S index cd31087..9bbf977 100644 --- a/arch/mips/kernel/scall64-o32.S +++ b/arch/mips/kernel/scall64-o32.S @@ -536,6 +536,6 @@ sys_call_table: PTR compat_sys_preadv /* 4330 */ PTR compat_sys_pwritev PTR compat_sys_rt_tgsigqueueinfo - PTR sys_perf_counter_open + PTR sys_perf_event_open PTR sys_accept4 .size sys_call_table,.-sys_call_table diff --git a/arch/mn10300/include/asm/unistd.h b/arch/mn10300/include/asm/unistd.h index fad6861..2a98393 100644 --- a/arch/mn10300/include/asm/unistd.h +++ b/arch/mn10300/include/asm/unistd.h @@ -347,7 +347,7 @@ #define __NR_preadv 334 #define __NR_pwritev 335 #define __NR_rt_tgsigqueueinfo 336 -#define __NR_perf_counter_open 337 +#define __NR_perf_event_open 337 #ifdef __KERNEL__ diff --git a/arch/mn10300/kernel/entry.S b/arch/mn10300/kernel/entry.S index e0d2563..a94e7ea 100644 --- a/arch/mn10300/kernel/entry.S +++ b/arch/mn10300/kernel/entry.S @@ -723,7 +723,7 @@ ENTRY(sys_call_table) .long sys_preadv .long sys_pwritev /* 335 */ .long sys_rt_tgsigqueueinfo - .long sys_perf_counter_open + .long sys_perf_event_open nr_syscalls=(.-sys_call_table)/4 diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig index 06f8d5b..f388dc6 100644 --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -16,7 +16,7 @@ config PARISC select RTC_DRV_GENERIC select INIT_ALL_POSSIBLE select BUG - select HAVE_PERF_COUNTERS + select HAVE_PERF_EVENTS select GENERIC_ATOMIC64 if !64BIT help The PA-RISC microprocessor is designed by Hewlett-Packard and used diff --git a/arch/parisc/include/asm/perf_counter.h b/arch/parisc/include/asm/perf_counter.h deleted file mode 100644 index dc9e829..0000000 --- a/arch/parisc/include/asm/perf_counter.h +++ /dev/null @@ -1,7 +0,0 @@ -#ifndef __ASM_PARISC_PERF_COUNTER_H -#define __ASM_PARISC_PERF_COUNTER_H - -/* parisc only supports software counters through this interface. */ -static inline void set_perf_counter_pending(void) { } - -#endif /* __ASM_PARISC_PERF_COUNTER_H */ diff --git a/arch/parisc/include/asm/perf_event.h b/arch/parisc/include/asm/perf_event.h new file mode 100644 index 0000000..cc146427 --- /dev/null +++ b/arch/parisc/include/asm/perf_event.h @@ -0,0 +1,7 @@ +#ifndef __ASM_PARISC_PERF_EVENT_H +#define __ASM_PARISC_PERF_EVENT_H + +/* parisc only supports software events through this interface. */ +static inline void set_perf_event_pending(void) { } + +#endif /* __ASM_PARISC_PERF_EVENT_H */ diff --git a/arch/parisc/include/asm/unistd.h b/arch/parisc/include/asm/unistd.h index f3d3b8b..cda1583 100644 --- a/arch/parisc/include/asm/unistd.h +++ b/arch/parisc/include/asm/unistd.h @@ -810,9 +810,9 @@ #define __NR_preadv (__NR_Linux + 315) #define __NR_pwritev (__NR_Linux + 316) #define __NR_rt_tgsigqueueinfo (__NR_Linux + 317) -#define __NR_perf_counter_open (__NR_Linux + 318) +#define __NR_perf_event_open (__NR_Linux + 318) -#define __NR_Linux_syscalls (__NR_perf_counter_open + 1) +#define __NR_Linux_syscalls (__NR_perf_event_open + 1) #define __IGNORE_select /* newselect */ diff --git a/arch/parisc/kernel/syscall_table.S b/arch/parisc/kernel/syscall_table.S index cf145eb..843f423 100644 --- a/arch/parisc/kernel/syscall_table.S +++ b/arch/parisc/kernel/syscall_table.S @@ -416,7 +416,7 @@ ENTRY_COMP(preadv) /* 315 */ ENTRY_COMP(pwritev) ENTRY_COMP(rt_tgsigqueueinfo) - ENTRY_SAME(perf_counter_open) + ENTRY_SAME(perf_event_open) /* Nothing yet */ diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 8250902..4fd4790 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -129,7 +129,7 @@ config PPC select HAVE_OPROFILE select HAVE_SYSCALL_WRAPPERS if PPC64 select GENERIC_ATOMIC64 if PPC32 - select HAVE_PERF_COUNTERS + select HAVE_PERF_EVENTS config EARLY_PRINTK bool diff --git a/arch/powerpc/include/asm/hw_irq.h b/arch/powerpc/include/asm/hw_irq.h index e73d554..abbc2aa 100644 --- a/arch/powerpc/include/asm/hw_irq.h +++ b/arch/powerpc/include/asm/hw_irq.h @@ -135,43 +135,43 @@ static inline int irqs_disabled_flags(unsigned long flags) */ struct irq_chip; -#ifdef CONFIG_PERF_COUNTERS +#ifdef CONFIG_PERF_EVENTS #ifdef CONFIG_PPC64 -static inline unsigned long test_perf_counter_pending(void) +static inline unsigned long test_perf_event_pending(void) { unsigned long x; asm volatile("lbz %0,%1(13)" : "=r" (x) - : "i" (offsetof(struct paca_struct, perf_counter_pending))); + : "i" (offsetof(struct paca_struct, perf_event_pending))); return x; } -static inline void set_perf_counter_pending(void) +static inline void set_perf_event_pending(void) { asm volatile("stb %0,%1(13)" : : "r" (1), - "i" (offsetof(struct paca_struct, perf_counter_pending))); + "i" (offsetof(struct paca_struct, perf_event_pending))); } -static inline void clear_perf_counter_pending(void) +static inline void clear_perf_event_pending(void) { asm volatile("stb %0,%1(13)" : : "r" (0), - "i" (offsetof(struct paca_struct, perf_counter_pending))); + "i" (offsetof(struct paca_struct, perf_event_pending))); } #endif /* CONFIG_PPC64 */ -#else /* CONFIG_PERF_COUNTERS */ +#else /* CONFIG_PERF_EVENTS */ -static inline unsigned long test_perf_counter_pending(void) +static inline unsigned long test_perf_event_pending(void) { return 0; } -static inline void clear_perf_counter_pending(void) {} -#endif /* CONFIG_PERF_COUNTERS */ +static inline void clear_perf_event_pending(void) {} +#endif /* CONFIG_PERF_EVENTS */ #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_HW_IRQ_H */ diff --git a/arch/powerpc/include/asm/paca.h b/arch/powerpc/include/asm/paca.h index b634456..7d8514c 100644 --- a/arch/powerpc/include/asm/paca.h +++ b/arch/powerpc/include/asm/paca.h @@ -122,7 +122,7 @@ struct paca_struct { u8 soft_enabled; /* irq soft-enable flag */ u8 hard_enabled; /* set if irqs are enabled in MSR */ u8 io_sync; /* writel() needs spin_unlock sync */ - u8 perf_counter_pending; /* PM interrupt while soft-disabled */ + u8 perf_event_pending; /* PM interrupt while soft-disabled */ /* Stuff for accurate time accounting */ u64 user_time; /* accumulated usermode TB ticks */ diff --git a/arch/powerpc/include/asm/perf_counter.h b/arch/powerpc/include/asm/perf_event.h index 0ea0639..2499aaa 100644 --- a/arch/powerpc/include/asm/perf_counter.h +++ b/arch/powerpc/include/asm/perf_event.h @@ -1,5 +1,5 @@ /* - * Performance counter support - PowerPC-specific definitions. + * Performance event support - PowerPC-specific definitions. * * Copyright 2008-2009 Paul Mackerras, IBM Corporation. * @@ -12,9 +12,9 @@ #include <asm/hw_irq.h> -#define MAX_HWCOUNTERS 8 +#define MAX_HWEVENTS 8 #define MAX_EVENT_ALTERNATIVES 8 -#define MAX_LIMITED_HWCOUNTERS 2 +#define MAX_LIMITED_HWEVENTS 2 /* * This struct provides the constants and functions needed to @@ -22,18 +22,18 @@ */ struct power_pmu { const char *name; - int n_counter; + int n_event; int max_alternatives; unsigned long add_fields; unsigned long test_adder; int (*compute_mmcr)(u64 events[], int n_ev, unsigned int hwc[], unsigned long mmcr[]); - int (*get_constraint)(u64 event, unsigned long *mskp, + int (*get_constraint)(u64 event_id, unsigned long *mskp, unsigned long *valp); - int (*get_alternatives)(u64 event, unsigned int flags, + int (*get_alternatives)(u64 event_id, unsigned int flags, u64 alt[]); void (*disable_pmc)(unsigned int pmc, unsigned long mmcr[]); - int (*limited_pmc_event)(u64 event); + int (*limited_pmc_event)(u64 event_id); u32 flags; int n_generic; int *generic_events; @@ -61,10 +61,10 @@ struct pt_regs; extern unsigned long perf_misc_flags(struct pt_regs *regs); extern unsigned long perf_instruction_pointer(struct pt_regs *regs); -#define PERF_COUNTER_INDEX_OFFSET 1 +#define PERF_EVENT_INDEX_OFFSET 1 /* - * Only override the default definitions in include/linux/perf_counter.h + * Only override the default definitions in include/linux/perf_event.h * if we have hardware PMU support. */ #ifdef CONFIG_PPC_PERF_CTRS @@ -73,14 +73,14 @@ extern unsigned long perf_instruction_pointer(struct pt_regs *regs); /* * The power_pmu.get_constraint function returns a 32/64-bit value and - * a 32/64-bit mask that express the constraints between this event and + * a 32/64-bit mask that express the constraints between this event_id and * other events. * * The value and mask are divided up into (non-overlapping) bitfields * of three different types: * * Select field: this expresses the constraint that some set of bits - * in MMCR* needs to be set to a specific value for this event. For a + * in MMCR* needs to be set to a specific value for this event_id. For a * select field, the mask contains 1s in every bit of the field, and * the value contains a unique value for each possible setting of the * MMCR* bits. The constraint checking code will ensure that two events @@ -102,9 +102,9 @@ extern unsigned long perf_instruction_pointer(struct pt_regs *regs); * possible.) For N classes, the field is N+1 bits wide, and each class * is assigned one bit from the least-significant N bits. The mask has * only the most-significant bit set, and the value has only the bit - * for the event's class set. The test_adder has the least significant + * for the event_id's class set. The test_adder has the least significant * bit set in the field. * - * If an event is not subject to the constraint expressed by a particular + * If an event_id is not subject to the constraint expressed by a particular * field, then it will have 0 in both the mask and value for that field. */ diff --git a/arch/powerpc/include/asm/systbl.h b/arch/powerpc/include/asm/systbl.h index ed24bd9..c7d671a 100644 --- a/arch/powerpc/include/asm/systbl.h +++ b/arch/powerpc/include/asm/systbl.h @@ -322,7 +322,7 @@ SYSCALL_SPU(epoll_create1) SYSCALL_SPU(dup3) SYSCALL_SPU(pipe2) SYSCALL(inotify_init1) -SYSCALL_SPU(perf_counter_open) +SYSCALL_SPU(perf_event_open) COMPAT_SYS_SPU(preadv) COMPAT_SYS_SPU(pwritev) COMPAT_SYS(rt_tgsigqueueinfo) diff --git a/arch/powerpc/include/asm/unistd.h b/arch/powerpc/include/asm/unistd.h index cef080b..f6ca761 100644 --- a/arch/powerpc/include/asm/unistd.h +++ b/arch/powerpc/include/asm/unistd.h @@ -341,7 +341,7 @@ #define __NR_dup3 316 #define __NR_pipe2 317 #define __NR_inotify_init1 318 -#define __NR_perf_counter_open 319 +#define __NR_perf_event_open 319 #define __NR_preadv 320 #define __NR_pwritev 321 #define __NR_rt_tgsigqueueinfo 322 diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile index 569f79c..b23664a 100644 --- a/arch/powerpc/kernel/Makefile +++ b/arch/powerpc/kernel/Makefile @@ -97,7 +97,7 @@ obj64-$(CONFIG_AUDIT) += compat_audit.o obj-$(CONFIG_DYNAMIC_FTRACE) += ftrace.o obj-$(CONFIG_FUNCTION_GRAPH_TRACER) += ftrace.o -obj-$(CONFIG_PPC_PERF_CTRS) += perf_counter.o perf_callchain.o +obj-$(CONFIG_PPC_PERF_CTRS) += perf_event.o perf_callchain.o obj64-$(CONFIG_PPC_PERF_CTRS) += power4-pmu.o ppc970-pmu.o power5-pmu.o \ power5+-pmu.o power6-pmu.o power7-pmu.o obj32-$(CONFIG_PPC_PERF_CTRS) += mpc7450-pmu.o diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c index f0df285..0812b0f 100644 --- a/arch/powerpc/kernel/asm-offsets.c +++ b/arch/powerpc/kernel/asm-offsets.c @@ -133,7 +133,7 @@ int main(void) DEFINE(PACAKMSR, offsetof(struct paca_struct, kernel_msr)); DEFINE(PACASOFTIRQEN, offsetof(struct paca_struct, soft_enabled)); DEFINE(PACAHARDIRQEN, offsetof(struct paca_struct, hard_enabled)); - DEFINE(PACAPERFPEND, offsetof(struct paca_struct, perf_counter_pending)); + DEFINE(PACAPERFPEND, offsetof(struct paca_struct, perf_event_pending)); DEFINE(PACACONTEXTID, offsetof(struct paca_struct, context.id)); #ifdef CONFIG_PPC_MM_SLICES DEFINE(PACALOWSLICESPSIZE, offsetof(struct paca_struct, diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S index 66bcda3..900e0ee 100644 --- a/arch/powerpc/kernel/entry_64.S +++ b/arch/powerpc/kernel/entry_64.S @@ -556,14 +556,14 @@ ALT_FW_FTR_SECTION_END_IFCLR(FW_FEATURE_ISERIES) 2: TRACE_AND_RESTORE_IRQ(r5); -#ifdef CONFIG_PERF_COUNTERS - /* check paca->perf_counter_pending if we're enabling ints */ +#ifdef CONFIG_PERF_EVENTS + /* check paca->perf_event_pending if we're enabling ints */ lbz r3,PACAPERFPEND(r13) and. r3,r3,r5 beq 27f - bl .perf_counter_do_pending + bl .perf_event_do_pending 27: -#endif /* CONFIG_PERF_COUNTERS */ +#endif /* CONFIG_PERF_EVENTS */ /* extract EE bit and use it to restore paca->hard_enabled */ ld r3,_MSR(r1) diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index f7f376e..e5d1211 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -53,7 +53,7 @@ #include <linux/bootmem.h> #include <linux/pci.h> #include <linux/debugfs.h> -#include <linux/perf_counter.h> +#include <linux/perf_event.h> #include <asm/uaccess.h> #include <asm/system.h> @@ -138,9 +138,9 @@ notrace void raw_local_irq_restore(unsigned long en) } #endif /* CONFIG_PPC_STD_MMU_64 */ - if (test_perf_counter_pending()) { - clear_perf_counter_pending(); - perf_counter_do_pending(); + if (test_perf_event_pending()) { + clear_perf_event_pending(); + perf_event_do_pending(); } /* diff --git a/arch/powerpc/kernel/mpc7450-pmu.c b/arch/powerpc/kernel/mpc7450-pmu.c index cc466d0..09d7202 100644 --- a/arch/powerpc/kernel/mpc7450-pmu.c +++ b/arch/powerpc/kernel/mpc7450-pmu.c @@ -9,7 +9,7 @@ * 2 of the License, or (at your option) any later version. */ #include <linux/string.h> -#include <linux/perf_counter.h> +#include <linux/perf_event.h> #include <asm/reg.h> #include <asm/cputable.h> diff --git a/arch/powerpc/kernel/perf_callchain.c b/arch/powerpc/kernel/perf_callchain.c index f74b62c..0a03cf7 100644 --- a/arch/powerpc/kernel/perf_callchain.c +++ b/arch/powerpc/kernel/perf_callchain.c @@ -10,7 +10,7 @@ */ #include <linux/kernel.h> #include <linux/sched.h> -#include <linux/perf_counter.h> +#include <linux/perf_event.h> #include <linux/percpu.h> #include <linux/uaccess.h> #include <linux/mm.h> diff --git a/arch/powerpc/kernel/perf_counter.c b/arch/powerpc/kernel/perf_event.c index 5ccf9bc..197b7d9 100644 --- a/arch/powerpc/kernel/perf_counter.c +++ b/arch/powerpc/kernel/perf_event.c @@ -1,5 +1,5 @@ /* - * Performance counter support - powerpc architecture code + * Performance event support - powerpc architecture code * * Copyright 2008-2009 Paul Mackerras, IBM Corporation. * @@ -10,7 +10,7 @@ */ #include <linux/kernel.h> #include <linux/sched.h> -#include <linux/perf_counter.h> +#include <linux/perf_event.h> #include <linux/percpu.h> #include <linux/hardirq.h> #include <asm/reg.h> @@ -19,24 +19,24 @@ #include <asm/firmware.h> #include <asm/ptrace.h> -struct cpu_hw_counters { - int n_counters; +struct cpu_hw_events { + int n_events; int n_percpu; int disabled; int n_added; int n_limited; u8 pmcs_enabled; - struct perf_counter *counter[MAX_HWCOUNTERS]; - u64 events[MAX_HWCOUNTERS]; - unsigned int flags[MAX_HWCOUNTERS]; + struct perf_event *event[MAX_HWEVENTS]; + u64 events[MAX_HWEVENTS]; + unsigned int flags[MAX_HWEVENTS]; unsigned long mmcr[3]; - struct perf_counter *limited_counter[MAX_LIMITED_HWCOUNTERS]; - u8 limited_hwidx[MAX_LIMITED_HWCOUNTERS]; - u64 alternatives[MAX_HWCOUNTERS][MAX_EVENT_ALTERNATIVES]; - unsigned long amasks[MAX_HWCOUNTERS][MAX_EVENT_ALTERNATIVES]; - unsigned long avalues[MAX_HWCOUNTERS][MAX_EVENT_ALTERNATIVES]; + struct perf_event *limited_event[MAX_LIMITED_HWEVENTS]; + u8 limited_hwidx[MAX_LIMITED_HWEVENTS]; + u64 alternatives[MAX_HWEVENTS][MAX_EVENT_ALTERNATIVES]; + unsigned long amasks[MAX_HWEVENTS][MAX_EVENT_ALTERNATIVES]; + unsigned long avalues[MAX_HWEVENTS][MAX_EVENT_ALTERNATIVES]; }; -DEFINE_PER_CPU(struct cpu_hw_counters, cpu_hw_counters); +DEFINE_PER_CPU(struct cpu_hw_events, cpu_hw_events); struct power_pmu *ppmu; @@ -47,7 +47,7 @@ struct power_pmu *ppmu; * where the hypervisor bit is forced to 1 (as on Apple G5 processors), * then we need to use the FCHV bit to ignore kernel events. */ -static unsigned int freeze_counters_kernel = MMCR0_FCS; +static unsigned int freeze_events_kernel = MMCR0_FCS; /* * 32-bit doesn't have MMCRA but does have an MMCR2, @@ -122,14 +122,14 @@ static inline u32 perf_get_misc_flags(struct pt_regs *regs) if (ppmu->flags & PPMU_ALT_SIPR) { if (mmcra & POWER6_MMCRA_SIHV) - return PERF_EVENT_MISC_HYPERVISOR; + return PERF_RECORD_MISC_HYPERVISOR; return (mmcra & POWER6_MMCRA_SIPR) ? - PERF_EVENT_MISC_USER : PERF_EVENT_MISC_KERNEL; + PERF_RECORD_MISC_USER : PERF_RECORD_MISC_KERNEL; } if (mmcra & MMCRA_SIHV) - return PERF_EVENT_MISC_HYPERVISOR; - return (mmcra & MMCRA_SIPR) ? PERF_EVENT_MISC_USER : - PERF_EVENT_MISC_KERNEL; + return PERF_RECORD_MISC_HYPERVISOR; + return (mmcra & MMCRA_SIPR) ? PERF_RECORD_MISC_USER : + PERF_RECORD_MISC_KERNEL; } /* @@ -152,9 +152,9 @@ static inline int perf_intr_is_nmi(struct pt_regs *regs) #endif /* CONFIG_PPC64 */ -static void perf_counter_interrupt(struct pt_regs *regs); +static void perf_event_interrupt(struct pt_regs *regs); -void perf_counter_print_debug(void) +void perf_event_print_debug(void) { } @@ -240,31 +240,31 @@ static void write_pmc(int idx, unsigned long val) * Check if a set of events can all go on the PMU at once. * If they can't, this will look at alternative codes for the events * and see if any combination of alternative codes is feasible. - * The feasible set is returned in event[]. + * The feasible set is returned in event_id[]. */ -static int power_check_constraints(struct cpu_hw_counters *cpuhw, - u64 event[], unsigned int cflags[], +static int power_check_constraints(struct cpu_hw_events *cpuhw, + u64 event_id[], unsigned int cflags[], int n_ev) { unsigned long mask, value, nv; - unsigned long smasks[MAX_HWCOUNTERS], svalues[MAX_HWCOUNTERS]; - int n_alt[MAX_HWCOUNTERS], choice[MAX_HWCOUNTERS]; + unsigned long smasks[MAX_HWEVENTS], svalues[MAX_HWEVENTS]; + int n_alt[MAX_HWEVENTS], choice[MAX_HWEVENTS]; int i, j; unsigned long addf = ppmu->add_fields; unsigned long tadd = ppmu->test_adder; - if (n_ev > ppmu->n_counter) + if (n_ev > ppmu->n_event) return -1; /* First see if the events will go on as-is */ for (i = 0; i < n_ev; ++i) { if ((cflags[i] & PPMU_LIMITED_PMC_REQD) - && !ppmu->limited_pmc_event(event[i])) { - ppmu->get_alternatives(event[i], cflags[i], + && !ppmu->limited_pmc_event(event_id[i])) { + ppmu->get_alternatives(event_id[i], cflags[i], cpuhw->alternatives[i]); - event[i] = cpuhw->alternatives[i][0]; + event_id[i] = cpuhw->alternatives[i][0]; } - if (ppmu->get_constraint(event[i], &cpuhw->amasks[i][0], + if (ppmu->get_constraint(event_id[i], &cpuhw->amasks[i][0], &cpuhw->avalues[i][0])) return -1; } @@ -287,7 +287,7 @@ static int power_check_constraints(struct cpu_hw_counters *cpuhw, return -1; for (i = 0; i < n_ev; ++i) { choice[i] = 0; - n_alt[i] = ppmu->get_alternatives(event[i], cflags[i], + n_alt[i] = ppmu->get_alternatives(event_id[i], cflags[i], cpuhw->alternatives[i]); for (j = 1; j < n_alt[i]; ++j) ppmu->get_constraint(cpuhw->alternatives[i][j], @@ -307,7 +307,7 @@ static int power_check_constraints(struct cpu_hw_counters *cpuhw, j = choice[i]; } /* - * See if any alternative k for event i, + * See if any alternative k for event_id i, * where k > j, will satisfy the constraints. */ while (++j < n_alt[i]) { @@ -321,16 +321,16 @@ static int power_check_constraints(struct cpu_hw_counters *cpuhw, if (j >= n_alt[i]) { /* * No feasible alternative, backtrack - * to event i-1 and continue enumerating its + * to event_id i-1 and continue enumerating its * alternatives from where we got up to. */ if (--i < 0) return -1; } else { /* - * Found a feasible alternative for event i, - * remember where we got up to with this event, - * go on to the next event, and start with + * Found a feasible alternative for event_id i, + * remember where we got up to with this event_id, + * go on to the next event_id, and start with * the first alternative for it. */ choice[i] = j; @@ -345,21 +345,21 @@ static int power_check_constraints(struct cpu_hw_counters *cpuhw, /* OK, we have a feasible combination, tell the caller the solution */ for (i = 0; i < n_ev; ++i) - event[i] = cpuhw->alternatives[i][choice[i]]; + event_id[i] = cpuhw->alternatives[i][choice[i]]; return 0; } /* - * Check if newly-added counters have consistent settings for + * Check if newly-added events have consistent settings for * exclude_{user,kernel,hv} with each other and any previously - * added counters. + * added events. */ -static int check_excludes(struct perf_counter **ctrs, unsigned int cflags[], +static int check_excludes(struct perf_event **ctrs, unsigned int cflags[], int n_prev, int n_new) { int eu = 0, ek = 0, eh = 0; int i, n, first; - struct perf_counter *counter; + struct perf_event *event; n = n_prev + n_new; if (n <= 1) @@ -371,15 +371,15 @@ static int check_excludes(struct perf_counter **ctrs, unsigned int cflags[], cflags[i] &= ~PPMU_LIMITED_PMC_REQD; continue; } - counter = ctrs[i]; + event = ctrs[i]; if (first) { - eu = counter->attr.exclude_user; - ek = counter->attr.exclude_kernel; - eh = counter->attr.exclude_hv; + eu = event->attr.exclude_user; + ek = event->attr.exclude_kernel; + eh = event->attr.exclude_hv; first = 0; - } else if (counter->attr.exclude_user != eu || - counter->attr.exclude_kernel != ek || - counter->attr.exclude_hv != eh) { + } else if (event->attr.exclude_user != eu || + event->attr.exclude_kernel != ek || + event->attr.exclude_hv != eh) { return -EAGAIN; } } @@ -392,11 +392,11 @@ static int check_excludes(struct perf_counter **ctrs, unsigned int cflags[], return 0; } -static void power_pmu_read(struct perf_counter *counter) +static void power_pmu_read(struct perf_event *event) { s64 val, delta, prev; - if (!counter->hw.idx) + if (!event->hw.idx) return; /* * Performance monitor interrupts come even when interrupts @@ -404,21 +404,21 @@ static void power_pmu_read(struct perf_counter *counter) * Therefore we treat them like NMIs. */ do { - prev = atomic64_read(&counter->hw.prev_count); + prev = atomic64_read(&event->hw.prev_count); barrier(); - val = read_pmc(counter->hw.idx); - } while (atomic64_cmpxchg(&counter->hw.prev_count, prev, val) != prev); + val = read_pmc(event->hw.idx); + } while (atomic64_cmpxchg(&event->hw.prev_count, prev, val) != prev); /* The counters are only 32 bits wide */ delta = (val - prev) & 0xfffffffful; - atomic64_add(delta, &counter->count); - atomic64_sub(delta, &counter->hw.period_left); + atomic64_add(delta, &event->count); + atomic64_sub(delta, &event->hw.period_left); } /* * On some machines, PMC5 and PMC6 can't be written, don't respect * the freeze conditions, and don't generate interrupts. This tells - * us if `counter' is using such a PMC. + * us if `event' is using such a PMC. */ static int is_limited_pmc(int pmcnum) { @@ -426,53 +426,53 @@ static int is_limited_pmc(int pmcnum) && (pmcnum == 5 || pmcnum == 6); } -static void freeze_limited_counters(struct cpu_hw_counters *cpuhw, +static void freeze_limited_events(struct cpu_hw_events *cpuhw, unsigned long pmc5, unsigned long pmc6) { - struct perf_counter *counter; + struct perf_event *event; u64 val, prev, delta; int i; for (i = 0; i < cpuhw->n_limited; ++i) { - counter = cpuhw->limited_counter[i]; - if (!counter->hw.idx) + event = cpuhw->limited_event[i]; + if (!event->hw.idx) continue; - val = (counter->hw.idx == 5) ? pmc5 : pmc6; - prev = atomic64_read(&counter->hw.prev_count); - counter->hw.idx = 0; + val = (event->hw.idx == 5) ? pmc5 : pmc6; + prev = atomic64_read(&event->hw.prev_count); + event->hw.idx = 0; delta = (val - prev) & 0xfffffffful; - atomic64_add(delta, &counter->count); + atomic64_add(delta, &event->count); } } -static void thaw_limited_counters(struct cpu_hw_counters *cpuhw, +static void thaw_limited_events(struct cpu_hw_events *cpuhw, unsigned long pmc5, unsigned long pmc6) { - struct perf_counter *counter; + struct perf_event *event; u64 val; int i; for (i = 0; i < cpuhw->n_limited; ++i) { - counter = cpuhw->limited_counter[i]; - counter->hw.idx = cpuhw->limited_hwidx[i]; - val = (counter->hw.idx == 5) ? pmc5 : pmc6; - atomic64_set(&counter->hw.prev_count, val); - perf_counter_update_userpage(counter); + event = cpuhw->limited_event[i]; + event->hw.idx = cpuhw->limited_hwidx[i]; + val = (event->hw.idx == 5) ? pmc5 : pmc6; + atomic64_set(&event->hw.prev_count, val); + perf_event_update_userpage(event); } } /* - * Since limited counters don't respect the freeze conditions, we + * Since limited events don't respect the freeze conditions, we * have to read them immediately after freezing or unfreezing the - * other counters. We try to keep the values from the limited - * counters as consistent as possible by keeping the delay (in + * other events. We try to keep the values from the limited + * events as consistent as possible by keeping the delay (in * cycles and instructions) between freezing/unfreezing and reading - * the limited counters as small and consistent as possible. - * Therefore, if any limited counters are in use, we read them + * the limited events as small and consistent as possible. + * Therefore, if any limited events are in use, we read them * both, and always in the same order, to minimize variability, * and do it inside the same asm that writes MMCR0. */ -static void write_mmcr0(struct cpu_hw_counters *cpuhw, unsigned long mmcr0) +static void write_mmcr0(struct cpu_hw_events *cpuhw, unsigned long mmcr0) { unsigned long pmc5, pmc6; @@ -485,7 +485,7 @@ static void write_mmcr0(struct cpu_hw_counters *cpuhw, unsigned long mmcr0) * Write MMCR0, then read PMC5 and PMC6 immediately. * To ensure we don't get a performance monitor interrupt * between writing MMCR0 and freezing/thawing the limited - * counters, we first write MMCR0 with the counter overflow + * events, we first write MMCR0 with the event overflow * interrupt enable bits turned off. */ asm volatile("mtspr %3,%2; mfspr %0,%4; mfspr %1,%5" @@ -495,12 +495,12 @@ static void write_mmcr0(struct cpu_hw_counters *cpuhw, unsigned long mmcr0) "i" (SPRN_PMC5), "i" (SPRN_PMC6)); if (mmcr0 & MMCR0_FC) - freeze_limited_counters(cpuhw, pmc5, pmc6); + freeze_limited_events(cpuhw, pmc5, pmc6); else - thaw_limited_counters(cpuhw, pmc5, pmc6); + thaw_limited_events(cpuhw, pmc5, pmc6); /* - * Write the full MMCR0 including the counter overflow interrupt + * Write the full MMCR0 including the event overflow interrupt * enable bits, if necessary. */ if (mmcr0 & (MMCR0_PMC1CE | MMCR0_PMCjCE)) @@ -508,18 +508,18 @@ static void write_mmcr0(struct cpu_hw_counters *cpuhw, unsigned long mmcr0) } /* - * Disable all counters to prevent PMU interrupts and to allow - * counters to be added or removed. + * Disable all events to prevent PMU interrupts and to allow + * events to be added or removed. */ void hw_perf_disable(void) { - struct cpu_hw_counters *cpuhw; + struct cpu_hw_events *cpuhw; unsigned long flags; if (!ppmu) return; local_irq_save(flags); - cpuhw = &__get_cpu_var(cpu_hw_counters); + cpuhw = &__get_cpu_var(cpu_hw_events); if (!cpuhw->disabled) { cpuhw->disabled = 1; @@ -545,7 +545,7 @@ void hw_perf_disable(void) /* * Set the 'freeze counters' bit. * The barrier is to make sure the mtspr has been - * executed and the PMU has frozen the counters + * executed and the PMU has frozen the events * before we return. */ write_mmcr0(cpuhw, mfspr(SPRN_MMCR0) | MMCR0_FC); @@ -555,26 +555,26 @@ void hw_perf_disable(void) } /* - * Re-enable all counters if disable == 0. - * If we were previously disabled and counters were added, then + * Re-enable all events if disable == 0. + * If we were previously disabled and events were added, then * put the new config on the PMU. */ void hw_perf_enable(void) { - struct perf_counter *counter; - struct cpu_hw_counters *cpuhw; + struct perf_event *event; + struct cpu_hw_events *cpuhw; unsigned long flags; long i; unsigned long val; s64 left; - unsigned int hwc_index[MAX_HWCOUNTERS]; + unsigned int hwc_index[MAX_HWEVENTS]; int n_lim; int idx; if (!ppmu) return; local_irq_save(flags); - cpuhw = &__get_cpu_var(cpu_hw_counters); + cpuhw = &__get_cpu_var(cpu_hw_events); if (!cpuhw->disabled) { local_irq_restore(flags); return; @@ -582,23 +582,23 @@ void hw_perf_enable(void) cpuhw->disabled = 0; /* - * If we didn't change anything, or only removed counters, + * If we didn't change anything, or only removed events, * no need to recalculate MMCR* settings and reset the PMCs. * Just reenable the PMU with the current MMCR* settings - * (possibly updated for removal of counters). + * (possibly updated for removal of events). */ if (!cpuhw->n_added) { mtspr(SPRN_MMCRA, cpuhw->mmcr[2] & ~MMCRA_SAMPLE_ENABLE); mtspr(SPRN_MMCR1, cpuhw->mmcr[1]); - if (cpuhw->n_counters == 0) + if (cpuhw->n_events == 0) ppc_set_pmu_inuse(0); goto out_enable; } /* - * Compute MMCR* values for the new set of counters + * Compute MMCR* values for the new set of events */ - if (ppmu->compute_mmcr(cpuhw->events, cpuhw->n_counters, hwc_index, + if (ppmu->compute_mmcr(cpuhw->events, cpuhw->n_events, hwc_index, cpuhw->mmcr)) { /* shouldn't ever get here */ printk(KERN_ERR "oops compute_mmcr failed\n"); @@ -607,22 +607,22 @@ void hw_perf_enable(void) /* * Add in MMCR0 freeze bits corresponding to the - * attr.exclude_* bits for the first counter. - * We have already checked that all counters have the - * same values for these bits as the first counter. + * attr.exclude_* bits for the first event. + * We have already checked that all events have the + * same values for these bits as the first event. */ - counter = cpuhw->counter[0]; - if (counter->attr.exclude_user) + event = cpuhw->event[0]; + if (event->attr.exclude_user) cpuhw->mmcr[0] |= MMCR0_FCP; - if (counter->attr.exclude_kernel) - cpuhw->mmcr[0] |= freeze_counters_kernel; - if (counter->attr.exclude_hv) + if (event->attr.exclude_kernel) + cpuhw->mmcr[0] |= freeze_events_kernel; + if (event->attr.exclude_hv) cpuhw->mmcr[0] |= MMCR0_FCHV; /* * Write the new configuration to MMCR* with the freeze - * bit set and set the hardware counters to their initial values. - * Then unfreeze the counters. + * bit set and set the hardware events to their initial values. + * Then unfreeze the events. */ ppc_set_pmu_inuse(1); mtspr(SPRN_MMCRA, cpuhw->mmcr[2] & ~MMCRA_SAMPLE_ENABLE); @@ -631,43 +631,43 @@ void hw_perf_enable(void) | MMCR0_FC); /* - * Read off any pre-existing counters that need to move + * Read off any pre-existing events that need to move * to another PMC. */ - for (i = 0; i < cpuhw->n_counters; ++i) { - counter = cpuhw->counter[i]; - if (counter->hw.idx && counter->hw.idx != hwc_index[i] + 1) { - power_pmu_read(counter); - write_pmc(counter->hw.idx, 0); - counter->hw.idx = 0; + for (i = 0; i < cpuhw->n_events; ++i) { + event = cpuhw->event[i]; + if (event->hw.idx && event->hw.idx != hwc_index[i] + 1) { + power_pmu_read(event); + write_pmc(event->hw.idx, 0); + event->hw.idx = 0; } } /* - * Initialize the PMCs for all the new and moved counters. + * Initialize the PMCs for all the new and moved events. */ cpuhw->n_limited = n_lim = 0; - for (i = 0; i < cpuhw->n_counters; ++i) { - counter = cpuhw->counter[i]; - if (counter->hw.idx) + for (i = 0; i < cpuhw->n_events; ++i) { + event = cpuhw->event[i]; + if (event->hw.idx) continue; idx = hwc_index[i] + 1; if (is_limited_pmc(idx)) { - cpuhw->limited_counter[n_lim] = counter; + cpuhw->limited_event[n_lim] = event; cpuhw->limited_hwidx[n_lim] = idx; ++n_lim; continue; } val = 0; - if (counter->hw.sample_period) { - left = atomic64_read(&counter->hw.period_left); + if (event->hw.sample_period) { + left = atomic64_read(&event->hw.period_left); if (left < 0x80000000L) val = 0x80000000L - left; } - atomic64_set(&counter->hw.prev_count, val); - counter->hw.idx = idx; + atomic64_set(&event->hw.prev_count, val); + event->hw.idx = idx; write_pmc(idx, val); - perf_counter_update_userpage(counter); + perf_event_update_userpage(event); } cpuhw->n_limited = n_lim; cpuhw->mmcr[0] |= MMCR0_PMXE | MMCR0_FCECE; @@ -688,85 +688,85 @@ void hw_perf_enable(void) local_irq_restore(flags); } -static int collect_events(struct perf_counter *group, int max_count, - struct perf_counter *ctrs[], u64 *events, +static int collect_events(struct perf_event *group, int max_count, + struct perf_event *ctrs[], u64 *events, unsigned int *flags) { int n = 0; - struct perf_counter *counter; + struct perf_event *event; - if (!is_software_counter(group)) { + if (!is_software_event(group)) { if (n >= max_count) return -1; ctrs[n] = group; - flags[n] = group->hw.counter_base; + flags[n] = group->hw.event_base; events[n++] = group->hw.config; } - list_for_each_entry(counter, &group->sibling_list, list_entry) { - if (!is_software_counter(counter) && - counter->state != PERF_COUNTER_STATE_OFF) { + list_for_each_entry(event, &group->sibling_list, list_entry) { + if (!is_software_event(event) && + event->state != PERF_EVENT_STATE_OFF) { if (n >= max_count) return -1; - ctrs[n] = counter; - flags[n] = counter->hw.counter_base; - events[n++] = counter->hw.config; + ctrs[n] = event; + flags[n] = event->hw.event_base; + events[n++] = event->hw.config; } } return n; } -static void counter_sched_in(struct perf_counter *counter, int cpu) +static void event_sched_in(struct perf_event *event, int cpu) { - counter->state = PERF_COUNTER_STATE_ACTIVE; - counter->oncpu = cpu; - counter->tstamp_running += counter->ctx->time - counter->tstamp_stopped; - if (is_software_counter(counter)) - counter->pmu->enable(counter); + event->state = PERF_EVENT_STATE_ACTIVE; + event->oncpu = cpu; + event->tstamp_running += event->ctx->time - event->tstamp_stopped; + if (is_software_event(event)) + event->pmu->enable(event); } /* - * Called to enable a whole group of counters. + * Called to enable a whole group of events. * Returns 1 if the group was enabled, or -EAGAIN if it could not be. * Assumes the caller has disabled interrupts and has * frozen the PMU with hw_perf_save_disable. */ -int hw_perf_group_sched_in(struct perf_counter *group_leader, +int hw_perf_group_sched_in(struct perf_event *group_leader, struct perf_cpu_context *cpuctx, - struct perf_counter_context *ctx, int cpu) + struct perf_event_context *ctx, int cpu) { - struct cpu_hw_counters *cpuhw; + struct cpu_hw_events *cpuhw; long i, n, n0; - struct perf_counter *sub; + struct perf_event *sub; if (!ppmu) return 0; - cpuhw = &__get_cpu_var(cpu_hw_counters); - n0 = cpuhw->n_counters; - n = collect_events(group_leader, ppmu->n_counter - n0, - &cpuhw->counter[n0], &cpuhw->events[n0], + cpuhw = &__get_cpu_var(cpu_hw_events); + n0 = cpuhw->n_events; + n = collect_events(group_leader, ppmu->n_event - n0, + &cpuhw->event[n0], &cpuhw->events[n0], &cpuhw->flags[n0]); if (n < 0) return -EAGAIN; - if (check_excludes(cpuhw->counter, cpuhw->flags, n0, n)) + if (check_excludes(cpuhw->event, cpuhw->flags, n0, n)) return -EAGAIN; i = power_check_constraints(cpuhw, cpuhw->events, cpuhw->flags, n + n0); if (i < 0) return -EAGAIN; - cpuhw->n_counters = n0 + n; + cpuhw->n_events = n0 + n; cpuhw->n_added += n; /* - * OK, this group can go on; update counter states etc., - * and enable any software counters + * OK, this group can go on; update event states etc., + * and enable any software events */ for (i = n0; i < n0 + n; ++i) - cpuhw->counter[i]->hw.config = cpuhw->events[i]; + cpuhw->event[i]->hw.config = cpuhw->events[i]; cpuctx->active_oncpu += n; n = 1; - counter_sched_in(group_leader, cpu); + event_sched_in(group_leader, cpu); list_for_each_entry(sub, &group_leader->sibling_list, list_entry) { - if (sub->state != PERF_COUNTER_STATE_OFF) { - counter_sched_in(sub, cpu); + if (sub->state != PERF_EVENT_STATE_OFF) { + event_sched_in(sub, cpu); ++n; } } @@ -776,14 +776,14 @@ int hw_perf_group_sched_in(struct perf_counter *group_leader, } /* - * Add a counter to the PMU. - * If all counters are not already frozen, then we disable and + * Add a event to the PMU. + * If all events are not already frozen, then we disable and * re-enable the PMU in order to get hw_perf_enable to do the * actual work of reconfiguring the PMU. */ -static int power_pmu_enable(struct perf_counter *counter) +static int power_pmu_enable(struct perf_event *event) { - struct cpu_hw_counters *cpuhw; + struct cpu_hw_events *cpuhw; unsigned long flags; int n0; int ret = -EAGAIN; @@ -792,23 +792,23 @@ static int power_pmu_enable(struct perf_counter *counter) perf_disable(); /* - * Add the counter to the list (if there is room) + * Add the event to the list (if there is room) * and check whether the total set is still feasible. */ - cpuhw = &__get_cpu_var(cpu_hw_counters); - n0 = cpuhw->n_counters; - if (n0 >= ppmu->n_counter) + cpuhw = &__get_cpu_var(cpu_hw_events); + n0 = cpuhw->n_events; + if (n0 >= ppmu->n_event) goto out; - cpuhw->counter[n0] = counter; - cpuhw->events[n0] = counter->hw.config; - cpuhw->flags[n0] = counter->hw.counter_base; - if (check_excludes(cpuhw->counter, cpuhw->flags, n0, 1)) + cpuhw->event[n0] = event; + cpuhw->events[n0] = event->hw.config; + cpuhw->flags[n0] = event->hw.event_base; + if (check_excludes(cpuhw->event, cpuhw->flags, n0, 1)) goto out; if (power_check_constraints(cpuhw, cpuhw->events, cpuhw->flags, n0 + 1)) goto out; - counter->hw.config = cpuhw->events[n0]; - ++cpuhw->n_counters; + event->hw.config = cpuhw->events[n0]; + ++cpuhw->n_events; ++cpuhw->n_added; ret = 0; @@ -819,46 +819,46 @@ static int power_pmu_enable(struct perf_counter *counter) } /* - * Remove a counter from the PMU. + * Remove a event from the PMU. */ -static void power_pmu_disable(struct perf_counter *counter) +static void power_pmu_disable(struct perf_event *event) { - struct cpu_hw_counters *cpuhw; + struct cpu_hw_events *cpuhw; long i; unsigned long flags; local_irq_save(flags); perf_disable(); - power_pmu_read(counter); - - cpuhw = &__get_cpu_var(cpu_hw_counters); - for (i = 0; i < cpuhw->n_counters; ++i) { - if (counter == cpuhw->counter[i]) { - while (++i < cpuhw->n_counters) - cpuhw->counter[i-1] = cpuhw->counter[i]; - --cpuhw->n_counters; - ppmu->disable_pmc(counter->hw.idx - 1, cpuhw->mmcr); - if (counter->hw.idx) { - write_pmc(counter->hw.idx, 0); - counter->hw.idx = 0; + power_pmu_read(event); + + cpuhw = &__get_cpu_var(cpu_hw_events); + for (i = 0; i < cpuhw->n_events; ++i) { + if (event == cpuhw->event[i]) { + while (++i < cpuhw->n_events) + cpuhw->event[i-1] = cpuhw->event[i]; + --cpuhw->n_events; + ppmu->disable_pmc(event->hw.idx - 1, cpuhw->mmcr); + if (event->hw.idx) { + write_pmc(event->hw.idx, 0); + event->hw.idx = 0; } - perf_counter_update_userpage(counter); + perf_event_update_userpage(event); break; } } for (i = 0; i < cpuhw->n_limited; ++i) - if (counter == cpuhw->limited_counter[i]) + if (event == cpuhw->limited_event[i]) break; if (i < cpuhw->n_limited) { while (++i < cpuhw->n_limited) { - cpuhw->limited_counter[i-1] = cpuhw->limited_counter[i]; + cpuhw->limited_event[i-1] = cpuhw->limited_event[i]; cpuhw->limited_hwidx[i-1] = cpuhw->limited_hwidx[i]; } --cpuhw->n_limited; } - if (cpuhw->n_counters == 0) { - /* disable exceptions if no counters are running */ + if (cpuhw->n_events == 0) { + /* disable exceptions if no events are running */ cpuhw->mmcr[0] &= ~(MMCR0_PMXE | MMCR0_FCECE); } @@ -867,28 +867,28 @@ static void power_pmu_disable(struct perf_counter *counter) } /* - * Re-enable interrupts on a counter after they were throttled + * Re-enable interrupts on a event after they were throttled * because they were coming too fast. */ -static void power_pmu_unthrottle(struct perf_counter *counter) +static void power_pmu_unthrottle(struct perf_event *event) { s64 val, left; unsigned long flags; - if (!counter->hw.idx || !counter->hw.sample_period) + if (!event->hw.idx || !event->hw.sample_period) return; local_irq_save(flags); perf_disable(); - power_pmu_read(counter); - left = counter->hw.sample_period; - counter->hw.last_period = left; + power_pmu_read(event); + left = event->hw.sample_period; + event->hw.last_period = left; val = 0; if (left < 0x80000000L) val = 0x80000000L - left; - write_pmc(counter->hw.idx, val); - atomic64_set(&counter->hw.prev_count, val); - atomic64_set(&counter->hw.period_left, left); - perf_counter_update_userpage(counter); + write_pmc(event->hw.idx, val); + atomic64_set(&event->hw.prev_count, val); + atomic64_set(&event->hw.period_left, left); + perf_event_update_userpage(event); perf_enable(); local_irq_restore(flags); } @@ -901,29 +901,29 @@ struct pmu power_pmu = { }; /* - * Return 1 if we might be able to put counter on a limited PMC, + * Return 1 if we might be able to put event on a limited PMC, * or 0 if not. - * A counter can only go on a limited PMC if it counts something + * A event can only go on a limited PMC if it counts something * that a limited PMC can count, doesn't require interrupts, and * doesn't exclude any processor mode. */ -static int can_go_on_limited_pmc(struct perf_counter *counter, u64 ev, +static int can_go_on_limited_pmc(struct perf_event *event, u64 ev, unsigned int flags) { int n; u64 alt[MAX_EVENT_ALTERNATIVES]; - if (counter->attr.exclude_user - || counter->attr.exclude_kernel - || counter->attr.exclude_hv - || counter->attr.sample_period) + if (event->attr.exclude_user + || event->attr.exclude_kernel + || event->attr.exclude_hv + || event->attr.sample_period) return 0; if (ppmu->limited_pmc_event(ev)) return 1; /* - * The requested event isn't on a limited PMC already; + * The requested event_id isn't on a limited PMC already; * see if any alternative code goes on a limited PMC. */ if (!ppmu->get_alternatives) @@ -936,9 +936,9 @@ static int can_go_on_limited_pmc(struct perf_counter *counter, u64 ev, } /* - * Find an alternative event that goes on a normal PMC, if possible, - * and return the event code, or 0 if there is no such alternative. - * (Note: event code 0 is "don't count" on all machines.) + * Find an alternative event_id that goes on a normal PMC, if possible, + * and return the event_id code, or 0 if there is no such alternative. + * (Note: event_id code 0 is "don't count" on all machines.) */ static u64 normal_pmc_alternative(u64 ev, unsigned long flags) { @@ -952,26 +952,26 @@ static u64 normal_pmc_alternative(u64 ev, unsigned long flags) return alt[0]; } -/* Number of perf_counters counting hardware events */ -static atomic_t num_counters; +/* Number of perf_events counting hardware events */ +static atomic_t num_events; /* Used to avoid races in calling reserve/release_pmc_hardware */ static DEFINE_MUTEX(pmc_reserve_mutex); /* - * Release the PMU if this is the last perf_counter. + * Release the PMU if this is the last perf_event. */ -static void hw_perf_counter_destroy(struct perf_counter *counter) +static void hw_perf_event_destroy(struct perf_event *event) { - if (!atomic_add_unless(&num_counters, -1, 1)) { + if (!atomic_add_unless(&num_events, -1, 1)) { mutex_lock(&pmc_reserve_mutex); - if (atomic_dec_return(&num_counters) == 0) + if (atomic_dec_return(&num_events) == 0) release_pmc_hardware(); mutex_unlock(&pmc_reserve_mutex); } } /* - * Translate a generic cache event config to a raw event code. + * Translate a generic cache event_id config to a raw event_id code. */ static int hw_perf_cache_event(u64 config, u64 *eventp) { @@ -1000,39 +1000,39 @@ static int hw_perf_cache_event(u64 config, u64 *eventp) return 0; } -const struct pmu *hw_perf_counter_init(struct perf_counter *counter) +const struct pmu *hw_perf_event_init(struct perf_event *event) { u64 ev; unsigned long flags; - struct perf_counter *ctrs[MAX_HWCOUNTERS]; - u64 events[MAX_HWCOUNTERS]; - unsigned int cflags[MAX_HWCOUNTERS]; + struct perf_event *ctrs[MAX_HWEVENTS]; + u64 events[MAX_HWEVENTS]; + unsigned int cflags[MAX_HWEVENTS]; int n; int err; - struct cpu_hw_counters *cpuhw; + struct cpu_hw_events *cpuhw; if (!ppmu) return ERR_PTR(-ENXIO); - switch (counter->attr.type) { + switch (event->attr.type) { case PERF_TYPE_HARDWARE: - ev = counter->attr.config; + ev = event->attr.config; if (ev >= ppmu->n_generic || ppmu->generic_events[ev] == 0) return ERR_PTR(-EOPNOTSUPP); ev = ppmu->generic_events[ev]; break; case PERF_TYPE_HW_CACHE: - err = hw_perf_cache_event(counter->attr.config, &ev); + err = hw_perf_cache_event(event->attr.config, &ev); if (err) return ERR_PTR(err); break; case PERF_TYPE_RAW: - ev = counter->attr.config; + ev = event->attr.config; break; default: return ERR_PTR(-EINVAL); } - counter->hw.config_base = ev; - counter->hw.idx = 0; + event->hw.config_base = ev; + event->hw.idx = 0; /* * If we are not running on a hypervisor, force the @@ -1040,28 +1040,28 @@ const struct pmu *hw_perf_counter_init(struct perf_counter *counter) * the user set it to. */ if (!firmware_has_feature(FW_FEATURE_LPAR)) - counter->attr.exclude_hv = 0; + event->attr.exclude_hv = 0; /* - * If this is a per-task counter, then we can use + * If this is a per-task event, then we can use * PM_RUN_* events interchangeably with their non RUN_* * equivalents, e.g. PM_RUN_CYC instead of PM_CYC. * XXX we should check if the task is an idle task. */ flags = 0; - if (counter->ctx->task) + if (event->ctx->task) flags |= PPMU_ONLY_COUNT_RUN; /* - * If this machine has limited counters, check whether this - * event could go on a limited counter. + * If this machine has limited events, check whether this + * event_id could go on a limited event. */ if (ppmu->flags & PPMU_LIMITED_PMC5_6) { - if (can_go_on_limited_pmc(counter, ev, flags)) { + if (can_go_on_limited_pmc(event, ev, flags)) { flags |= PPMU_LIMITED_PMC_OK; } else if (ppmu->limited_pmc_event(ev)) { /* - * The requested event is on a limited PMC, + * The requested event_id is on a limited PMC, * but we can't use a limited PMC; see if any * alternative goes on a normal PMC. */ @@ -1073,50 +1073,50 @@ const struct pmu *hw_perf_counter_init(struct perf_counter *counter) /* * If this is in a group, check if it can go on with all the - * other hardware counters in the group. We assume the counter + * other hardware events in the group. We assume the event * hasn't been linked into its leader's sibling list at this point. */ n = 0; - if (counter->group_leader != counter) { - n = collect_events(counter->group_leader, ppmu->n_counter - 1, + if (event->group_leader != event) { + n = collect_events(event->group_leader, ppmu->n_event - 1, ctrs, events, cflags); if (n < 0) return ERR_PTR(-EINVAL); } events[n] = ev; - ctrs[n] = counter; + ctrs[n] = event; cflags[n] = flags; if (check_excludes(ctrs, cflags, n, 1)) return ERR_PTR(-EINVAL); - cpuhw = &get_cpu_var(cpu_hw_counters); + cpuhw = &get_cpu_var(cpu_hw_events); err = power_check_constraints(cpuhw, events, cflags, n + 1); - put_cpu_var(cpu_hw_counters); + put_cpu_var(cpu_hw_events); if (err) return ERR_PTR(-EINVAL); - counter->hw.config = events[n]; - counter->hw.counter_base = cflags[n]; - counter->hw.last_period = counter->hw.sample_period; - atomic64_set(&counter->hw.period_left, counter->hw.last_period); + event->hw.config = events[n]; + event->hw.event_base = cflags[n]; + event->hw.last_period = event->hw.sample_period; + atomic64_set(&event->hw.period_left, event->hw.last_period); /* * See if we need to reserve the PMU. - * If no counters are currently in use, then we have to take a + * If no events are currently in use, then we have to take a * mutex to ensure that we don't race with another task doing * reserve_pmc_hardware or release_pmc_hardware. */ err = 0; - if (!atomic_inc_not_zero(&num_counters)) { + if (!atomic_inc_not_zero(&num_events)) { mutex_lock(&pmc_reserve_mutex); - if (atomic_read(&num_counters) == 0 && - reserve_pmc_hardware(perf_counter_interrupt)) + if (atomic_read(&num_events) == 0 && + reserve_pmc_hardware(perf_event_interrupt)) err = -EBUSY; else - atomic_inc(&num_counters); + atomic_inc(&num_events); mutex_unlock(&pmc_reserve_mutex); } - counter->destroy = hw_perf_counter_destroy; + event->destroy = hw_perf_event_destroy; if (err) return ERR_PTR(err); @@ -1128,24 +1128,24 @@ const struct pmu *hw_perf_counter_init(struct perf_counter *counter) * things if requested. Note that interrupts are hard-disabled * here so there is no possibility of being interrupted. */ -static void record_and_restart(struct perf_counter *counter, unsigned long val, +static void record_and_restart(struct perf_event *event, unsigned long val, struct pt_regs *regs, int nmi) { - u64 period = counter->hw.sample_period; + u64 period = event->hw.sample_period; s64 prev, delta, left; int record = 0; /* we don't have to worry about interrupts here */ - prev = atomic64_read(&counter->hw.prev_count); + prev = atomic64_read(&event->hw.prev_count); delta = (val - prev) & 0xfffffffful; - atomic64_add(delta, &counter->count); + atomic64_add(delta, &event->count); /* - * See if the total period for this counter has expired, + * See if the total period for this event has expired, * and update for the next period. */ val = 0; - left = atomic64_read(&counter->hw.period_left) - delta; + left = atomic64_read(&event->hw.period_left) - delta; if (period) { if (left <= 0) { left += period; @@ -1163,18 +1163,18 @@ static void record_and_restart(struct perf_counter *counter, unsigned long val, if (record) { struct perf_sample_data data = { .addr = 0, - .period = counter->hw.last_period, + .period = event->hw.last_period, }; - if (counter->attr.sample_type & PERF_SAMPLE_ADDR) + if (event->attr.sample_type & PERF_SAMPLE_ADDR) perf_get_data_addr(regs, &data.addr); - if (perf_counter_overflow(counter, nmi, &data, regs)) { + if (perf_event_overflow(event, nmi, &data, regs)) { /* * Interrupts are coming too fast - throttle them - * by setting the counter to 0, so it will be + * by setting the event to 0, so it will be * at least 2^30 cycles until the next interrupt - * (assuming each counter counts at most 2 counts + * (assuming each event counts at most 2 counts * per cycle). */ val = 0; @@ -1182,15 +1182,15 @@ static void record_and_restart(struct perf_counter *counter, unsigned long val, } } - write_pmc(counter->hw.idx, val); - atomic64_set(&counter->hw.prev_count, val); - atomic64_set(&counter->hw.period_left, left); - perf_counter_update_userpage(counter); + write_pmc(event->hw.idx, val); + atomic64_set(&event->hw.prev_count, val); + atomic64_set(&event->hw.period_left, left); + perf_event_update_userpage(event); } /* * Called from generic code to get the misc flags (i.e. processor mode) - * for an event. + * for an event_id. */ unsigned long perf_misc_flags(struct pt_regs *regs) { @@ -1198,13 +1198,13 @@ unsigned long perf_misc_flags(struct pt_regs *regs) if (flags) return flags; - return user_mode(regs) ? PERF_EVENT_MISC_USER : - PERF_EVENT_MISC_KERNEL; + return user_mode(regs) ? PERF_RECORD_MISC_USER : + PERF_RECORD_MISC_KERNEL; } /* * Called from generic code to get the instruction pointer - * for an event. + * for an event_id. */ unsigned long perf_instruction_pointer(struct pt_regs *regs) { @@ -1220,17 +1220,17 @@ unsigned long perf_instruction_pointer(struct pt_regs *regs) /* * Performance monitor interrupt stuff */ -static void perf_counter_interrupt(struct pt_regs *regs) +static void perf_event_interrupt(struct pt_regs *regs) { int i; - struct cpu_hw_counters *cpuhw = &__get_cpu_var(cpu_hw_counters); - struct perf_counter *counter; + struct cpu_hw_events *cpuhw = &__get_cpu_var(cpu_hw_events); + struct perf_event *event; unsigned long val; int found = 0; int nmi; if (cpuhw->n_limited) - freeze_limited_counters(cpuhw, mfspr(SPRN_PMC5), + freeze_limited_events(cpuhw, mfspr(SPRN_PMC5), mfspr(SPRN_PMC6)); perf_read_regs(regs); @@ -1241,26 +1241,26 @@ static void perf_counter_interrupt(struct pt_regs *regs) else irq_enter(); - for (i = 0; i < cpuhw->n_counters; ++i) { - counter = cpuhw->counter[i]; - if (!counter->hw.idx || is_limited_pmc(counter->hw.idx)) + for (i = 0; i < cpuhw->n_events; ++i) { + event = cpuhw->event[i]; + if (!event->hw.idx || is_limited_pmc(event->hw.idx)) continue; - val = read_pmc(counter->hw.idx); + val = read_pmc(event->hw.idx); if ((int)val < 0) { - /* counter has overflowed */ + /* event has overflowed */ found = 1; - record_and_restart(counter, val, regs, nmi); + record_and_restart(event, val, regs, nmi); } } /* - * In case we didn't find and reset the counter that caused - * the interrupt, scan all counters and reset any that are + * In case we didn't find and reset the event that caused + * the interrupt, scan all events and reset any that are * negative, to avoid getting continual interrupts. * Any that we processed in the previous loop will not be negative. */ if (!found) { - for (i = 0; i < ppmu->n_counter; ++i) { + for (i = 0; i < ppmu->n_event; ++i) { if (is_limited_pmc(i + 1)) continue; val = read_pmc(i + 1); @@ -1273,7 +1273,7 @@ static void perf_counter_interrupt(struct pt_regs *regs) * Reset MMCR0 to its normal value. This will set PMXE and * clear FC (freeze counters) and PMAO (perf mon alert occurred) * and thus allow interrupts to occur again. - * XXX might want to use MSR.PM to keep the counters frozen until + * XXX might want to use MSR.PM to keep the events frozen until * we get back out of this interrupt. */ write_mmcr0(cpuhw, cpuhw->mmcr[0]); @@ -1284,9 +1284,9 @@ static void perf_counter_interrupt(struct pt_regs *regs) irq_exit(); } -void hw_perf_counter_setup(int cpu) +void hw_perf_event_setup(int cpu) { - struct cpu_hw_counters *cpuhw = &per_cpu(cpu_hw_counters, cpu); + struct cpu_hw_events *cpuhw = &per_cpu(cpu_hw_events, cpu); if (!ppmu) return; @@ -1308,7 +1308,7 @@ int register_power_pmu(struct power_pmu *pmu) * Use FCHV to ignore kernel events if MSR.HV is set. */ if (mfmsr() & MSR_HV) - freeze_counters_kernel = MMCR0_FCHV; + freeze_events_kernel = MMCR0_FCHV; #endif /* CONFIG_PPC64 */ return 0; diff --git a/arch/powerpc/kernel/power4-pmu.c b/arch/powerpc/kernel/power4-pmu.c index 3c90a3d..2a361cd 100644 --- a/arch/powerpc/kernel/power4-pmu.c +++ b/arch/powerpc/kernel/power4-pmu.c @@ -9,7 +9,7 @@ * 2 of the License, or (at your option) any later version. */ #include <linux/kernel.h> -#include <linux/perf_counter.h> +#include <linux/perf_event.h> #include <linux/string.h> #include <asm/reg.h> #include <asm/cputable.h> diff --git a/arch/powerpc/kernel/power5+-pmu.c b/arch/powerpc/kernel/power5+-pmu.c index 31918af..0f4c1c7 100644 --- a/arch/powerpc/kernel/power5+-pmu.c +++ b/arch/powerpc/kernel/power5+-pmu.c @@ -9,7 +9,7 @@ * 2 of the License, or (at your option) any later version. */ #include <linux/kernel.h> -#include <linux/perf_counter.h> +#include <linux/perf_event.h> #include <linux/string.h> #include <asm/reg.h> #include <asm/cputable.h> diff --git a/arch/powerpc/kernel/power5-pmu.c b/arch/powerpc/kernel/power5-pmu.c index 867f6f6..c351b3a 100644 --- a/arch/powerpc/kernel/power5-pmu.c +++ b/arch/powerpc/kernel/power5-pmu.c @@ -9,7 +9,7 @@ * 2 of the License, or (at your option) any later version. */ #include <linux/kernel.h> -#include <linux/perf_counter.h> +#include <linux/perf_event.h> #include <linux/string.h> #include <asm/reg.h> #include <asm/cputable.h> diff --git a/arch/powerpc/kernel/power6-pmu.c b/arch/powerpc/kernel/power6-pmu.c index fa21890..ca399ba 100644 --- a/arch/powerpc/kernel/power6-pmu.c +++ b/arch/powerpc/kernel/power6-pmu.c @@ -9,7 +9,7 @@ * 2 of the License, or (at your option) any later version. */ #include <linux/kernel.h> -#include <linux/perf_counter.h> +#include <linux/perf_event.h> #include <linux/string.h> #include <asm/reg.h> #include <asm/cputable.h> diff --git a/arch/powerpc/kernel/power7-pmu.c b/arch/powerpc/kernel/power7-pmu.c index 018d094..28a4daa 100644 --- a/arch/powerpc/kernel/power7-pmu.c +++ b/arch/powerpc/kernel/power7-pmu.c @@ -9,7 +9,7 @@ * 2 of the License, or (at your option) any later version. */ #include <linux/kernel.h> -#include <linux/perf_counter.h> +#include <linux/perf_event.h> #include <linux/string.h> #include <asm/reg.h> #include <asm/cputable.h> diff --git a/arch/powerpc/kernel/ppc970-pmu.c b/arch/powerpc/kernel/ppc970-pmu.c index 75dccb7..4795744 100644 --- a/arch/powerpc/kernel/ppc970-pmu.c +++ b/arch/powerpc/kernel/ppc970-pmu.c @@ -9,7 +9,7 @@ * 2 of the License, or (at your option) any later version. */ #include <linux/string.h> -#include <linux/perf_counter.h> +#include <linux/perf_event.h> #include <asm/reg.h> #include <asm/cputable.h> diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index 465e498..df45a74 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -53,7 +53,7 @@ #include <linux/posix-timers.h> #include <linux/irq.h> #include <linux/delay.h> -#include <linux/perf_counter.h> +#include <linux/perf_event.h> #include <asm/io.h> #include <asm/processor.h> @@ -527,25 +527,25 @@ void __init iSeries_time_init_early(void) } #endif /* CONFIG_PPC_ISERIES */ -#if defined(CONFIG_PERF_COUNTERS) && defined(CONFIG_PPC32) -DEFINE_PER_CPU(u8, perf_counter_pending); +#if defined(CONFIG_PERF_EVENTS) && defined(CONFIG_PPC32) +DEFINE_PER_CPU(u8, perf_event_pending); -void set_perf_counter_pending(void) +void set_perf_event_pending(void) { - get_cpu_var(perf_counter_pending) = 1; + get_cpu_var(perf_event_pending) = 1; set_dec(1); - put_cpu_var(perf_counter_pending); + put_cpu_var(perf_event_pending); } -#define test_perf_counter_pending() __get_cpu_var(perf_counter_pending) -#define clear_perf_counter_pending() __get_cpu_var(perf_counter_pending) = 0 +#define test_perf_event_pending() __get_cpu_var(perf_event_pending) +#define clear_perf_event_pending() __get_cpu_var(perf_event_pending) = 0 -#else /* CONFIG_PERF_COUNTERS && CONFIG_PPC32 */ +#else /* CONFIG_PERF_EVENTS && CONFIG_PPC32 */ -#define test_perf_counter_pending() 0 -#define clear_perf_counter_pending() +#define test_perf_event_pending() 0 +#define clear_perf_event_pending() -#endif /* CONFIG_PERF_COUNTERS && CONFIG_PPC32 */ +#endif /* CONFIG_PERF_EVENTS && CONFIG_PPC32 */ /* * For iSeries shared processors, we have to let the hypervisor @@ -573,9 +573,9 @@ void timer_interrupt(struct pt_regs * regs) set_dec(DECREMENTER_MAX); #ifdef CONFIG_PPC32 - if (test_perf_counter_pending()) { - clear_perf_counter_pending(); - perf_counter_do_pending(); + if (test_perf_event_pending()) { + clear_perf_event_pending(); + perf_event_do_pending(); } if (atomic_read(&ppc_n_lost_interrupts) != 0) do_IRQ(regs); diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c index 830bef0..e7dae82 100644 --- a/arch/powerpc/mm/fault.c +++ b/arch/powerpc/mm/fault.c @@ -29,7 +29,7 @@ #include <linux/module.h> #include <linux/kprobes.h> #include <linux/kdebug.h> -#include <linux/perf_counter.h> +#include <linux/perf_event.h> #include <asm/firmware.h> #include <asm/page.h> @@ -171,7 +171,7 @@ int __kprobes do_page_fault(struct pt_regs *regs, unsigned long address, die("Weird page fault", regs, SIGSEGV); } - perf_swcounter_event(PERF_COUNT_SW_PAGE_FAULTS, 1, 0, regs, address); + perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, 0, regs, address); /* When running in the kernel we expect faults to occur only to * addresses in user space. All other faults represent errors in the @@ -312,7 +312,7 @@ good_area: } if (ret & VM_FAULT_MAJOR) { current->maj_flt++; - perf_swcounter_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, 0, + perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, 0, regs, address); #ifdef CONFIG_PPC_SMLPAR if (firmware_has_feature(FW_FEATURE_CMO)) { @@ -323,7 +323,7 @@ good_area: #endif } else { current->min_flt++; - perf_swcounter_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, 0, + perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, 0, regs, address); } up_read(&mm->mmap_sem); diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype index 9efc8bd..e382cae 100644 --- a/arch/powerpc/platforms/Kconfig.cputype +++ b/arch/powerpc/platforms/Kconfig.cputype @@ -280,9 +280,9 @@ config PPC_HAVE_PMU_SUPPORT config PPC_PERF_CTRS def_bool y - depends on PERF_COUNTERS && PPC_HAVE_PMU_SUPPORT + depends on PERF_EVENTS && PPC_HAVE_PMU_SUPPORT help - This enables the powerpc-specific perf_counter back-end. + This enables the powerpc-specific perf_event back-end. config SMP depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 1c866ef..43c0aca 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -94,7 +94,7 @@ config S390 select HAVE_KVM if 64BIT select HAVE_ARCH_TRACEHOOK select INIT_ALL_POSSIBLE - select HAVE_PERF_COUNTERS + select HAVE_PERF_EVENTS config SCHED_OMIT_FRAME_POINTER bool diff --git a/arch/s390/include/asm/perf_counter.h b/arch/s390/include/asm/perf_counter.h deleted file mode 100644 index 7015188..0000000 --- a/arch/s390/include/asm/perf_counter.h +++ /dev/null @@ -1,10 +0,0 @@ -/* - * Performance counter support - s390 specific definitions. - * - * Copyright 2009 Martin Schwidefsky, IBM Corporation. - */ - -static inline void set_perf_counter_pending(void) {} -static inline void clear_perf_counter_pending(void) {} - -#define PERF_COUNTER_INDEX_OFFSET 0 diff --git a/arch/s390/include/asm/perf_event.h b/arch/s390/include/asm/perf_event.h new file mode 100644 index 0000000..3840cbe --- /dev/null +++ b/arch/s390/include/asm/perf_event.h @@ -0,0 +1,10 @@ +/* + * Performance event support - s390 specific definitions. + * + * Copyright 2009 Martin Schwidefsky, IBM Corporation. + */ + +static inline void set_perf_event_pending(void) {} +static inline void clear_perf_event_pending(void) {} + +#define PERF_EVENT_INDEX_OFFSET 0 diff --git a/arch/s390/include/asm/unistd.h b/arch/s390/include/asm/unistd.h index c80602d..cb5232d 100644 --- a/arch/s390/include/asm/unistd.h +++ b/arch/s390/include/asm/unistd.h @@ -268,7 +268,7 @@ #define __NR_preadv 328 #define __NR_pwritev 329 #define __NR_rt_tgsigqueueinfo 330 -#define __NR_perf_counter_open 331 +#define __NR_perf_event_open 331 #define NR_syscalls 332 /* diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S index 88a83366..6247900 100644 --- a/arch/s390/kernel/compat_wrapper.S +++ b/arch/s390/kernel/compat_wrapper.S @@ -1832,11 +1832,11 @@ compat_sys_rt_tgsigqueueinfo_wrapper: llgtr %r5,%r5 # struct compat_siginfo * jg compat_sys_rt_tgsigqueueinfo_wrapper # branch to system call - .globl sys_perf_counter_open_wrapper -sys_perf_counter_open_wrapper: - llgtr %r2,%r2 # const struct perf_counter_attr * + .globl sys_perf_event_open_wrapper +sys_perf_event_open_wrapper: + llgtr %r2,%r2 # const struct perf_event_attr * lgfr %r3,%r3 # pid_t lgfr %r4,%r4 # int lgfr %r5,%r5 # int llgfr %r6,%r6 # unsigned long - jg sys_perf_counter_open # branch to system call + jg sys_perf_event_open # branch to system call diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S index ad1acd2..0b50836 100644 --- a/arch/s390/kernel/syscalls.S +++ b/arch/s390/kernel/syscalls.S @@ -339,4 +339,4 @@ SYSCALL(sys_epoll_create1,sys_epoll_create1,sys_epoll_create1_wrapper) SYSCALL(sys_preadv,sys_preadv,compat_sys_preadv_wrapper) SYSCALL(sys_pwritev,sys_pwritev,compat_sys_pwritev_wrapper) SYSCALL(sys_rt_tgsigqueueinfo,sys_rt_tgsigqueueinfo,compat_sys_rt_tgsigqueueinfo_wrapper) /* 330 */ -SYSCALL(sys_perf_counter_open,sys_perf_counter_open,sys_perf_counter_open_wrapper) +SYSCALL(sys_perf_event_open,sys_perf_event_open,sys_perf_event_open_wrapper) diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c index 1abbadd..6d50746 100644 --- a/arch/s390/mm/fault.c +++ b/arch/s390/mm/fault.c @@ -10,7 +10,7 @@ * Copyright (C) 1995 Linus Torvalds */ -#include <linux/perf_counter.h> +#include <linux/perf_event.h> #include <linux/signal.h> #include <linux/sched.h> #include <linux/kernel.h> @@ -306,7 +306,7 @@ do_exception(struct pt_regs *regs, unsigned long error_code, int write) * interrupts again and then search the VMAs */ local_irq_enable(); - perf_swcounter_event(PERF_COUNT_SW_PAGE_FAULTS, 1, 0, regs, address); + perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, 0, regs, address); down_read(&mm->mmap_sem); si_code = SEGV_MAPERR; @@ -366,11 +366,11 @@ good_area: } if (fault & VM_FAULT_MAJOR) { tsk->maj_flt++; - perf_swcounter_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, 0, + perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, 0, regs, address); } else { tsk->min_flt++; - perf_swcounter_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, 0, + perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, 0, regs, address); } up_read(&mm->mmap_sem); diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index 4df3570..b940424 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -16,7 +16,7 @@ config SUPERH select HAVE_IOREMAP_PROT if MMU select HAVE_ARCH_TRACEHOOK select HAVE_DMA_API_DEBUG - select HAVE_PERF_COUNTERS + select HAVE_PERF_EVENTS select HAVE_KERNEL_GZIP select HAVE_KERNEL_BZIP2 select HAVE_KERNEL_LZMA diff --git a/arch/sh/include/asm/perf_counter.h b/arch/sh/include/asm/perf_counter.h deleted file mode 100644 index d8e6bb9..0000000 --- a/arch/sh/include/asm/perf_counter.h +++ /dev/null @@ -1,9 +0,0 @@ -#ifndef __ASM_SH_PERF_COUNTER_H -#define __ASM_SH_PERF_COUNTER_H - -/* SH only supports software counters through this interface. */ -static inline void set_perf_counter_pending(void) {} - -#define PERF_COUNTER_INDEX_OFFSET 0 - -#endif /* __ASM_SH_PERF_COUNTER_H */ diff --git a/arch/sh/include/asm/perf_event.h b/arch/sh/include/asm/perf_event.h new file mode 100644 index 0000000..11a3022 --- /dev/null +++ b/arch/sh/include/asm/perf_event.h @@ -0,0 +1,9 @@ +#ifndef __ASM_SH_PERF_EVENT_H +#define __ASM_SH_PERF_EVENT_H + +/* SH only supports software events through this interface. */ +static inline void set_perf_event_pending(void) {} + +#define PERF_EVENT_INDEX_OFFSET 0 + +#endif /* __ASM_SH_PERF_EVENT_H */ diff --git a/arch/sh/include/asm/unistd_32.h b/arch/sh/include/asm/unistd_32.h index 925dd40..f3fd1b9 100644 --- a/arch/sh/include/asm/unistd_32.h +++ b/arch/sh/include/asm/unistd_32.h @@ -344,7 +344,7 @@ #define __NR_preadv 333 #define __NR_pwritev 334 #define __NR_rt_tgsigqueueinfo 335 -#define __NR_perf_counter_open 336 +#define __NR_perf_event_open 336 #define NR_syscalls 337 diff --git a/arch/sh/include/asm/unistd_64.h b/arch/sh/include/asm/unistd_64.h index 2b84bc9..343ce8f 100644 --- a/arch/sh/include/asm/unistd_64.h +++ b/arch/sh/include/asm/unistd_64.h @@ -384,7 +384,7 @@ #define __NR_preadv 361 #define __NR_pwritev 362 #define __NR_rt_tgsigqueueinfo 363 -#define __NR_perf_counter_open 364 +#define __NR_perf_event_open 364 #ifdef __KERNEL__ diff --git a/arch/sh/kernel/syscalls_32.S b/arch/sh/kernel/syscalls_32.S index 16ba225..19fd11d 100644 --- a/arch/sh/kernel/syscalls_32.S +++ b/arch/sh/kernel/syscalls_32.S @@ -352,4 +352,4 @@ ENTRY(sys_call_table) .long sys_preadv .long sys_pwritev .long sys_rt_tgsigqueueinfo /* 335 */ - .long sys_perf_counter_open + .long sys_perf_event_open diff --git a/arch/sh/kernel/syscalls_64.S b/arch/sh/kernel/syscalls_64.S index af6fb74..5bfde6c 100644 --- a/arch/sh/kernel/syscalls_64.S +++ b/arch/sh/kernel/syscalls_64.S @@ -390,4 +390,4 @@ sys_call_table: .long sys_preadv .long sys_pwritev .long sys_rt_tgsigqueueinfo - .long sys_perf_counter_open + .long sys_perf_event_open diff --git a/arch/sh/mm/fault_32.c b/arch/sh/mm/fault_32.c index 781b413..4753010 100644 --- a/arch/sh/mm/fault_32.c +++ b/arch/sh/mm/fault_32.c @@ -15,7 +15,7 @@ #include <linux/mm.h> #include <linux/hardirq.h> #include <linux/kprobes.h> -#include <linux/perf_counter.h> +#include <linux/perf_event.h> #include <asm/io_trapped.h> #include <asm/system.h> #include <asm/mmu_context.h> @@ -157,7 +157,7 @@ asmlinkage void __kprobes do_page_fault(struct pt_regs *regs, if ((regs->sr & SR_IMASK) != SR_IMASK) local_irq_enable(); - perf_swcounter_event(PERF_COUNT_SW_PAGE_FAULTS, 1, 0, regs, address); + perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, 0, regs, address); /* * If we're in an interrupt, have no user context or are running @@ -208,11 +208,11 @@ survive: } if (fault & VM_FAULT_MAJOR) { tsk->maj_flt++; - perf_swcounter_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, 0, + perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, 0, regs, address); } else { tsk->min_flt++; - perf_swcounter_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, 0, + perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, 0, regs, address); } diff --git a/arch/sh/mm/tlbflush_64.c b/arch/sh/mm/tlbflush_64.c index 2dcc485..de0b0e88 100644 --- a/arch/sh/mm/tlbflush_64.c +++ b/arch/sh/mm/tlbflush_64.c @@ -20,7 +20,7 @@ #include <linux/mman.h> #include <linux/mm.h> #include <linux/smp.h> -#include <linux/perf_counter.h> +#include <linux/perf_event.h> #include <linux/interrupt.h> #include <asm/system.h> #include <asm/io.h> @@ -116,7 +116,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long writeaccess, /* Not an IO address, so reenable interrupts */ local_irq_enable(); - perf_swcounter_event(PERF_COUNT_SW_PAGE_FAULTS, 1, 0, regs, address); + perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, 0, regs, address); /* * If we're in an interrupt or have no user @@ -201,11 +201,11 @@ survive: if (fault & VM_FAULT_MAJOR) { tsk->maj_flt++; - perf_swcounter_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, 0, + perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, 0, regs, address); } else { tsk->min_flt++; - perf_swcounter_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, 0, + perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, 0, regs, address); } diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index 86b8234..97fca46 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -25,7 +25,7 @@ config SPARC select ARCH_WANT_OPTIONAL_GPIOLIB select RTC_CLASS select RTC_DRV_M48T59 - select HAVE_PERF_COUNTERS + select HAVE_PERF_EVENTS select HAVE_DMA_ATTRS select HAVE_DMA_API_DEBUG @@ -47,7 +47,7 @@ config SPARC64 select RTC_DRV_BQ4802 select RTC_DRV_SUN4V select RTC_DRV_STARFIRE - select HAVE_PERF_COUNTERS + select HAVE_PERF_EVENTS config ARCH_DEFCONFIG string diff --git a/arch/sparc/include/asm/perf_counter.h b/arch/sparc/include/asm/perf_counter.h deleted file mode 100644 index 5d7a8ca..0000000 --- a/arch/sparc/include/asm/perf_counter.h +++ /dev/null @@ -1,14 +0,0 @@ -#ifndef __ASM_SPARC_PERF_COUNTER_H -#define __ASM_SPARC_PERF_COUNTER_H - -extern void set_perf_counter_pending(void); - -#define PERF_COUNTER_INDEX_OFFSET 0 - -#ifdef CONFIG_PERF_COUNTERS -extern void init_hw_perf_counters(void); -#else -static inline void init_hw_perf_counters(void) { } -#endif - -#endif diff --git a/arch/sparc/include/asm/perf_event.h b/arch/sparc/include/asm/perf_event.h new file mode 100644 index 0000000..7e26698 --- /dev/null +++ b/arch/sparc/include/asm/perf_event.h @@ -0,0 +1,14 @@ +#ifndef __ASM_SPARC_PERF_EVENT_H +#define __ASM_SPARC_PERF_EVENT_H + +extern void set_perf_event_pending(void); + +#define PERF_EVENT_INDEX_OFFSET 0 + +#ifdef CONFIG_PERF_EVENTS +extern void init_hw_perf_events(void); +#else +static inline void init_hw_perf_events(void) { } +#endif + +#endif diff --git a/arch/sparc/include/asm/unistd.h b/arch/sparc/include/asm/unistd.h index 706df66..42f2316 100644 --- a/arch/sparc/include/asm/unistd.h +++ b/arch/sparc/include/asm/unistd.h @@ -395,7 +395,7 @@ #define __NR_preadv 324 #define __NR_pwritev 325 #define __NR_rt_tgsigqueueinfo 326 -#define __NR_perf_counter_open 327 +#define __NR_perf_event_open 327 #define NR_SYSCALLS 328 diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile index 247cc620..3a048fa 100644 --- a/arch/sparc/kernel/Makefile +++ b/arch/sparc/kernel/Makefile @@ -104,5 +104,5 @@ obj-$(CONFIG_AUDIT) += audit.o audit--$(CONFIG_AUDIT) := compat_audit.o obj-$(CONFIG_COMPAT) += $(audit--y) -pc--$(CONFIG_PERF_COUNTERS) := perf_counter.o +pc--$(CONFIG_PERF_EVENTS) := perf_event.o obj-$(CONFIG_SPARC64) += $(pc--y) diff --git a/arch/sparc/kernel/nmi.c b/arch/sparc/kernel/nmi.c index 378eb53..b129611 100644 --- a/arch/sparc/kernel/nmi.c +++ b/arch/sparc/kernel/nmi.c @@ -19,7 +19,7 @@ #include <linux/delay.h> #include <linux/smp.h> -#include <asm/perf_counter.h> +#include <asm/perf_event.h> #include <asm/ptrace.h> #include <asm/local.h> #include <asm/pcr.h> @@ -265,7 +265,7 @@ int __init nmi_init(void) } } if (!err) - init_hw_perf_counters(); + init_hw_perf_events(); return err; } diff --git a/arch/sparc/kernel/pcr.c b/arch/sparc/kernel/pcr.c index 68ff001..2d94e7a 100644 --- a/arch/sparc/kernel/pcr.c +++ b/arch/sparc/kernel/pcr.c @@ -7,7 +7,7 @@ #include <linux/init.h> #include <linux/irq.h> -#include <linux/perf_counter.h> +#include <linux/perf_event.h> #include <asm/pil.h> #include <asm/pcr.h> @@ -15,7 +15,7 @@ /* This code is shared between various users of the performance * counters. Users will be oprofile, pseudo-NMI watchdog, and the - * perf_counter support layer. + * perf_event support layer. */ #define PCR_SUN4U_ENABLE (PCR_PIC_PRIV | PCR_STRACE | PCR_UTRACE) @@ -42,14 +42,14 @@ void deferred_pcr_work_irq(int irq, struct pt_regs *regs) old_regs = set_irq_regs(regs); irq_enter(); -#ifdef CONFIG_PERF_COUNTERS - perf_counter_do_pending(); +#ifdef CONFIG_PERF_EVENTS + perf_event_do_pending(); #endif irq_exit(); set_irq_regs(old_regs); } -void set_perf_counter_pending(void) +void set_perf_event_pending(void) { set_softint(1 << PIL_DEFERRED_PCR_WORK); } diff --git a/arch/sparc/kernel/perf_counter.c b/arch/sparc/kernel/perf_event.c index b1265ce..2d6a1b1 100644 --- a/arch/sparc/kernel/perf_counter.c +++ b/arch/sparc/kernel/perf_event.c @@ -1,8 +1,8 @@ -/* Performance counter support for sparc64. +/* Performance event support for sparc64. * * Copyright (C) 2009 David S. Miller <davem@davemloft.net> * - * This code is based almost entirely upon the x86 perf counter + * This code is based almost entirely upon the x86 perf event * code, which is: * * Copyright (C) 2008 Thomas Gleixner <tglx@linutronix.de> @@ -12,7 +12,7 @@ * Copyright (C) 2008-2009 Red Hat, Inc., Peter Zijlstra <pzijlstr@redhat.com> */ -#include <linux/perf_counter.h> +#include <linux/perf_event.h> #include <linux/kprobes.h> #include <linux/kernel.h> #include <linux/kdebug.h> @@ -46,19 +46,19 @@ * normal code. */ -#define MAX_HWCOUNTERS 2 +#define MAX_HWEVENTS 2 #define MAX_PERIOD ((1UL << 32) - 1) #define PIC_UPPER_INDEX 0 #define PIC_LOWER_INDEX 1 -struct cpu_hw_counters { - struct perf_counter *counters[MAX_HWCOUNTERS]; - unsigned long used_mask[BITS_TO_LONGS(MAX_HWCOUNTERS)]; - unsigned long active_mask[BITS_TO_LONGS(MAX_HWCOUNTERS)]; +struct cpu_hw_events { + struct perf_event *events[MAX_HWEVENTS]; + unsigned long used_mask[BITS_TO_LONGS(MAX_HWEVENTS)]; + unsigned long active_mask[BITS_TO_LONGS(MAX_HWEVENTS)]; int enabled; }; -DEFINE_PER_CPU(struct cpu_hw_counters, cpu_hw_counters) = { .enabled = 1, }; +DEFINE_PER_CPU(struct cpu_hw_events, cpu_hw_events) = { .enabled = 1, }; struct perf_event_map { u16 encoding; @@ -87,9 +87,9 @@ static const struct perf_event_map ultra3i_perfmon_event_map[] = { [PERF_COUNT_HW_CACHE_MISSES] = { 0x0009, PIC_UPPER }, }; -static const struct perf_event_map *ultra3i_event_map(int event) +static const struct perf_event_map *ultra3i_event_map(int event_id) { - return &ultra3i_perfmon_event_map[event]; + return &ultra3i_perfmon_event_map[event_id]; } static const struct sparc_pmu ultra3i_pmu = { @@ -111,9 +111,9 @@ static const struct perf_event_map niagara2_perfmon_event_map[] = { [PERF_COUNT_HW_BRANCH_MISSES] = { 0x0202, PIC_UPPER | PIC_LOWER }, }; -static const struct perf_event_map *niagara2_event_map(int event) +static const struct perf_event_map *niagara2_event_map(int event_id) { - return &niagara2_perfmon_event_map[event]; + return &niagara2_perfmon_event_map[event_id]; } static const struct sparc_pmu niagara2_pmu = { @@ -130,13 +130,13 @@ static const struct sparc_pmu niagara2_pmu = { static const struct sparc_pmu *sparc_pmu __read_mostly; -static u64 event_encoding(u64 event, int idx) +static u64 event_encoding(u64 event_id, int idx) { if (idx == PIC_UPPER_INDEX) - event <<= sparc_pmu->upper_shift; + event_id <<= sparc_pmu->upper_shift; else - event <<= sparc_pmu->lower_shift; - return event; + event_id <<= sparc_pmu->lower_shift; + return event_id; } static u64 mask_for_index(int idx) @@ -151,7 +151,7 @@ static u64 nop_for_index(int idx) sparc_pmu->lower_nop, idx); } -static inline void sparc_pmu_enable_counter(struct hw_perf_counter *hwc, +static inline void sparc_pmu_enable_event(struct hw_perf_event *hwc, int idx) { u64 val, mask = mask_for_index(idx); @@ -160,7 +160,7 @@ static inline void sparc_pmu_enable_counter(struct hw_perf_counter *hwc, pcr_ops->write((val & ~mask) | hwc->config); } -static inline void sparc_pmu_disable_counter(struct hw_perf_counter *hwc, +static inline void sparc_pmu_disable_event(struct hw_perf_event *hwc, int idx) { u64 mask = mask_for_index(idx); @@ -172,7 +172,7 @@ static inline void sparc_pmu_disable_counter(struct hw_perf_counter *hwc, void hw_perf_enable(void) { - struct cpu_hw_counters *cpuc = &__get_cpu_var(cpu_hw_counters); + struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); u64 val; int i; @@ -184,9 +184,9 @@ void hw_perf_enable(void) val = pcr_ops->read(); - for (i = 0; i < MAX_HWCOUNTERS; i++) { - struct perf_counter *cp = cpuc->counters[i]; - struct hw_perf_counter *hwc; + for (i = 0; i < MAX_HWEVENTS; i++) { + struct perf_event *cp = cpuc->events[i]; + struct hw_perf_event *hwc; if (!cp) continue; @@ -199,7 +199,7 @@ void hw_perf_enable(void) void hw_perf_disable(void) { - struct cpu_hw_counters *cpuc = &__get_cpu_var(cpu_hw_counters); + struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); u64 val; if (!cpuc->enabled) @@ -241,8 +241,8 @@ static void write_pmc(int idx, u64 val) write_pic(pic); } -static int sparc_perf_counter_set_period(struct perf_counter *counter, - struct hw_perf_counter *hwc, int idx) +static int sparc_perf_event_set_period(struct perf_event *event, + struct hw_perf_event *hwc, int idx) { s64 left = atomic64_read(&hwc->period_left); s64 period = hwc->sample_period; @@ -268,33 +268,33 @@ static int sparc_perf_counter_set_period(struct perf_counter *counter, write_pmc(idx, (u64)(-left) & 0xffffffff); - perf_counter_update_userpage(counter); + perf_event_update_userpage(event); return ret; } -static int sparc_pmu_enable(struct perf_counter *counter) +static int sparc_pmu_enable(struct perf_event *event) { - struct cpu_hw_counters *cpuc = &__get_cpu_var(cpu_hw_counters); - struct hw_perf_counter *hwc = &counter->hw; + struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); + struct hw_perf_event *hwc = &event->hw; int idx = hwc->idx; if (test_and_set_bit(idx, cpuc->used_mask)) return -EAGAIN; - sparc_pmu_disable_counter(hwc, idx); + sparc_pmu_disable_event(hwc, idx); - cpuc->counters[idx] = counter; + cpuc->events[idx] = event; set_bit(idx, cpuc->active_mask); - sparc_perf_counter_set_period(counter, hwc, idx); - sparc_pmu_enable_counter(hwc, idx); - perf_counter_update_userpage(counter); + sparc_perf_event_set_period(event, hwc, idx); + sparc_pmu_enable_event(hwc, idx); + perf_event_update_userpage(event); return 0; } -static u64 sparc_perf_counter_update(struct perf_counter *counter, - struct hw_perf_counter *hwc, int idx) +static u64 sparc_perf_event_update(struct perf_event *event, + struct hw_perf_event *hwc, int idx) { int shift = 64 - 32; u64 prev_raw_count, new_raw_count; @@ -311,79 +311,79 @@ again: delta = (new_raw_count << shift) - (prev_raw_count << shift); delta >>= shift; - atomic64_add(delta, &counter->count); + atomic64_add(delta, &event->count); atomic64_sub(delta, &hwc->period_left); return new_raw_count; } -static void sparc_pmu_disable(struct perf_counter *counter) +static void sparc_pmu_disable(struct perf_event *event) { - struct cpu_hw_counters *cpuc = &__get_cpu_var(cpu_hw_counters); - struct hw_perf_counter *hwc = &counter->hw; + struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); + struct hw_perf_event *hwc = &event->hw; int idx = hwc->idx; clear_bit(idx, cpuc->active_mask); - sparc_pmu_disable_counter(hwc, idx); + sparc_pmu_disable_event(hwc, idx); barrier(); - sparc_perf_counter_update(counter, hwc, idx); - cpuc->counters[idx] = NULL; + sparc_perf_event_update(event, hwc, idx); + cpuc->events[idx] = NULL; clear_bit(idx, cpuc->used_mask); - perf_counter_update_userpage(counter); + perf_event_update_userpage(event); } -static void sparc_pmu_read(struct perf_counter *counter) +static void sparc_pmu_read(struct perf_event *event) { - struct hw_perf_counter *hwc = &counter->hw; - sparc_perf_counter_update(counter, hwc, hwc->idx); + struct hw_perf_event *hwc = &event->hw; + sparc_perf_event_update(event, hwc, hwc->idx); } -static void sparc_pmu_unthrottle(struct perf_counter *counter) +static void sparc_pmu_unthrottle(struct perf_event *event) { - struct hw_perf_counter *hwc = &counter->hw; - sparc_pmu_enable_counter(hwc, hwc->idx); + struct hw_perf_event *hwc = &event->hw; + sparc_pmu_enable_event(hwc, hwc->idx); } -static atomic_t active_counters = ATOMIC_INIT(0); +static atomic_t active_events = ATOMIC_INIT(0); static DEFINE_MUTEX(pmc_grab_mutex); -void perf_counter_grab_pmc(void) +void perf_event_grab_pmc(void) { - if (atomic_inc_not_zero(&active_counters)) + if (atomic_inc_not_zero(&active_events)) return; mutex_lock(&pmc_grab_mutex); - if (atomic_read(&active_counters) == 0) { + if (atomic_read(&active_events) == 0) { if (atomic_read(&nmi_active) > 0) { on_each_cpu(stop_nmi_watchdog, NULL, 1); BUG_ON(atomic_read(&nmi_active) != 0); } - atomic_inc(&active_counters); + atomic_inc(&active_events); } mutex_unlock(&pmc_grab_mutex); } -void perf_counter_release_pmc(void) +void perf_event_release_pmc(void) { - if (atomic_dec_and_mutex_lock(&active_counters, &pmc_grab_mutex)) { + if (atomic_dec_and_mutex_lock(&active_events, &pmc_grab_mutex)) { if (atomic_read(&nmi_active) == 0) on_each_cpu(start_nmi_watchdog, NULL, 1); mutex_unlock(&pmc_grab_mutex); } } -static void hw_perf_counter_destroy(struct perf_counter *counter) +static void hw_perf_event_destroy(struct perf_event *event) { - perf_counter_release_pmc(); + perf_event_release_pmc(); } -static int __hw_perf_counter_init(struct perf_counter *counter) +static int __hw_perf_event_init(struct perf_event *event) { - struct perf_counter_attr *attr = &counter->attr; - struct hw_perf_counter *hwc = &counter->hw; + struct perf_event_attr *attr = &event->attr; + struct hw_perf_event *hwc = &event->hw; const struct perf_event_map *pmap; u64 enc; @@ -396,8 +396,8 @@ static int __hw_perf_counter_init(struct perf_counter *counter) if (attr->config >= sparc_pmu->max_events) return -EINVAL; - perf_counter_grab_pmc(); - counter->destroy = hw_perf_counter_destroy; + perf_event_grab_pmc(); + event->destroy = hw_perf_event_destroy; /* We save the enable bits in the config_base. So to * turn off sampling just write 'config', and to enable @@ -439,16 +439,16 @@ static const struct pmu pmu = { .unthrottle = sparc_pmu_unthrottle, }; -const struct pmu *hw_perf_counter_init(struct perf_counter *counter) +const struct pmu *hw_perf_event_init(struct perf_event *event) { - int err = __hw_perf_counter_init(counter); + int err = __hw_perf_event_init(event); if (err) return ERR_PTR(err); return &pmu; } -void perf_counter_print_debug(void) +void perf_event_print_debug(void) { unsigned long flags; u64 pcr, pic; @@ -471,16 +471,16 @@ void perf_counter_print_debug(void) local_irq_restore(flags); } -static int __kprobes perf_counter_nmi_handler(struct notifier_block *self, +static int __kprobes perf_event_nmi_handler(struct notifier_block *self, unsigned long cmd, void *__args) { struct die_args *args = __args; struct perf_sample_data data; - struct cpu_hw_counters *cpuc; + struct cpu_hw_events *cpuc; struct pt_regs *regs; int idx; - if (!atomic_read(&active_counters)) + if (!atomic_read(&active_events)) return NOTIFY_DONE; switch (cmd) { @@ -495,32 +495,32 @@ static int __kprobes perf_counter_nmi_handler(struct notifier_block *self, data.addr = 0; - cpuc = &__get_cpu_var(cpu_hw_counters); - for (idx = 0; idx < MAX_HWCOUNTERS; idx++) { - struct perf_counter *counter = cpuc->counters[idx]; - struct hw_perf_counter *hwc; + cpuc = &__get_cpu_var(cpu_hw_events); + for (idx = 0; idx < MAX_HWEVENTS; idx++) { + struct perf_event *event = cpuc->events[idx]; + struct hw_perf_event *hwc; u64 val; if (!test_bit(idx, cpuc->active_mask)) continue; - hwc = &counter->hw; - val = sparc_perf_counter_update(counter, hwc, idx); + hwc = &event->hw; + val = sparc_perf_event_update(event, hwc, idx); if (val & (1ULL << 31)) continue; - data.period = counter->hw.last_period; - if (!sparc_perf_counter_set_period(counter, hwc, idx)) + data.period = event->hw.last_period; + if (!sparc_perf_event_set_period(event, hwc, idx)) continue; - if (perf_counter_overflow(counter, 1, &data, regs)) - sparc_pmu_disable_counter(hwc, idx); + if (perf_event_overflow(event, 1, &data, regs)) + sparc_pmu_disable_event(hwc, idx); } return NOTIFY_STOP; } -static __read_mostly struct notifier_block perf_counter_nmi_notifier = { - .notifier_call = perf_counter_nmi_handler, +static __read_mostly struct notifier_block perf_event_nmi_notifier = { + .notifier_call = perf_event_nmi_handler, }; static bool __init supported_pmu(void) @@ -536,9 +536,9 @@ static bool __init supported_pmu(void) return false; } -void __init init_hw_perf_counters(void) +void __init init_hw_perf_events(void) { - pr_info("Performance counters: "); + pr_info("Performance events: "); if (!supported_pmu()) { pr_cont("No support for PMU type '%s'\n", sparc_pmu_type); @@ -547,10 +547,10 @@ void __init init_hw_perf_counters(void) pr_cont("Supported PMU type is '%s'\n", sparc_pmu_type); - /* All sparc64 PMUs currently have 2 counters. But this simple - * driver only supports one active counter at a time. + /* All sparc64 PMUs currently have 2 events. But this simple + * driver only supports one active event at a time. */ - perf_max_counters = 1; + perf_max_events = 1; - register_die_notifier(&perf_counter_nmi_notifier); + register_die_notifier(&perf_event_nmi_notifier); } diff --git a/arch/sparc/kernel/systbls_32.S b/arch/sparc/kernel/systbls_32.S index 0418157..0f1658d 100644 --- a/arch/sparc/kernel/systbls_32.S +++ b/arch/sparc/kernel/systbls_32.S @@ -82,5 +82,5 @@ sys_call_table: /*310*/ .long sys_utimensat, sys_signalfd, sys_timerfd_create, sys_eventfd, sys_fallocate /*315*/ .long sys_timerfd_settime, sys_timerfd_gettime, sys_signalfd4, sys_eventfd2, sys_epoll_create1 /*320*/ .long sys_dup3, sys_pipe2, sys_inotify_init1, sys_accept4, sys_preadv -/*325*/ .long sys_pwritev, sys_rt_tgsigqueueinfo, sys_perf_counter_open +/*325*/ .long sys_pwritev, sys_rt_tgsigqueueinfo, sys_perf_event_open diff --git a/arch/sparc/kernel/systbls_64.S b/arch/sparc/kernel/systbls_64.S index 91b06b7..009825f 100644 --- a/arch/sparc/kernel/systbls_64.S +++ b/arch/sparc/kernel/systbls_64.S @@ -83,7 +83,7 @@ sys_call_table32: /*310*/ .word compat_sys_utimensat, compat_sys_signalfd, sys_timerfd_create, sys_eventfd, compat_sys_fallocate .word compat_sys_timerfd_settime, compat_sys_timerfd_gettime, compat_sys_signalfd4, sys_eventfd2, sys_epoll_create1 /*320*/ .word sys_dup3, sys_pipe2, sys_inotify_init1, sys_accept4, compat_sys_preadv - .word compat_sys_pwritev, compat_sys_rt_tgsigqueueinfo, sys_perf_counter_open + .word compat_sys_pwritev, compat_sys_rt_tgsigqueueinfo, sys_perf_event_open #endif /* CONFIG_COMPAT */ @@ -158,4 +158,4 @@ sys_call_table: /*310*/ .word sys_utimensat, sys_signalfd, sys_timerfd_create, sys_eventfd, sys_fallocate .word sys_timerfd_settime, sys_timerfd_gettime, sys_signalfd4, sys_eventfd2, sys_epoll_create1 /*320*/ .word sys_dup3, sys_pipe2, sys_inotify_init1, sys_accept4, sys_preadv - .word sys_pwritev, sys_rt_tgsigqueueinfo, sys_perf_counter_open + .word sys_pwritev, sys_rt_tgsigqueueinfo, sys_perf_event_open diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 51c5901..e4ff5d1 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -24,7 +24,7 @@ config X86 select HAVE_UNSTABLE_SCHED_CLOCK select HAVE_IDE select HAVE_OPROFILE - select HAVE_PERF_COUNTERS if (!M386 && !M486) + select HAVE_PERF_EVENTS if (!M386 && !M486) select HAVE_IOREMAP_PROT select HAVE_KPROBES select ARCH_WANT_OPTIONAL_GPIOLIB diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S index ba331bf..74619c4 100644 --- a/arch/x86/ia32/ia32entry.S +++ b/arch/x86/ia32/ia32entry.S @@ -831,5 +831,5 @@ ia32_sys_call_table: .quad compat_sys_preadv .quad compat_sys_pwritev .quad compat_sys_rt_tgsigqueueinfo /* 335 */ - .quad sys_perf_counter_open + .quad sys_perf_event_open ia32_syscall_end: diff --git a/arch/x86/include/asm/entry_arch.h b/arch/x86/include/asm/entry_arch.h index 5e3f204..f5693c8 100644 --- a/arch/x86/include/asm/entry_arch.h +++ b/arch/x86/include/asm/entry_arch.h @@ -49,7 +49,7 @@ BUILD_INTERRUPT(apic_timer_interrupt,LOCAL_TIMER_VECTOR) BUILD_INTERRUPT(error_interrupt,ERROR_APIC_VECTOR) BUILD_INTERRUPT(spurious_interrupt,SPURIOUS_APIC_VECTOR) -#ifdef CONFIG_PERF_COUNTERS +#ifdef CONFIG_PERF_EVENTS BUILD_INTERRUPT(perf_pending_interrupt, LOCAL_PENDING_VECTOR) #endif diff --git a/arch/x86/include/asm/perf_counter.h b/arch/x86/include/asm/perf_event.h index e7b7c93..ad7ce3f 100644 --- a/arch/x86/include/asm/perf_counter.h +++ b/arch/x86/include/asm/perf_event.h @@ -1,8 +1,8 @@ -#ifndef _ASM_X86_PERF_COUNTER_H -#define _ASM_X86_PERF_COUNTER_H +#ifndef _ASM_X86_PERF_EVENT_H +#define _ASM_X86_PERF_EVENT_H /* - * Performance counter hw details: + * Performance event hw details: */ #define X86_PMC_MAX_GENERIC 8 @@ -43,7 +43,7 @@ union cpuid10_eax { struct { unsigned int version_id:8; - unsigned int num_counters:8; + unsigned int num_events:8; unsigned int bit_width:8; unsigned int mask_length:8; } split; @@ -52,7 +52,7 @@ union cpuid10_eax { union cpuid10_edx { struct { - unsigned int num_counters_fixed:4; + unsigned int num_events_fixed:4; unsigned int reserved:28; } split; unsigned int full; @@ -60,7 +60,7 @@ union cpuid10_edx { /* - * Fixed-purpose performance counters: + * Fixed-purpose performance events: */ /* @@ -87,22 +87,22 @@ union cpuid10_edx { /* * We model BTS tracing as another fixed-mode PMC. * - * We choose a value in the middle of the fixed counter range, since lower - * values are used by actual fixed counters and higher values are used + * We choose a value in the middle of the fixed event range, since lower + * values are used by actual fixed events and higher values are used * to indicate other overflow conditions in the PERF_GLOBAL_STATUS msr. */ #define X86_PMC_IDX_FIXED_BTS (X86_PMC_IDX_FIXED + 16) -#ifdef CONFIG_PERF_COUNTERS -extern void init_hw_perf_counters(void); -extern void perf_counters_lapic_init(void); +#ifdef CONFIG_PERF_EVENTS +extern void init_hw_perf_events(void); +extern void perf_events_lapic_init(void); -#define PERF_COUNTER_INDEX_OFFSET 0 +#define PERF_EVENT_INDEX_OFFSET 0 #else -static inline void init_hw_perf_counters(void) { } -static inline void perf_counters_lapic_init(void) { } +static inline void init_hw_perf_events(void) { } +static inline void perf_events_lapic_init(void) { } #endif -#endif /* _ASM_X86_PERF_COUNTER_H */ +#endif /* _ASM_X86_PERF_EVENT_H */ diff --git a/arch/x86/include/asm/unistd_32.h b/arch/x86/include/asm/unistd_32.h index 8deaada..6fb3c20 100644 --- a/arch/x86/include/asm/unistd_32.h +++ b/arch/x86/include/asm/unistd_32.h @@ -341,7 +341,7 @@ #define __NR_preadv 333 #define __NR_pwritev 334 #define __NR_rt_tgsigqueueinfo 335 -#define __NR_perf_counter_open 336 +#define __NR_perf_event_open 336 #ifdef __KERNEL__ diff --git a/arch/x86/include/asm/unistd_64.h b/arch/x86/include/asm/unistd_64.h index b9f3c60..8d3ad0a 100644 --- a/arch/x86/include/asm/unistd_64.h +++ b/arch/x86/include/asm/unistd_64.h @@ -659,8 +659,8 @@ __SYSCALL(__NR_preadv, sys_preadv) __SYSCALL(__NR_pwritev, sys_pwritev) #define __NR_rt_tgsigqueueinfo 297 __SYSCALL(__NR_rt_tgsigqueueinfo, sys_rt_tgsigqueueinfo) -#define __NR_perf_counter_open 298 -__SYSCALL(__NR_perf_counter_open, sys_perf_counter_open) +#define __NR_perf_event_open 298 +__SYSCALL(__NR_perf_event_open, sys_perf_event_open) #ifndef __NO_STUBS #define __ARCH_WANT_OLD_READDIR diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index a58ef98..894aa97 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -14,7 +14,7 @@ * Mikael Pettersson : PM converted to driver model. */ -#include <linux/perf_counter.h> +#include <linux/perf_event.h> #include <linux/kernel_stat.h> #include <linux/mc146818rtc.h> #include <linux/acpi_pmtmr.h> @@ -35,7 +35,7 @@ #include <linux/smp.h> #include <linux/mm.h> -#include <asm/perf_counter.h> +#include <asm/perf_event.h> #include <asm/x86_init.h> #include <asm/pgalloc.h> #include <asm/atomic.h> @@ -1189,7 +1189,7 @@ void __cpuinit setup_local_APIC(void) apic_write(APIC_ESR, 0); } #endif - perf_counters_lapic_init(); + perf_events_lapic_init(); preempt_disable(); diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile index 8dd3063..68537e9 100644 --- a/arch/x86/kernel/cpu/Makefile +++ b/arch/x86/kernel/cpu/Makefile @@ -27,7 +27,7 @@ obj-$(CONFIG_CPU_SUP_CENTAUR) += centaur.o obj-$(CONFIG_CPU_SUP_TRANSMETA_32) += transmeta.o obj-$(CONFIG_CPU_SUP_UMC_32) += umc.o -obj-$(CONFIG_PERF_COUNTERS) += perf_counter.o +obj-$(CONFIG_PERF_EVENTS) += perf_event.o obj-$(CONFIG_X86_MCE) += mcheck/ obj-$(CONFIG_MTRR) += mtrr/ diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index 2fea97e..cc25c2b 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -13,7 +13,7 @@ #include <linux/io.h> #include <asm/stackprotector.h> -#include <asm/perf_counter.h> +#include <asm/perf_event.h> #include <asm/mmu_context.h> #include <asm/hypervisor.h> #include <asm/processor.h> @@ -869,7 +869,7 @@ void __init identify_boot_cpu(void) #else vgetcpu_set_mode(); #endif - init_hw_perf_counters(); + init_hw_perf_events(); } void __cpuinit identify_secondary_cpu(struct cpuinfo_x86 *c) diff --git a/arch/x86/kernel/cpu/perf_counter.c b/arch/x86/kernel/cpu/perf_event.c index a6c8b27..a3c7adb 100644 --- a/arch/x86/kernel/cpu/perf_counter.c +++ b/arch/x86/kernel/cpu/perf_event.c @@ -1,5 +1,5 @@ /* - * Performance counter x86 architecture code + * Performance events x86 architecture code * * Copyright (C) 2008 Thomas Gleixner <tglx@linutronix.de> * Copyright (C) 2008-2009 Red Hat, Inc., Ingo Molnar @@ -11,7 +11,7 @@ * For licencing details see kernel-base/COPYING */ -#include <linux/perf_counter.h> +#include <linux/perf_event.h> #include <linux/capability.h> #include <linux/notifier.h> #include <linux/hardirq.h> @@ -27,10 +27,10 @@ #include <asm/stacktrace.h> #include <asm/nmi.h> -static u64 perf_counter_mask __read_mostly; +static u64 perf_event_mask __read_mostly; -/* The maximal number of PEBS counters: */ -#define MAX_PEBS_COUNTERS 4 +/* The maximal number of PEBS events: */ +#define MAX_PEBS_EVENTS 4 /* The size of a BTS record in bytes: */ #define BTS_RECORD_SIZE 24 @@ -65,11 +65,11 @@ struct debug_store { u64 pebs_index; u64 pebs_absolute_maximum; u64 pebs_interrupt_threshold; - u64 pebs_counter_reset[MAX_PEBS_COUNTERS]; + u64 pebs_event_reset[MAX_PEBS_EVENTS]; }; -struct cpu_hw_counters { - struct perf_counter *counters[X86_PMC_IDX_MAX]; +struct cpu_hw_events { + struct perf_event *events[X86_PMC_IDX_MAX]; unsigned long used_mask[BITS_TO_LONGS(X86_PMC_IDX_MAX)]; unsigned long active_mask[BITS_TO_LONGS(X86_PMC_IDX_MAX)]; unsigned long interrupts; @@ -86,17 +86,17 @@ struct x86_pmu { int (*handle_irq)(struct pt_regs *); void (*disable_all)(void); void (*enable_all)(void); - void (*enable)(struct hw_perf_counter *, int); - void (*disable)(struct hw_perf_counter *, int); + void (*enable)(struct hw_perf_event *, int); + void (*disable)(struct hw_perf_event *, int); unsigned eventsel; unsigned perfctr; u64 (*event_map)(int); u64 (*raw_event)(u64); int max_events; - int num_counters; - int num_counters_fixed; - int counter_bits; - u64 counter_mask; + int num_events; + int num_events_fixed; + int event_bits; + u64 event_mask; int apic; u64 max_period; u64 intel_ctrl; @@ -106,7 +106,7 @@ struct x86_pmu { static struct x86_pmu x86_pmu __read_mostly; -static DEFINE_PER_CPU(struct cpu_hw_counters, cpu_hw_counters) = { +static DEFINE_PER_CPU(struct cpu_hw_events, cpu_hw_events) = { .enabled = 1, }; @@ -124,35 +124,35 @@ static const u64 p6_perfmon_event_map[] = [PERF_COUNT_HW_BUS_CYCLES] = 0x0062, }; -static u64 p6_pmu_event_map(int event) +static u64 p6_pmu_event_map(int hw_event) { - return p6_perfmon_event_map[event]; + return p6_perfmon_event_map[hw_event]; } /* - * Counter setting that is specified not to count anything. + * Event setting that is specified not to count anything. * We use this to effectively disable a counter. * * L2_RQSTS with 0 MESI unit mask. */ -#define P6_NOP_COUNTER 0x0000002EULL +#define P6_NOP_EVENT 0x0000002EULL -static u64 p6_pmu_raw_event(u64 event) +static u64 p6_pmu_raw_event(u64 hw_event) { #define P6_EVNTSEL_EVENT_MASK 0x000000FFULL #define P6_EVNTSEL_UNIT_MASK 0x0000FF00ULL #define P6_EVNTSEL_EDGE_MASK 0x00040000ULL #define P6_EVNTSEL_INV_MASK 0x00800000ULL -#define P6_EVNTSEL_COUNTER_MASK 0xFF000000ULL +#define P6_EVNTSEL_REG_MASK 0xFF000000ULL #define P6_EVNTSEL_MASK \ (P6_EVNTSEL_EVENT_MASK | \ P6_EVNTSEL_UNIT_MASK | \ P6_EVNTSEL_EDGE_MASK | \ P6_EVNTSEL_INV_MASK | \ - P6_EVNTSEL_COUNTER_MASK) + P6_EVNTSEL_REG_MASK) - return event & P6_EVNTSEL_MASK; + return hw_event & P6_EVNTSEL_MASK; } @@ -170,16 +170,16 @@ static const u64 intel_perfmon_event_map[] = [PERF_COUNT_HW_BUS_CYCLES] = 0x013c, }; -static u64 intel_pmu_event_map(int event) +static u64 intel_pmu_event_map(int hw_event) { - return intel_perfmon_event_map[event]; + return intel_perfmon_event_map[hw_event]; } /* - * Generalized hw caching related event table, filled + * Generalized hw caching related hw_event table, filled * in on a per model basis. A value of 0 means - * 'not supported', -1 means 'event makes no sense on - * this CPU', any other value means the raw event + * 'not supported', -1 means 'hw_event makes no sense on + * this CPU', any other value means the raw hw_event * ID. */ @@ -463,22 +463,22 @@ static const u64 atom_hw_cache_event_ids }, }; -static u64 intel_pmu_raw_event(u64 event) +static u64 intel_pmu_raw_event(u64 hw_event) { #define CORE_EVNTSEL_EVENT_MASK 0x000000FFULL #define CORE_EVNTSEL_UNIT_MASK 0x0000FF00ULL #define CORE_EVNTSEL_EDGE_MASK 0x00040000ULL #define CORE_EVNTSEL_INV_MASK 0x00800000ULL -#define CORE_EVNTSEL_COUNTER_MASK 0xFF000000ULL +#define CORE_EVNTSEL_REG_MASK 0xFF000000ULL #define CORE_EVNTSEL_MASK \ (CORE_EVNTSEL_EVENT_MASK | \ CORE_EVNTSEL_UNIT_MASK | \ CORE_EVNTSEL_EDGE_MASK | \ CORE_EVNTSEL_INV_MASK | \ - CORE_EVNTSEL_COUNTER_MASK) + CORE_EVNTSEL_REG_MASK) - return event & CORE_EVNTSEL_MASK; + return hw_event & CORE_EVNTSEL_MASK; } static const u64 amd_hw_cache_event_ids @@ -585,39 +585,39 @@ static const u64 amd_perfmon_event_map[] = [PERF_COUNT_HW_BRANCH_MISSES] = 0x00c5, }; -static u64 amd_pmu_event_map(int event) +static u64 amd_pmu_event_map(int hw_event) { - return amd_perfmon_event_map[event]; + return amd_perfmon_event_map[hw_event]; } -static u64 amd_pmu_raw_event(u64 event) +static u64 amd_pmu_raw_event(u64 hw_event) { #define K7_EVNTSEL_EVENT_MASK 0x7000000FFULL #define K7_EVNTSEL_UNIT_MASK 0x00000FF00ULL #define K7_EVNTSEL_EDGE_MASK 0x000040000ULL #define K7_EVNTSEL_INV_MASK 0x000800000ULL -#define K7_EVNTSEL_COUNTER_MASK 0x0FF000000ULL +#define K7_EVNTSEL_REG_MASK 0x0FF000000ULL #define K7_EVNTSEL_MASK \ (K7_EVNTSEL_EVENT_MASK | \ K7_EVNTSEL_UNIT_MASK | \ K7_EVNTSEL_EDGE_MASK | \ K7_EVNTSEL_INV_MASK | \ - K7_EVNTSEL_COUNTER_MASK) + K7_EVNTSEL_REG_MASK) - return event & K7_EVNTSEL_MASK; + return hw_event & K7_EVNTSEL_MASK; } /* - * Propagate counter elapsed time into the generic counter. - * Can only be executed on the CPU where the counter is active. + * Propagate event elapsed time into the generic event. + * Can only be executed on the CPU where the event is active. * Returns the delta events processed. */ static u64 -x86_perf_counter_update(struct perf_counter *counter, - struct hw_perf_counter *hwc, int idx) +x86_perf_event_update(struct perf_event *event, + struct hw_perf_event *hwc, int idx) { - int shift = 64 - x86_pmu.counter_bits; + int shift = 64 - x86_pmu.event_bits; u64 prev_raw_count, new_raw_count; s64 delta; @@ -625,15 +625,15 @@ x86_perf_counter_update(struct perf_counter *counter, return 0; /* - * Careful: an NMI might modify the previous counter value. + * Careful: an NMI might modify the previous event value. * * Our tactic to handle this is to first atomically read and * exchange a new raw count - then add that new-prev delta - * count to the generic counter atomically: + * count to the generic event atomically: */ again: prev_raw_count = atomic64_read(&hwc->prev_count); - rdmsrl(hwc->counter_base + idx, new_raw_count); + rdmsrl(hwc->event_base + idx, new_raw_count); if (atomic64_cmpxchg(&hwc->prev_count, prev_raw_count, new_raw_count) != prev_raw_count) @@ -642,7 +642,7 @@ again: /* * Now we have the new raw value and have updated the prev * timestamp already. We can now calculate the elapsed delta - * (counter-)time and add that to the generic counter. + * (event-)time and add that to the generic event. * * Careful, not all hw sign-extends above the physical width * of the count. @@ -650,13 +650,13 @@ again: delta = (new_raw_count << shift) - (prev_raw_count << shift); delta >>= shift; - atomic64_add(delta, &counter->count); + atomic64_add(delta, &event->count); atomic64_sub(delta, &hwc->period_left); return new_raw_count; } -static atomic_t active_counters; +static atomic_t active_events; static DEFINE_MUTEX(pmc_reserve_mutex); static bool reserve_pmc_hardware(void) @@ -667,12 +667,12 @@ static bool reserve_pmc_hardware(void) if (nmi_watchdog == NMI_LOCAL_APIC) disable_lapic_nmi_watchdog(); - for (i = 0; i < x86_pmu.num_counters; i++) { + for (i = 0; i < x86_pmu.num_events; i++) { if (!reserve_perfctr_nmi(x86_pmu.perfctr + i)) goto perfctr_fail; } - for (i = 0; i < x86_pmu.num_counters; i++) { + for (i = 0; i < x86_pmu.num_events; i++) { if (!reserve_evntsel_nmi(x86_pmu.eventsel + i)) goto eventsel_fail; } @@ -685,7 +685,7 @@ eventsel_fail: for (i--; i >= 0; i--) release_evntsel_nmi(x86_pmu.eventsel + i); - i = x86_pmu.num_counters; + i = x86_pmu.num_events; perfctr_fail: for (i--; i >= 0; i--) @@ -703,7 +703,7 @@ static void release_pmc_hardware(void) #ifdef CONFIG_X86_LOCAL_APIC int i; - for (i = 0; i < x86_pmu.num_counters; i++) { + for (i = 0; i < x86_pmu.num_events; i++) { release_perfctr_nmi(x86_pmu.perfctr + i); release_evntsel_nmi(x86_pmu.eventsel + i); } @@ -720,7 +720,7 @@ static inline bool bts_available(void) static inline void init_debug_store_on_cpu(int cpu) { - struct debug_store *ds = per_cpu(cpu_hw_counters, cpu).ds; + struct debug_store *ds = per_cpu(cpu_hw_events, cpu).ds; if (!ds) return; @@ -732,7 +732,7 @@ static inline void init_debug_store_on_cpu(int cpu) static inline void fini_debug_store_on_cpu(int cpu) { - if (!per_cpu(cpu_hw_counters, cpu).ds) + if (!per_cpu(cpu_hw_events, cpu).ds) return; wrmsr_on_cpu(cpu, MSR_IA32_DS_AREA, 0, 0); @@ -751,12 +751,12 @@ static void release_bts_hardware(void) fini_debug_store_on_cpu(cpu); for_each_possible_cpu(cpu) { - struct debug_store *ds = per_cpu(cpu_hw_counters, cpu).ds; + struct debug_store *ds = per_cpu(cpu_hw_events, cpu).ds; if (!ds) continue; - per_cpu(cpu_hw_counters, cpu).ds = NULL; + per_cpu(cpu_hw_events, cpu).ds = NULL; kfree((void *)(unsigned long)ds->bts_buffer_base); kfree(ds); @@ -796,7 +796,7 @@ static int reserve_bts_hardware(void) ds->bts_interrupt_threshold = ds->bts_absolute_maximum - BTS_OVFL_TH; - per_cpu(cpu_hw_counters, cpu).ds = ds; + per_cpu(cpu_hw_events, cpu).ds = ds; err = 0; } @@ -812,9 +812,9 @@ static int reserve_bts_hardware(void) return err; } -static void hw_perf_counter_destroy(struct perf_counter *counter) +static void hw_perf_event_destroy(struct perf_event *event) { - if (atomic_dec_and_mutex_lock(&active_counters, &pmc_reserve_mutex)) { + if (atomic_dec_and_mutex_lock(&active_events, &pmc_reserve_mutex)) { release_pmc_hardware(); release_bts_hardware(); mutex_unlock(&pmc_reserve_mutex); @@ -827,7 +827,7 @@ static inline int x86_pmu_initialized(void) } static inline int -set_ext_hw_attr(struct hw_perf_counter *hwc, struct perf_counter_attr *attr) +set_ext_hw_attr(struct hw_perf_event *hwc, struct perf_event_attr *attr) { unsigned int cache_type, cache_op, cache_result; u64 config, val; @@ -880,7 +880,7 @@ static void intel_pmu_enable_bts(u64 config) static void intel_pmu_disable_bts(void) { - struct cpu_hw_counters *cpuc = &__get_cpu_var(cpu_hw_counters); + struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); unsigned long debugctlmsr; if (!cpuc->ds) @@ -898,10 +898,10 @@ static void intel_pmu_disable_bts(void) /* * Setup the hardware configuration for a given attr_type */ -static int __hw_perf_counter_init(struct perf_counter *counter) +static int __hw_perf_event_init(struct perf_event *event) { - struct perf_counter_attr *attr = &counter->attr; - struct hw_perf_counter *hwc = &counter->hw; + struct perf_event_attr *attr = &event->attr; + struct hw_perf_event *hwc = &event->hw; u64 config; int err; @@ -909,22 +909,22 @@ static int __hw_perf_counter_init(struct perf_counter *counter) return -ENODEV; err = 0; - if (!atomic_inc_not_zero(&active_counters)) { + if (!atomic_inc_not_zero(&active_events)) { mutex_lock(&pmc_reserve_mutex); - if (atomic_read(&active_counters) == 0) { + if (atomic_read(&active_events) == 0) { if (!reserve_pmc_hardware()) err = -EBUSY; else err = reserve_bts_hardware(); } if (!err) - atomic_inc(&active_counters); + atomic_inc(&active_events); mutex_unlock(&pmc_reserve_mutex); } if (err) return err; - counter->destroy = hw_perf_counter_destroy; + event->destroy = hw_perf_event_destroy; /* * Generate PMC IRQs: @@ -948,15 +948,15 @@ static int __hw_perf_counter_init(struct perf_counter *counter) /* * If we have a PMU initialized but no APIC * interrupts, we cannot sample hardware - * counters (user-space has to fall back and - * sample via a hrtimer based software counter): + * events (user-space has to fall back and + * sample via a hrtimer based software event): */ if (!x86_pmu.apic) return -EOPNOTSUPP; } /* - * Raw event type provide the config in the event structure + * Raw hw_event type provide the config in the hw_event structure */ if (attr->type == PERF_TYPE_RAW) { hwc->config |= x86_pmu.raw_event(attr->config); @@ -1001,7 +1001,7 @@ static int __hw_perf_counter_init(struct perf_counter *counter) static void p6_pmu_disable_all(void) { - struct cpu_hw_counters *cpuc = &__get_cpu_var(cpu_hw_counters); + struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); u64 val; if (!cpuc->enabled) @@ -1018,7 +1018,7 @@ static void p6_pmu_disable_all(void) static void intel_pmu_disable_all(void) { - struct cpu_hw_counters *cpuc = &__get_cpu_var(cpu_hw_counters); + struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); if (!cpuc->enabled) return; @@ -1034,7 +1034,7 @@ static void intel_pmu_disable_all(void) static void amd_pmu_disable_all(void) { - struct cpu_hw_counters *cpuc = &__get_cpu_var(cpu_hw_counters); + struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); int idx; if (!cpuc->enabled) @@ -1043,12 +1043,12 @@ static void amd_pmu_disable_all(void) cpuc->enabled = 0; /* * ensure we write the disable before we start disabling the - * counters proper, so that amd_pmu_enable_counter() does the + * events proper, so that amd_pmu_enable_event() does the * right thing. */ barrier(); - for (idx = 0; idx < x86_pmu.num_counters; idx++) { + for (idx = 0; idx < x86_pmu.num_events; idx++) { u64 val; if (!test_bit(idx, cpuc->active_mask)) @@ -1070,7 +1070,7 @@ void hw_perf_disable(void) static void p6_pmu_enable_all(void) { - struct cpu_hw_counters *cpuc = &__get_cpu_var(cpu_hw_counters); + struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); unsigned long val; if (cpuc->enabled) @@ -1087,7 +1087,7 @@ static void p6_pmu_enable_all(void) static void intel_pmu_enable_all(void) { - struct cpu_hw_counters *cpuc = &__get_cpu_var(cpu_hw_counters); + struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); if (cpuc->enabled) return; @@ -1098,19 +1098,19 @@ static void intel_pmu_enable_all(void) wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, x86_pmu.intel_ctrl); if (test_bit(X86_PMC_IDX_FIXED_BTS, cpuc->active_mask)) { - struct perf_counter *counter = - cpuc->counters[X86_PMC_IDX_FIXED_BTS]; + struct perf_event *event = + cpuc->events[X86_PMC_IDX_FIXED_BTS]; - if (WARN_ON_ONCE(!counter)) + if (WARN_ON_ONCE(!event)) return; - intel_pmu_enable_bts(counter->hw.config); + intel_pmu_enable_bts(event->hw.config); } } static void amd_pmu_enable_all(void) { - struct cpu_hw_counters *cpuc = &__get_cpu_var(cpu_hw_counters); + struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); int idx; if (cpuc->enabled) @@ -1119,14 +1119,14 @@ static void amd_pmu_enable_all(void) cpuc->enabled = 1; barrier(); - for (idx = 0; idx < x86_pmu.num_counters; idx++) { - struct perf_counter *counter = cpuc->counters[idx]; + for (idx = 0; idx < x86_pmu.num_events; idx++) { + struct perf_event *event = cpuc->events[idx]; u64 val; if (!test_bit(idx, cpuc->active_mask)) continue; - val = counter->hw.config; + val = event->hw.config; val |= ARCH_PERFMON_EVENTSEL0_ENABLE; wrmsrl(MSR_K7_EVNTSEL0 + idx, val); } @@ -1153,19 +1153,19 @@ static inline void intel_pmu_ack_status(u64 ack) wrmsrl(MSR_CORE_PERF_GLOBAL_OVF_CTRL, ack); } -static inline void x86_pmu_enable_counter(struct hw_perf_counter *hwc, int idx) +static inline void x86_pmu_enable_event(struct hw_perf_event *hwc, int idx) { (void)checking_wrmsrl(hwc->config_base + idx, hwc->config | ARCH_PERFMON_EVENTSEL0_ENABLE); } -static inline void x86_pmu_disable_counter(struct hw_perf_counter *hwc, int idx) +static inline void x86_pmu_disable_event(struct hw_perf_event *hwc, int idx) { (void)checking_wrmsrl(hwc->config_base + idx, hwc->config); } static inline void -intel_pmu_disable_fixed(struct hw_perf_counter *hwc, int __idx) +intel_pmu_disable_fixed(struct hw_perf_event *hwc, int __idx) { int idx = __idx - X86_PMC_IDX_FIXED; u64 ctrl_val, mask; @@ -1178,10 +1178,10 @@ intel_pmu_disable_fixed(struct hw_perf_counter *hwc, int __idx) } static inline void -p6_pmu_disable_counter(struct hw_perf_counter *hwc, int idx) +p6_pmu_disable_event(struct hw_perf_event *hwc, int idx) { - struct cpu_hw_counters *cpuc = &__get_cpu_var(cpu_hw_counters); - u64 val = P6_NOP_COUNTER; + struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); + u64 val = P6_NOP_EVENT; if (cpuc->enabled) val |= ARCH_PERFMON_EVENTSEL0_ENABLE; @@ -1190,7 +1190,7 @@ p6_pmu_disable_counter(struct hw_perf_counter *hwc, int idx) } static inline void -intel_pmu_disable_counter(struct hw_perf_counter *hwc, int idx) +intel_pmu_disable_event(struct hw_perf_event *hwc, int idx) { if (unlikely(idx == X86_PMC_IDX_FIXED_BTS)) { intel_pmu_disable_bts(); @@ -1202,24 +1202,24 @@ intel_pmu_disable_counter(struct hw_perf_counter *hwc, int idx) return; } - x86_pmu_disable_counter(hwc, idx); + x86_pmu_disable_event(hwc, idx); } static inline void -amd_pmu_disable_counter(struct hw_perf_counter *hwc, int idx) +amd_pmu_disable_event(struct hw_perf_event *hwc, int idx) { - x86_pmu_disable_counter(hwc, idx); + x86_pmu_disable_event(hwc, idx); } static DEFINE_PER_CPU(u64 [X86_PMC_IDX_MAX], pmc_prev_left); /* * Set the next IRQ period, based on the hwc->period_left value. - * To be called with the counter disabled in hw: + * To be called with the event disabled in hw: */ static int -x86_perf_counter_set_period(struct perf_counter *counter, - struct hw_perf_counter *hwc, int idx) +x86_perf_event_set_period(struct perf_event *event, + struct hw_perf_event *hwc, int idx) { s64 left = atomic64_read(&hwc->period_left); s64 period = hwc->sample_period; @@ -1245,7 +1245,7 @@ x86_perf_counter_set_period(struct perf_counter *counter, ret = 1; } /* - * Quirk: certain CPUs dont like it if just 1 event is left: + * Quirk: certain CPUs dont like it if just 1 hw_event is left: */ if (unlikely(left < 2)) left = 2; @@ -1256,21 +1256,21 @@ x86_perf_counter_set_period(struct perf_counter *counter, per_cpu(pmc_prev_left[idx], smp_processor_id()) = left; /* - * The hw counter starts counting from this counter offset, + * The hw event starts counting from this event offset, * mark it to be able to extra future deltas: */ atomic64_set(&hwc->prev_count, (u64)-left); - err = checking_wrmsrl(hwc->counter_base + idx, - (u64)(-left) & x86_pmu.counter_mask); + err = checking_wrmsrl(hwc->event_base + idx, + (u64)(-left) & x86_pmu.event_mask); - perf_counter_update_userpage(counter); + perf_event_update_userpage(event); return ret; } static inline void -intel_pmu_enable_fixed(struct hw_perf_counter *hwc, int __idx) +intel_pmu_enable_fixed(struct hw_perf_event *hwc, int __idx) { int idx = __idx - X86_PMC_IDX_FIXED; u64 ctrl_val, bits, mask; @@ -1295,9 +1295,9 @@ intel_pmu_enable_fixed(struct hw_perf_counter *hwc, int __idx) err = checking_wrmsrl(hwc->config_base, ctrl_val); } -static void p6_pmu_enable_counter(struct hw_perf_counter *hwc, int idx) +static void p6_pmu_enable_event(struct hw_perf_event *hwc, int idx) { - struct cpu_hw_counters *cpuc = &__get_cpu_var(cpu_hw_counters); + struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); u64 val; val = hwc->config; @@ -1308,10 +1308,10 @@ static void p6_pmu_enable_counter(struct hw_perf_counter *hwc, int idx) } -static void intel_pmu_enable_counter(struct hw_perf_counter *hwc, int idx) +static void intel_pmu_enable_event(struct hw_perf_event *hwc, int idx) { if (unlikely(idx == X86_PMC_IDX_FIXED_BTS)) { - if (!__get_cpu_var(cpu_hw_counters).enabled) + if (!__get_cpu_var(cpu_hw_events).enabled) return; intel_pmu_enable_bts(hwc->config); @@ -1323,134 +1323,134 @@ static void intel_pmu_enable_counter(struct hw_perf_counter *hwc, int idx) return; } - x86_pmu_enable_counter(hwc, idx); + x86_pmu_enable_event(hwc, idx); } -static void amd_pmu_enable_counter(struct hw_perf_counter *hwc, int idx) +static void amd_pmu_enable_event(struct hw_perf_event *hwc, int idx) { - struct cpu_hw_counters *cpuc = &__get_cpu_var(cpu_hw_counters); + struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); if (cpuc->enabled) - x86_pmu_enable_counter(hwc, idx); + x86_pmu_enable_event(hwc, idx); } static int -fixed_mode_idx(struct perf_counter *counter, struct hw_perf_counter *hwc) +fixed_mode_idx(struct perf_event *event, struct hw_perf_event *hwc) { - unsigned int event; + unsigned int hw_event; - event = hwc->config & ARCH_PERFMON_EVENT_MASK; + hw_event = hwc->config & ARCH_PERFMON_EVENT_MASK; - if (unlikely((event == + if (unlikely((hw_event == x86_pmu.event_map(PERF_COUNT_HW_BRANCH_INSTRUCTIONS)) && (hwc->sample_period == 1))) return X86_PMC_IDX_FIXED_BTS; - if (!x86_pmu.num_counters_fixed) + if (!x86_pmu.num_events_fixed) return -1; - if (unlikely(event == x86_pmu.event_map(PERF_COUNT_HW_INSTRUCTIONS))) + if (unlikely(hw_event == x86_pmu.event_map(PERF_COUNT_HW_INSTRUCTIONS))) return X86_PMC_IDX_FIXED_INSTRUCTIONS; - if (unlikely(event == x86_pmu.event_map(PERF_COUNT_HW_CPU_CYCLES))) + if (unlikely(hw_event == x86_pmu.event_map(PERF_COUNT_HW_CPU_CYCLES))) return X86_PMC_IDX_FIXED_CPU_CYCLES; - if (unlikely(event == x86_pmu.event_map(PERF_COUNT_HW_BUS_CYCLES))) + if (unlikely(hw_event == x86_pmu.event_map(PERF_COUNT_HW_BUS_CYCLES))) return X86_PMC_IDX_FIXED_BUS_CYCLES; return -1; } /* - * Find a PMC slot for the freshly enabled / scheduled in counter: + * Find a PMC slot for the freshly enabled / scheduled in event: */ -static int x86_pmu_enable(struct perf_counter *counter) +static int x86_pmu_enable(struct perf_event *event) { - struct cpu_hw_counters *cpuc = &__get_cpu_var(cpu_hw_counters); - struct hw_perf_counter *hwc = &counter->hw; + struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); + struct hw_perf_event *hwc = &event->hw; int idx; - idx = fixed_mode_idx(counter, hwc); + idx = fixed_mode_idx(event, hwc); if (idx == X86_PMC_IDX_FIXED_BTS) { /* BTS is already occupied. */ if (test_and_set_bit(idx, cpuc->used_mask)) return -EAGAIN; hwc->config_base = 0; - hwc->counter_base = 0; + hwc->event_base = 0; hwc->idx = idx; } else if (idx >= 0) { /* - * Try to get the fixed counter, if that is already taken - * then try to get a generic counter: + * Try to get the fixed event, if that is already taken + * then try to get a generic event: */ if (test_and_set_bit(idx, cpuc->used_mask)) goto try_generic; hwc->config_base = MSR_ARCH_PERFMON_FIXED_CTR_CTRL; /* - * We set it so that counter_base + idx in wrmsr/rdmsr maps to + * We set it so that event_base + idx in wrmsr/rdmsr maps to * MSR_ARCH_PERFMON_FIXED_CTR0 ... CTR2: */ - hwc->counter_base = + hwc->event_base = MSR_ARCH_PERFMON_FIXED_CTR0 - X86_PMC_IDX_FIXED; hwc->idx = idx; } else { idx = hwc->idx; - /* Try to get the previous generic counter again */ + /* Try to get the previous generic event again */ if (test_and_set_bit(idx, cpuc->used_mask)) { try_generic: idx = find_first_zero_bit(cpuc->used_mask, - x86_pmu.num_counters); - if (idx == x86_pmu.num_counters) + x86_pmu.num_events); + if (idx == x86_pmu.num_events) return -EAGAIN; set_bit(idx, cpuc->used_mask); hwc->idx = idx; } hwc->config_base = x86_pmu.eventsel; - hwc->counter_base = x86_pmu.perfctr; + hwc->event_base = x86_pmu.perfctr; } - perf_counters_lapic_init(); + perf_events_lapic_init(); x86_pmu.disable(hwc, idx); - cpuc->counters[idx] = counter; + cpuc->events[idx] = event; set_bit(idx, cpuc->active_mask); - x86_perf_counter_set_period(counter, hwc, idx); + x86_perf_event_set_period(event, hwc, idx); x86_pmu.enable(hwc, idx); - perf_counter_update_userpage(counter); + perf_event_update_userpage(event); return 0; } -static void x86_pmu_unthrottle(struct perf_counter *counter) +static void x86_pmu_unthrottle(struct perf_event *event) { - struct cpu_hw_counters *cpuc = &__get_cpu_var(cpu_hw_counters); - struct hw_perf_counter *hwc = &counter->hw; + struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); + struct hw_perf_event *hwc = &event->hw; if (WARN_ON_ONCE(hwc->idx >= X86_PMC_IDX_MAX || - cpuc->counters[hwc->idx] != counter)) + cpuc->events[hwc->idx] != event)) return; x86_pmu.enable(hwc, hwc->idx); } -void perf_counter_print_debug(void) +void perf_event_print_debug(void) { u64 ctrl, status, overflow, pmc_ctrl, pmc_count, prev_left, fixed; - struct cpu_hw_counters *cpuc; + struct cpu_hw_events *cpuc; unsigned long flags; int cpu, idx; - if (!x86_pmu.num_counters) + if (!x86_pmu.num_events) return; local_irq_save(flags); cpu = smp_processor_id(); - cpuc = &per_cpu(cpu_hw_counters, cpu); + cpuc = &per_cpu(cpu_hw_events, cpu); if (x86_pmu.version >= 2) { rdmsrl(MSR_CORE_PERF_GLOBAL_CTRL, ctrl); @@ -1466,7 +1466,7 @@ void perf_counter_print_debug(void) } pr_info("CPU#%d: used: %016llx\n", cpu, *(u64 *)cpuc->used_mask); - for (idx = 0; idx < x86_pmu.num_counters; idx++) { + for (idx = 0; idx < x86_pmu.num_events; idx++) { rdmsrl(x86_pmu.eventsel + idx, pmc_ctrl); rdmsrl(x86_pmu.perfctr + idx, pmc_count); @@ -1479,7 +1479,7 @@ void perf_counter_print_debug(void) pr_info("CPU#%d: gen-PMC%d left: %016llx\n", cpu, idx, prev_left); } - for (idx = 0; idx < x86_pmu.num_counters_fixed; idx++) { + for (idx = 0; idx < x86_pmu.num_events_fixed; idx++) { rdmsrl(MSR_ARCH_PERFMON_FIXED_CTR0 + idx, pmc_count); pr_info("CPU#%d: fixed-PMC%d count: %016llx\n", @@ -1488,7 +1488,7 @@ void perf_counter_print_debug(void) local_irq_restore(flags); } -static void intel_pmu_drain_bts_buffer(struct cpu_hw_counters *cpuc) +static void intel_pmu_drain_bts_buffer(struct cpu_hw_events *cpuc) { struct debug_store *ds = cpuc->ds; struct bts_record { @@ -1496,14 +1496,14 @@ static void intel_pmu_drain_bts_buffer(struct cpu_hw_counters *cpuc) u64 to; u64 flags; }; - struct perf_counter *counter = cpuc->counters[X86_PMC_IDX_FIXED_BTS]; + struct perf_event *event = cpuc->events[X86_PMC_IDX_FIXED_BTS]; struct bts_record *at, *top; struct perf_output_handle handle; struct perf_event_header header; struct perf_sample_data data; struct pt_regs regs; - if (!counter) + if (!event) return; if (!ds) @@ -1518,7 +1518,7 @@ static void intel_pmu_drain_bts_buffer(struct cpu_hw_counters *cpuc) ds->bts_index = ds->bts_buffer_base; - data.period = counter->hw.last_period; + data.period = event->hw.last_period; data.addr = 0; regs.ip = 0; @@ -1527,9 +1527,9 @@ static void intel_pmu_drain_bts_buffer(struct cpu_hw_counters *cpuc) * We will overwrite the from and to address before we output * the sample. */ - perf_prepare_sample(&header, &data, counter, ®s); + perf_prepare_sample(&header, &data, event, ®s); - if (perf_output_begin(&handle, counter, + if (perf_output_begin(&handle, event, header.size * (top - at), 1, 1)) return; @@ -1537,20 +1537,20 @@ static void intel_pmu_drain_bts_buffer(struct cpu_hw_counters *cpuc) data.ip = at->from; data.addr = at->to; - perf_output_sample(&handle, &header, &data, counter); + perf_output_sample(&handle, &header, &data, event); } perf_output_end(&handle); /* There's new data available. */ - counter->hw.interrupts++; - counter->pending_kill = POLL_IN; + event->hw.interrupts++; + event->pending_kill = POLL_IN; } -static void x86_pmu_disable(struct perf_counter *counter) +static void x86_pmu_disable(struct perf_event *event) { - struct cpu_hw_counters *cpuc = &__get_cpu_var(cpu_hw_counters); - struct hw_perf_counter *hwc = &counter->hw; + struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); + struct hw_perf_event *hwc = &event->hw; int idx = hwc->idx; /* @@ -1562,63 +1562,63 @@ static void x86_pmu_disable(struct perf_counter *counter) /* * Make sure the cleared pointer becomes visible before we - * (potentially) free the counter: + * (potentially) free the event: */ barrier(); /* - * Drain the remaining delta count out of a counter + * Drain the remaining delta count out of a event * that we are disabling: */ - x86_perf_counter_update(counter, hwc, idx); + x86_perf_event_update(event, hwc, idx); /* Drain the remaining BTS records. */ if (unlikely(idx == X86_PMC_IDX_FIXED_BTS)) intel_pmu_drain_bts_buffer(cpuc); - cpuc->counters[idx] = NULL; + cpuc->events[idx] = NULL; clear_bit(idx, cpuc->used_mask); - perf_counter_update_userpage(counter); + perf_event_update_userpage(event); } /* - * Save and restart an expired counter. Called by NMI contexts, - * so it has to be careful about preempting normal counter ops: + * Save and restart an expired event. Called by NMI contexts, + * so it has to be careful about preempting normal event ops: */ -static int intel_pmu_save_and_restart(struct perf_counter *counter) +static int intel_pmu_save_and_restart(struct perf_event *event) { - struct hw_perf_counter *hwc = &counter->hw; + struct hw_perf_event *hwc = &event->hw; int idx = hwc->idx; int ret; - x86_perf_counter_update(counter, hwc, idx); - ret = x86_perf_counter_set_period(counter, hwc, idx); + x86_perf_event_update(event, hwc, idx); + ret = x86_perf_event_set_period(event, hwc, idx); - if (counter->state == PERF_COUNTER_STATE_ACTIVE) - intel_pmu_enable_counter(hwc, idx); + if (event->state == PERF_EVENT_STATE_ACTIVE) + intel_pmu_enable_event(hwc, idx); return ret; } static void intel_pmu_reset(void) { - struct debug_store *ds = __get_cpu_var(cpu_hw_counters).ds; + struct debug_store *ds = __get_cpu_var(cpu_hw_events).ds; unsigned long flags; int idx; - if (!x86_pmu.num_counters) + if (!x86_pmu.num_events) return; local_irq_save(flags); printk("clearing PMU state on CPU#%d\n", smp_processor_id()); - for (idx = 0; idx < x86_pmu.num_counters; idx++) { + for (idx = 0; idx < x86_pmu.num_events; idx++) { checking_wrmsrl(x86_pmu.eventsel + idx, 0ull); checking_wrmsrl(x86_pmu.perfctr + idx, 0ull); } - for (idx = 0; idx < x86_pmu.num_counters_fixed; idx++) { + for (idx = 0; idx < x86_pmu.num_events_fixed; idx++) { checking_wrmsrl(MSR_ARCH_PERFMON_FIXED_CTR0 + idx, 0ull); } if (ds) @@ -1630,38 +1630,38 @@ static void intel_pmu_reset(void) static int p6_pmu_handle_irq(struct pt_regs *regs) { struct perf_sample_data data; - struct cpu_hw_counters *cpuc; - struct perf_counter *counter; - struct hw_perf_counter *hwc; + struct cpu_hw_events *cpuc; + struct perf_event *event; + struct hw_perf_event *hwc; int idx, handled = 0; u64 val; data.addr = 0; - cpuc = &__get_cpu_var(cpu_hw_counters); + cpuc = &__get_cpu_var(cpu_hw_events); - for (idx = 0; idx < x86_pmu.num_counters; idx++) { + for (idx = 0; idx < x86_pmu.num_events; idx++) { if (!test_bit(idx, cpuc->active_mask)) continue; - counter = cpuc->counters[idx]; - hwc = &counter->hw; + event = cpuc->events[idx]; + hwc = &event->hw; - val = x86_perf_counter_update(counter, hwc, idx); - if (val & (1ULL << (x86_pmu.counter_bits - 1))) + val = x86_perf_event_update(event, hwc, idx); + if (val & (1ULL << (x86_pmu.event_bits - 1))) continue; /* - * counter overflow + * event overflow */ handled = 1; - data.period = counter->hw.last_period; + data.period = event->hw.last_period; - if (!x86_perf_counter_set_period(counter, hwc, idx)) + if (!x86_perf_event_set_period(event, hwc, idx)) continue; - if (perf_counter_overflow(counter, 1, &data, regs)) - p6_pmu_disable_counter(hwc, idx); + if (perf_event_overflow(event, 1, &data, regs)) + p6_pmu_disable_event(hwc, idx); } if (handled) @@ -1677,13 +1677,13 @@ static int p6_pmu_handle_irq(struct pt_regs *regs) static int intel_pmu_handle_irq(struct pt_regs *regs) { struct perf_sample_data data; - struct cpu_hw_counters *cpuc; + struct cpu_hw_events *cpuc; int bit, loops; u64 ack, status; data.addr = 0; - cpuc = &__get_cpu_var(cpu_hw_counters); + cpuc = &__get_cpu_var(cpu_hw_events); perf_disable(); intel_pmu_drain_bts_buffer(cpuc); @@ -1696,8 +1696,8 @@ static int intel_pmu_handle_irq(struct pt_regs *regs) loops = 0; again: if (++loops > 100) { - WARN_ONCE(1, "perfcounters: irq loop stuck!\n"); - perf_counter_print_debug(); + WARN_ONCE(1, "perfevents: irq loop stuck!\n"); + perf_event_print_debug(); intel_pmu_reset(); perf_enable(); return 1; @@ -1706,19 +1706,19 @@ again: inc_irq_stat(apic_perf_irqs); ack = status; for_each_bit(bit, (unsigned long *)&status, X86_PMC_IDX_MAX) { - struct perf_counter *counter = cpuc->counters[bit]; + struct perf_event *event = cpuc->events[bit]; clear_bit(bit, (unsigned long *) &status); if (!test_bit(bit, cpuc->active_mask)) continue; - if (!intel_pmu_save_and_restart(counter)) + if (!intel_pmu_save_and_restart(event)) continue; - data.period = counter->hw.last_period; + data.period = event->hw.last_period; - if (perf_counter_overflow(counter, 1, &data, regs)) - intel_pmu_disable_counter(&counter->hw, bit); + if (perf_event_overflow(event, 1, &data, regs)) + intel_pmu_disable_event(&event->hw, bit); } intel_pmu_ack_status(ack); @@ -1738,38 +1738,38 @@ again: static int amd_pmu_handle_irq(struct pt_regs *regs) { struct perf_sample_data data; - struct cpu_hw_counters *cpuc; - struct perf_counter *counter; - struct hw_perf_counter *hwc; + struct cpu_hw_events *cpuc; + struct perf_event *event; + struct hw_perf_event *hwc; int idx, handled = 0; u64 val; data.addr = 0; - cpuc = &__get_cpu_var(cpu_hw_counters); + cpuc = &__get_cpu_var(cpu_hw_events); - for (idx = 0; idx < x86_pmu.num_counters; idx++) { + for (idx = 0; idx < x86_pmu.num_events; idx++) { if (!test_bit(idx, cpuc->active_mask)) continue; - counter = cpuc->counters[idx]; - hwc = &counter->hw; + event = cpuc->events[idx]; + hwc = &event->hw; - val = x86_perf_counter_update(counter, hwc, idx); - if (val & (1ULL << (x86_pmu.counter_bits - 1))) + val = x86_perf_event_update(event, hwc, idx); + if (val & (1ULL << (x86_pmu.event_bits - 1))) continue; /* - * counter overflow + * event overflow */ handled = 1; - data.period = counter->hw.last_period; + data.period = event->hw.last_period; - if (!x86_perf_counter_set_period(counter, hwc, idx)) + if (!x86_perf_event_set_period(event, hwc, idx)) continue; - if (perf_counter_overflow(counter, 1, &data, regs)) - amd_pmu_disable_counter(hwc, idx); + if (perf_event_overflow(event, 1, &data, regs)) + amd_pmu_disable_event(hwc, idx); } if (handled) @@ -1783,18 +1783,18 @@ void smp_perf_pending_interrupt(struct pt_regs *regs) irq_enter(); ack_APIC_irq(); inc_irq_stat(apic_pending_irqs); - perf_counter_do_pending(); + perf_event_do_pending(); irq_exit(); } -void set_perf_counter_pending(void) +void set_perf_event_pending(void) { #ifdef CONFIG_X86_LOCAL_APIC apic->send_IPI_self(LOCAL_PENDING_VECTOR); #endif } -void perf_counters_lapic_init(void) +void perf_events_lapic_init(void) { #ifdef CONFIG_X86_LOCAL_APIC if (!x86_pmu.apic || !x86_pmu_initialized()) @@ -1808,13 +1808,13 @@ void perf_counters_lapic_init(void) } static int __kprobes -perf_counter_nmi_handler(struct notifier_block *self, +perf_event_nmi_handler(struct notifier_block *self, unsigned long cmd, void *__args) { struct die_args *args = __args; struct pt_regs *regs; - if (!atomic_read(&active_counters)) + if (!atomic_read(&active_events)) return NOTIFY_DONE; switch (cmd) { @@ -1833,7 +1833,7 @@ perf_counter_nmi_handler(struct notifier_block *self, #endif /* * Can't rely on the handled return value to say it was our NMI, two - * counters could trigger 'simultaneously' raising two back-to-back NMIs. + * events could trigger 'simultaneously' raising two back-to-back NMIs. * * If the first NMI handles both, the latter will be empty and daze * the CPU. @@ -1843,8 +1843,8 @@ perf_counter_nmi_handler(struct notifier_block *self, return NOTIFY_STOP; } -static __read_mostly struct notifier_block perf_counter_nmi_notifier = { - .notifier_call = perf_counter_nmi_handler, +static __read_mostly struct notifier_block perf_event_nmi_notifier = { + .notifier_call = perf_event_nmi_handler, .next = NULL, .priority = 1 }; @@ -1854,8 +1854,8 @@ static struct x86_pmu p6_pmu = { .handle_irq = p6_pmu_handle_irq, .disable_all = p6_pmu_disable_all, .enable_all = p6_pmu_enable_all, - .enable = p6_pmu_enable_counter, - .disable = p6_pmu_disable_counter, + .enable = p6_pmu_enable_event, + .disable = p6_pmu_disable_event, .eventsel = MSR_P6_EVNTSEL0, .perfctr = MSR_P6_PERFCTR0, .event_map = p6_pmu_event_map, @@ -1864,16 +1864,16 @@ static struct x86_pmu p6_pmu = { .apic = 1, .max_period = (1ULL << 31) - 1, .version = 0, - .num_counters = 2, + .num_events = 2, /* - * Counters have 40 bits implemented. However they are designed such + * Events have 40 bits implemented. However they are designed such * that bits [32-39] are sign extensions of bit 31. As such the - * effective width of a counter for P6-like PMU is 32 bits only. + * effective width of a event for P6-like PMU is 32 bits only. * * See IA-32 Intel Architecture Software developer manual Vol 3B */ - .counter_bits = 32, - .counter_mask = (1ULL << 32) - 1, + .event_bits = 32, + .event_mask = (1ULL << 32) - 1, }; static struct x86_pmu intel_pmu = { @@ -1881,8 +1881,8 @@ static struct x86_pmu intel_pmu = { .handle_irq = intel_pmu_handle_irq, .disable_all = intel_pmu_disable_all, .enable_all = intel_pmu_enable_all, - .enable = intel_pmu_enable_counter, - .disable = intel_pmu_disable_counter, + .enable = intel_pmu_enable_event, + .disable = intel_pmu_disable_event, .eventsel = MSR_ARCH_PERFMON_EVENTSEL0, .perfctr = MSR_ARCH_PERFMON_PERFCTR0, .event_map = intel_pmu_event_map, @@ -1892,7 +1892,7 @@ static struct x86_pmu intel_pmu = { /* * Intel PMCs cannot be accessed sanely above 32 bit width, * so we install an artificial 1<<31 period regardless of - * the generic counter period: + * the generic event period: */ .max_period = (1ULL << 31) - 1, .enable_bts = intel_pmu_enable_bts, @@ -1904,16 +1904,16 @@ static struct x86_pmu amd_pmu = { .handle_irq = amd_pmu_handle_irq, .disable_all = amd_pmu_disable_all, .enable_all = amd_pmu_enable_all, - .enable = amd_pmu_enable_counter, - .disable = amd_pmu_disable_counter, + .enable = amd_pmu_enable_event, + .disable = amd_pmu_disable_event, .eventsel = MSR_K7_EVNTSEL0, .perfctr = MSR_K7_PERFCTR0, .event_map = amd_pmu_event_map, .raw_event = amd_pmu_raw_event, .max_events = ARRAY_SIZE(amd_perfmon_event_map), - .num_counters = 4, - .counter_bits = 48, - .counter_mask = (1ULL << 48) - 1, + .num_events = 4, + .event_bits = 48, + .event_mask = (1ULL << 48) - 1, .apic = 1, /* use highest bit to detect overflow */ .max_period = (1ULL << 47) - 1, @@ -1970,7 +1970,7 @@ static int intel_pmu_init(void) /* * Check whether the Architectural PerfMon supports - * Branch Misses Retired Event or not. + * Branch Misses Retired hw_event or not. */ cpuid(10, &eax.full, &ebx, &unused, &edx.full); if (eax.split.mask_length <= ARCH_PERFMON_BRANCH_MISSES_RETIRED) @@ -1982,15 +1982,15 @@ static int intel_pmu_init(void) x86_pmu = intel_pmu; x86_pmu.version = version; - x86_pmu.num_counters = eax.split.num_counters; - x86_pmu.counter_bits = eax.split.bit_width; - x86_pmu.counter_mask = (1ULL << eax.split.bit_width) - 1; + x86_pmu.num_events = eax.split.num_events; + x86_pmu.event_bits = eax.split.bit_width; + x86_pmu.event_mask = (1ULL << eax.split.bit_width) - 1; /* - * Quirk: v2 perfmon does not report fixed-purpose counters, so - * assume at least 3 counters: + * Quirk: v2 perfmon does not report fixed-purpose events, so + * assume at least 3 events: */ - x86_pmu.num_counters_fixed = max((int)edx.split.num_counters_fixed, 3); + x86_pmu.num_events_fixed = max((int)edx.split.num_events_fixed, 3); /* * Install the hw-cache-events table: @@ -2037,11 +2037,11 @@ static int amd_pmu_init(void) return 0; } -void __init init_hw_perf_counters(void) +void __init init_hw_perf_events(void) { int err; - pr_info("Performance Counters: "); + pr_info("Performance Events: "); switch (boot_cpu_data.x86_vendor) { case X86_VENDOR_INTEL: @@ -2054,45 +2054,45 @@ void __init init_hw_perf_counters(void) return; } if (err != 0) { - pr_cont("no PMU driver, software counters only.\n"); + pr_cont("no PMU driver, software events only.\n"); return; } pr_cont("%s PMU driver.\n", x86_pmu.name); - if (x86_pmu.num_counters > X86_PMC_MAX_GENERIC) { - WARN(1, KERN_ERR "hw perf counters %d > max(%d), clipping!", - x86_pmu.num_counters, X86_PMC_MAX_GENERIC); - x86_pmu.num_counters = X86_PMC_MAX_GENERIC; + if (x86_pmu.num_events > X86_PMC_MAX_GENERIC) { + WARN(1, KERN_ERR "hw perf events %d > max(%d), clipping!", + x86_pmu.num_events, X86_PMC_MAX_GENERIC); + x86_pmu.num_events = X86_PMC_MAX_GENERIC; } - perf_counter_mask = (1 << x86_pmu.num_counters) - 1; - perf_max_counters = x86_pmu.num_counters; + perf_event_mask = (1 << x86_pmu.num_events) - 1; + perf_max_events = x86_pmu.num_events; - if (x86_pmu.num_counters_fixed > X86_PMC_MAX_FIXED) { - WARN(1, KERN_ERR "hw perf counters fixed %d > max(%d), clipping!", - x86_pmu.num_counters_fixed, X86_PMC_MAX_FIXED); - x86_pmu.num_counters_fixed = X86_PMC_MAX_FIXED; + if (x86_pmu.num_events_fixed > X86_PMC_MAX_FIXED) { + WARN(1, KERN_ERR "hw perf events fixed %d > max(%d), clipping!", + x86_pmu.num_events_fixed, X86_PMC_MAX_FIXED); + x86_pmu.num_events_fixed = X86_PMC_MAX_FIXED; } - perf_counter_mask |= - ((1LL << x86_pmu.num_counters_fixed)-1) << X86_PMC_IDX_FIXED; - x86_pmu.intel_ctrl = perf_counter_mask; + perf_event_mask |= + ((1LL << x86_pmu.num_events_fixed)-1) << X86_PMC_IDX_FIXED; + x86_pmu.intel_ctrl = perf_event_mask; - perf_counters_lapic_init(); - register_die_notifier(&perf_counter_nmi_notifier); + perf_events_lapic_init(); + register_die_notifier(&perf_event_nmi_notifier); - pr_info("... version: %d\n", x86_pmu.version); - pr_info("... bit width: %d\n", x86_pmu.counter_bits); - pr_info("... generic counters: %d\n", x86_pmu.num_counters); - pr_info("... value mask: %016Lx\n", x86_pmu.counter_mask); - pr_info("... max period: %016Lx\n", x86_pmu.max_period); - pr_info("... fixed-purpose counters: %d\n", x86_pmu.num_counters_fixed); - pr_info("... counter mask: %016Lx\n", perf_counter_mask); + pr_info("... version: %d\n", x86_pmu.version); + pr_info("... bit width: %d\n", x86_pmu.event_bits); + pr_info("... generic registers: %d\n", x86_pmu.num_events); + pr_info("... value mask: %016Lx\n", x86_pmu.event_mask); + pr_info("... max period: %016Lx\n", x86_pmu.max_period); + pr_info("... fixed-purpose events: %d\n", x86_pmu.num_events_fixed); + pr_info("... event mask: %016Lx\n", perf_event_mask); } -static inline void x86_pmu_read(struct perf_counter *counter) +static inline void x86_pmu_read(struct perf_event *event) { - x86_perf_counter_update(counter, &counter->hw, counter->hw.idx); + x86_perf_event_update(event, &event->hw, event->hw.idx); } static const struct pmu pmu = { @@ -2102,14 +2102,14 @@ static const struct pmu pmu = { .unthrottle = x86_pmu_unthrottle, }; -const struct pmu *hw_perf_counter_init(struct perf_counter *counter) +const struct pmu *hw_perf_event_init(struct perf_event *event) { int err; - err = __hw_perf_counter_init(counter); + err = __hw_perf_event_init(event); if (err) { - if (counter->destroy) - counter->destroy(counter); + if (event->destroy) + event->destroy(event); return ERR_PTR(err); } @@ -2292,7 +2292,7 @@ struct perf_callchain_entry *perf_callchain(struct pt_regs *regs) return entry; } -void hw_perf_counter_setup_online(int cpu) +void hw_perf_event_setup_online(int cpu) { init_debug_store_on_cpu(cpu); } diff --git a/arch/x86/kernel/cpu/perfctr-watchdog.c b/arch/x86/kernel/cpu/perfctr-watchdog.c index 392bea4..fab786f 100644 --- a/arch/x86/kernel/cpu/perfctr-watchdog.c +++ b/arch/x86/kernel/cpu/perfctr-watchdog.c @@ -20,7 +20,7 @@ #include <linux/kprobes.h> #include <asm/apic.h> -#include <asm/perf_counter.h> +#include <asm/perf_event.h> struct nmi_watchdog_ctlblk { unsigned int cccr_msr; diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S index d59fe32..681c3fd 100644 --- a/arch/x86/kernel/entry_64.S +++ b/arch/x86/kernel/entry_64.S @@ -1021,7 +1021,7 @@ apicinterrupt ERROR_APIC_VECTOR \ apicinterrupt SPURIOUS_APIC_VECTOR \ spurious_interrupt smp_spurious_interrupt -#ifdef CONFIG_PERF_COUNTERS +#ifdef CONFIG_PERF_EVENTS apicinterrupt LOCAL_PENDING_VECTOR \ perf_pending_interrupt smp_perf_pending_interrupt #endif diff --git a/arch/x86/kernel/irqinit.c b/arch/x86/kernel/irqinit.c index 3008831..40f3077 100644 --- a/arch/x86/kernel/irqinit.c +++ b/arch/x86/kernel/irqinit.c @@ -208,7 +208,7 @@ static void __init apic_intr_init(void) alloc_intr_gate(ERROR_APIC_VECTOR, error_interrupt); /* Performance monitoring interrupts: */ -# ifdef CONFIG_PERF_COUNTERS +# ifdef CONFIG_PERF_EVENTS alloc_intr_gate(LOCAL_PENDING_VECTOR, perf_pending_interrupt); # endif diff --git a/arch/x86/kernel/syscall_table_32.S b/arch/x86/kernel/syscall_table_32.S index d51321d..0157cd2 100644 --- a/arch/x86/kernel/syscall_table_32.S +++ b/arch/x86/kernel/syscall_table_32.S @@ -335,4 +335,4 @@ ENTRY(sys_call_table) .long sys_preadv .long sys_pwritev .long sys_rt_tgsigqueueinfo /* 335 */ - .long sys_perf_counter_open + .long sys_perf_event_open diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c index 775a020..82728f2 100644 --- a/arch/x86/mm/fault.c +++ b/arch/x86/mm/fault.c @@ -10,7 +10,7 @@ #include <linux/bootmem.h> /* max_low_pfn */ #include <linux/kprobes.h> /* __kprobes, ... */ #include <linux/mmiotrace.h> /* kmmio_handler, ... */ -#include <linux/perf_counter.h> /* perf_swcounter_event */ +#include <linux/perf_event.h> /* perf_sw_event */ #include <asm/traps.h> /* dotraplinkage, ... */ #include <asm/pgalloc.h> /* pgd_*(), ... */ @@ -1017,7 +1017,7 @@ do_page_fault(struct pt_regs *regs, unsigned long error_code) if (unlikely(error_code & PF_RSVD)) pgtable_bad(regs, error_code, address); - perf_swcounter_event(PERF_COUNT_SW_PAGE_FAULTS, 1, 0, regs, address); + perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, 0, regs, address); /* * If we're in an interrupt, have no user context or are running @@ -1114,11 +1114,11 @@ good_area: if (fault & VM_FAULT_MAJOR) { tsk->maj_flt++; - perf_swcounter_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, 0, + perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, 0, regs, address); } else { tsk->min_flt++; - perf_swcounter_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, 0, + perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, 0, regs, address); } diff --git a/arch/x86/oprofile/op_model_ppro.c b/arch/x86/oprofile/op_model_ppro.c index 4899215..8eb0587 100644 --- a/arch/x86/oprofile/op_model_ppro.c +++ b/arch/x86/oprofile/op_model_ppro.c @@ -234,11 +234,11 @@ static void arch_perfmon_setup_counters(void) if (eax.split.version_id == 0 && current_cpu_data.x86 == 6 && current_cpu_data.x86_model == 15) { eax.split.version_id = 2; - eax.split.num_counters = 2; + eax.split.num_events = 2; eax.split.bit_width = 40; } - num_counters = eax.split.num_counters; + num_counters = eax.split.num_events; op_arch_perfmon_spec.num_counters = num_counters; op_arch_perfmon_spec.num_controls = num_counters; diff --git a/arch/x86/oprofile/op_x86_model.h b/arch/x86/oprofile/op_x86_model.h index b837761..7b8e75d 100644 --- a/arch/x86/oprofile/op_x86_model.h +++ b/arch/x86/oprofile/op_x86_model.h @@ -13,7 +13,7 @@ #define OP_X86_MODEL_H #include <asm/types.h> -#include <asm/perf_counter.h> +#include <asm/perf_event.h> struct op_msr { unsigned long addr; diff --git a/drivers/char/sysrq.c b/drivers/char/sysrq.c index 50eecfe..44203ff 100644 --- a/drivers/char/sysrq.c +++ b/drivers/char/sysrq.c @@ -26,7 +26,7 @@ #include <linux/proc_fs.h> #include <linux/nmi.h> #include <linux/quotaops.h> -#include <linux/perf_counter.h> +#include <linux/perf_event.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/suspend.h> @@ -252,7 +252,7 @@ static void sysrq_handle_showregs(int key, struct tty_struct *tty) struct pt_regs *regs = get_irq_regs(); if (regs) show_regs(regs); - perf_counter_print_debug(); + perf_event_print_debug(); } static struct sysrq_key_op sysrq_showregs_op = { .handler = sysrq_handle_showregs, @@ -33,7 +33,7 @@ #include <linux/string.h> #include <linux/init.h> #include <linux/pagemap.h> -#include <linux/perf_counter.h> +#include <linux/perf_event.h> #include <linux/highmem.h> #include <linux/spinlock.h> #include <linux/key.h> @@ -923,7 +923,7 @@ void set_task_comm(struct task_struct *tsk, char *buf) task_lock(tsk); strlcpy(tsk->comm, buf, sizeof(tsk->comm)); task_unlock(tsk); - perf_counter_comm(tsk); + perf_event_comm(tsk); } int flush_old_exec(struct linux_binprm * bprm) @@ -997,7 +997,7 @@ int flush_old_exec(struct linux_binprm * bprm) * security domain: */ if (!get_dumpable(current->mm)) - perf_counter_exit_task(current); + perf_event_exit_task(current); /* An exec changes our domain. We are no longer part of the thread group */ diff --git a/include/asm-generic/unistd.h b/include/asm-generic/unistd.h index 1125e5a..d76b66a 100644 --- a/include/asm-generic/unistd.h +++ b/include/asm-generic/unistd.h @@ -620,8 +620,8 @@ __SYSCALL(__NR_move_pages, sys_move_pages) #define __NR_rt_tgsigqueueinfo 240 __SYSCALL(__NR_rt_tgsigqueueinfo, sys_rt_tgsigqueueinfo) -#define __NR_perf_counter_open 241 -__SYSCALL(__NR_perf_counter_open, sys_perf_counter_open) +#define __NR_perf_event_open 241 +__SYSCALL(__NR_perf_event_open, sys_perf_event_open) #undef __NR_syscalls #define __NR_syscalls 242 diff --git a/include/linux/init_task.h b/include/linux/init_task.h index 9e7f2e8..21a6f5d 100644 --- a/include/linux/init_task.h +++ b/include/linux/init_task.h @@ -106,13 +106,13 @@ extern struct group_info init_groups; extern struct cred init_cred; -#ifdef CONFIG_PERF_COUNTERS -# define INIT_PERF_COUNTERS(tsk) \ - .perf_counter_mutex = \ - __MUTEX_INITIALIZER(tsk.perf_counter_mutex), \ - .perf_counter_list = LIST_HEAD_INIT(tsk.perf_counter_list), +#ifdef CONFIG_PERF_EVENTS +# define INIT_PERF_EVENTS(tsk) \ + .perf_event_mutex = \ + __MUTEX_INITIALIZER(tsk.perf_event_mutex), \ + .perf_event_list = LIST_HEAD_INIT(tsk.perf_event_list), #else -# define INIT_PERF_COUNTERS(tsk) +# define INIT_PERF_EVENTS(tsk) #endif /* @@ -178,7 +178,7 @@ extern struct cred init_cred; }, \ .dirties = INIT_PROP_LOCAL_SINGLE(dirties), \ INIT_IDS \ - INIT_PERF_COUNTERS(tsk) \ + INIT_PERF_EVENTS(tsk) \ INIT_TRACE_IRQFLAGS \ INIT_LOCKDEP \ INIT_FTRACE_GRAPH \ diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h index 740caad..368bd70 100644 --- a/include/linux/perf_counter.h +++ b/include/linux/perf_counter.h @@ -1,5 +1,9 @@ /* - * Performance counters: + * NOTE: this file will be removed in a future kernel release, it is + * provided as a courtesy copy of user-space code that relies on the + * old (pre-rename) symbols and constants. + * + * Performance events: * * Copyright (C) 2008-2009, Thomas Gleixner <tglx@linutronix.de> * Copyright (C) 2008-2009, Red Hat, Inc., Ingo Molnar @@ -131,19 +135,19 @@ enum perf_counter_sample_format { * as specified by attr.read_format: * * struct read_format { - * { u64 value; - * { u64 time_enabled; } && PERF_FORMAT_ENABLED - * { u64 time_running; } && PERF_FORMAT_RUNNING - * { u64 id; } && PERF_FORMAT_ID - * } && !PERF_FORMAT_GROUP + * { u64 value; + * { u64 time_enabled; } && PERF_FORMAT_ENABLED + * { u64 time_running; } && PERF_FORMAT_RUNNING + * { u64 id; } && PERF_FORMAT_ID + * } && !PERF_FORMAT_GROUP * - * { u64 nr; - * { u64 time_enabled; } && PERF_FORMAT_ENABLED - * { u64 time_running; } && PERF_FORMAT_RUNNING - * { u64 value; - * { u64 id; } && PERF_FORMAT_ID - * } cntr[nr]; - * } && PERF_FORMAT_GROUP + * { u64 nr; + * { u64 time_enabled; } && PERF_FORMAT_ENABLED + * { u64 time_running; } && PERF_FORMAT_RUNNING + * { u64 value; + * { u64 id; } && PERF_FORMAT_ID + * } cntr[nr]; + * } && PERF_FORMAT_GROUP * }; */ enum perf_counter_read_format { @@ -314,9 +318,9 @@ enum perf_event_type { /* * struct { - * struct perf_event_header header; - * u64 id; - * u64 lost; + * struct perf_event_header header; + * u64 id; + * u64 lost; * }; */ PERF_EVENT_LOST = 2, @@ -364,10 +368,10 @@ enum perf_event_type { /* * struct { - * struct perf_event_header header; - * u32 pid, tid; + * struct perf_event_header header; + * u32 pid, tid; * - * struct read_format values; + * struct read_format values; * }; */ PERF_EVENT_READ = 8, @@ -383,23 +387,23 @@ enum perf_event_type { * { u64 id; } && PERF_SAMPLE_ID * { u64 stream_id;} && PERF_SAMPLE_STREAM_ID * { u32 cpu, res; } && PERF_SAMPLE_CPU - * { u64 period; } && PERF_SAMPLE_PERIOD + * { u64 period; } && PERF_SAMPLE_PERIOD * * { struct read_format values; } && PERF_SAMPLE_READ * * { u64 nr, * u64 ips[nr]; } && PERF_SAMPLE_CALLCHAIN * - * # - * # The RAW record below is opaque data wrt the ABI - * # - * # That is, the ABI doesn't make any promises wrt to - * # the stability of its content, it may vary depending - * # on event, hardware, kernel version and phase of - * # the moon. - * # - * # In other words, PERF_SAMPLE_RAW contents are not an ABI. - * # + * # + * # The RAW record below is opaque data wrt the ABI + * # + * # That is, the ABI doesn't make any promises wrt to + * # the stability of its content, it may vary depending + * # on event, hardware, kernel version and phase of + * # the moon. + * # + * # In other words, PERF_SAMPLE_RAW contents are not an ABI. + * # * * { u32 size; * char data[size];}&& PERF_SAMPLE_RAW @@ -422,437 +426,16 @@ enum perf_callchain_context { PERF_CONTEXT_MAX = (__u64)-4095, }; -#define PERF_FLAG_FD_NO_GROUP (1U << 0) -#define PERF_FLAG_FD_OUTPUT (1U << 1) +#define PERF_FLAG_FD_NO_GROUP (1U << 0) +#define PERF_FLAG_FD_OUTPUT (1U << 1) -#ifdef __KERNEL__ /* - * Kernel-internal data types and definitions: - */ - -#ifdef CONFIG_PERF_COUNTERS -# include <asm/perf_counter.h> -#endif - -#include <linux/list.h> -#include <linux/mutex.h> -#include <linux/rculist.h> -#include <linux/rcupdate.h> -#include <linux/spinlock.h> -#include <linux/hrtimer.h> -#include <linux/fs.h> -#include <linux/pid_namespace.h> -#include <asm/atomic.h> - -#define PERF_MAX_STACK_DEPTH 255 - -struct perf_callchain_entry { - __u64 nr; - __u64 ip[PERF_MAX_STACK_DEPTH]; -}; - -struct perf_raw_record { - u32 size; - void *data; -}; - -struct task_struct; - -/** - * struct hw_perf_counter - performance counter hardware details: + * In case some app still references the old symbols: */ -struct hw_perf_counter { -#ifdef CONFIG_PERF_COUNTERS - union { - struct { /* hardware */ - u64 config; - unsigned long config_base; - unsigned long counter_base; - int idx; - }; - union { /* software */ - atomic64_t count; - struct hrtimer hrtimer; - }; - }; - atomic64_t prev_count; - u64 sample_period; - u64 last_period; - atomic64_t period_left; - u64 interrupts; - - u64 freq_count; - u64 freq_interrupts; - u64 freq_stamp; -#endif -}; - -struct perf_counter; - -/** - * struct pmu - generic performance monitoring unit - */ -struct pmu { - int (*enable) (struct perf_counter *counter); - void (*disable) (struct perf_counter *counter); - void (*read) (struct perf_counter *counter); - void (*unthrottle) (struct perf_counter *counter); -}; - -/** - * enum perf_counter_active_state - the states of a counter - */ -enum perf_counter_active_state { - PERF_COUNTER_STATE_ERROR = -2, - PERF_COUNTER_STATE_OFF = -1, - PERF_COUNTER_STATE_INACTIVE = 0, - PERF_COUNTER_STATE_ACTIVE = 1, -}; - -struct file; -struct perf_mmap_data { - struct rcu_head rcu_head; - int nr_pages; /* nr of data pages */ - int writable; /* are we writable */ - int nr_locked; /* nr pages mlocked */ +#define __NR_perf_counter_open __NR_perf_event_open - atomic_t poll; /* POLL_ for wakeups */ - atomic_t events; /* event limit */ +#define PR_TASK_PERF_COUNTERS_DISABLE PR_TASK_PERF_EVENTS_DISABLE +#define PR_TASK_PERF_COUNTERS_ENABLE PR_TASK_PERF_EVENTS_ENABLE - atomic_long_t head; /* write position */ - atomic_long_t done_head; /* completed head */ - - atomic_t lock; /* concurrent writes */ - atomic_t wakeup; /* needs a wakeup */ - atomic_t lost; /* nr records lost */ - - long watermark; /* wakeup watermark */ - - struct perf_counter_mmap_page *user_page; - void *data_pages[0]; -}; - -struct perf_pending_entry { - struct perf_pending_entry *next; - void (*func)(struct perf_pending_entry *); -}; - -/** - * struct perf_counter - performance counter kernel representation: - */ -struct perf_counter { -#ifdef CONFIG_PERF_COUNTERS - struct list_head list_entry; - struct list_head event_entry; - struct list_head sibling_list; - int nr_siblings; - struct perf_counter *group_leader; - struct perf_counter *output; - const struct pmu *pmu; - - enum perf_counter_active_state state; - atomic64_t count; - - /* - * These are the total time in nanoseconds that the counter - * has been enabled (i.e. eligible to run, and the task has - * been scheduled in, if this is a per-task counter) - * and running (scheduled onto the CPU), respectively. - * - * They are computed from tstamp_enabled, tstamp_running and - * tstamp_stopped when the counter is in INACTIVE or ACTIVE state. - */ - u64 total_time_enabled; - u64 total_time_running; - - /* - * These are timestamps used for computing total_time_enabled - * and total_time_running when the counter is in INACTIVE or - * ACTIVE state, measured in nanoseconds from an arbitrary point - * in time. - * tstamp_enabled: the notional time when the counter was enabled - * tstamp_running: the notional time when the counter was scheduled on - * tstamp_stopped: in INACTIVE state, the notional time when the - * counter was scheduled off. - */ - u64 tstamp_enabled; - u64 tstamp_running; - u64 tstamp_stopped; - - struct perf_counter_attr attr; - struct hw_perf_counter hw; - - struct perf_counter_context *ctx; - struct file *filp; - - /* - * These accumulate total time (in nanoseconds) that children - * counters have been enabled and running, respectively. - */ - atomic64_t child_total_time_enabled; - atomic64_t child_total_time_running; - - /* - * Protect attach/detach and child_list: - */ - struct mutex child_mutex; - struct list_head child_list; - struct perf_counter *parent; - - int oncpu; - int cpu; - - struct list_head owner_entry; - struct task_struct *owner; - - /* mmap bits */ - struct mutex mmap_mutex; - atomic_t mmap_count; - struct perf_mmap_data *data; - - /* poll related */ - wait_queue_head_t waitq; - struct fasync_struct *fasync; - - /* delayed work for NMIs and such */ - int pending_wakeup; - int pending_kill; - int pending_disable; - struct perf_pending_entry pending; - - atomic_t event_limit; - - void (*destroy)(struct perf_counter *); - struct rcu_head rcu_head; - - struct pid_namespace *ns; - u64 id; -#endif -}; - -/** - * struct perf_counter_context - counter context structure - * - * Used as a container for task counters and CPU counters as well: - */ -struct perf_counter_context { - /* - * Protect the states of the counters in the list, - * nr_active, and the list: - */ - spinlock_t lock; - /* - * Protect the list of counters. Locking either mutex or lock - * is sufficient to ensure the list doesn't change; to change - * the list you need to lock both the mutex and the spinlock. - */ - struct mutex mutex; - - struct list_head counter_list; - struct list_head event_list; - int nr_counters; - int nr_active; - int is_active; - int nr_stat; - atomic_t refcount; - struct task_struct *task; - - /* - * Context clock, runs when context enabled. - */ - u64 time; - u64 timestamp; - - /* - * These fields let us detect when two contexts have both - * been cloned (inherited) from a common ancestor. - */ - struct perf_counter_context *parent_ctx; - u64 parent_gen; - u64 generation; - int pin_count; - struct rcu_head rcu_head; -}; - -/** - * struct perf_counter_cpu_context - per cpu counter context structure - */ -struct perf_cpu_context { - struct perf_counter_context ctx; - struct perf_counter_context *task_ctx; - int active_oncpu; - int max_pertask; - int exclusive; - - /* - * Recursion avoidance: - * - * task, softirq, irq, nmi context - */ - int recursion[4]; -}; - -struct perf_output_handle { - struct perf_counter *counter; - struct perf_mmap_data *data; - unsigned long head; - unsigned long offset; - int nmi; - int sample; - int locked; - unsigned long flags; -}; - -#ifdef CONFIG_PERF_COUNTERS - -/* - * Set by architecture code: - */ -extern int perf_max_counters; - -extern const struct pmu *hw_perf_counter_init(struct perf_counter *counter); - -extern void perf_counter_task_sched_in(struct task_struct *task, int cpu); -extern void perf_counter_task_sched_out(struct task_struct *task, - struct task_struct *next, int cpu); -extern void perf_counter_task_tick(struct task_struct *task, int cpu); -extern int perf_counter_init_task(struct task_struct *child); -extern void perf_counter_exit_task(struct task_struct *child); -extern void perf_counter_free_task(struct task_struct *task); -extern void set_perf_counter_pending(void); -extern void perf_counter_do_pending(void); -extern void perf_counter_print_debug(void); -extern void __perf_disable(void); -extern bool __perf_enable(void); -extern void perf_disable(void); -extern void perf_enable(void); -extern int perf_counter_task_disable(void); -extern int perf_counter_task_enable(void); -extern int hw_perf_group_sched_in(struct perf_counter *group_leader, - struct perf_cpu_context *cpuctx, - struct perf_counter_context *ctx, int cpu); -extern void perf_counter_update_userpage(struct perf_counter *counter); - -struct perf_sample_data { - u64 type; - - u64 ip; - struct { - u32 pid; - u32 tid; - } tid_entry; - u64 time; - u64 addr; - u64 id; - u64 stream_id; - struct { - u32 cpu; - u32 reserved; - } cpu_entry; - u64 period; - struct perf_callchain_entry *callchain; - struct perf_raw_record *raw; -}; - -extern void perf_output_sample(struct perf_output_handle *handle, - struct perf_event_header *header, - struct perf_sample_data *data, - struct perf_counter *counter); -extern void perf_prepare_sample(struct perf_event_header *header, - struct perf_sample_data *data, - struct perf_counter *counter, - struct pt_regs *regs); - -extern int perf_counter_overflow(struct perf_counter *counter, int nmi, - struct perf_sample_data *data, - struct pt_regs *regs); - -/* - * Return 1 for a software counter, 0 for a hardware counter - */ -static inline int is_software_counter(struct perf_counter *counter) -{ - return (counter->attr.type != PERF_TYPE_RAW) && - (counter->attr.type != PERF_TYPE_HARDWARE) && - (counter->attr.type != PERF_TYPE_HW_CACHE); -} - -extern atomic_t perf_swcounter_enabled[PERF_COUNT_SW_MAX]; - -extern void __perf_swcounter_event(u32, u64, int, struct pt_regs *, u64); - -static inline void -perf_swcounter_event(u32 event, u64 nr, int nmi, struct pt_regs *regs, u64 addr) -{ - if (atomic_read(&perf_swcounter_enabled[event])) - __perf_swcounter_event(event, nr, nmi, regs, addr); -} - -extern void __perf_counter_mmap(struct vm_area_struct *vma); - -static inline void perf_counter_mmap(struct vm_area_struct *vma) -{ - if (vma->vm_flags & VM_EXEC) - __perf_counter_mmap(vma); -} - -extern void perf_counter_comm(struct task_struct *tsk); -extern void perf_counter_fork(struct task_struct *tsk); - -extern struct perf_callchain_entry *perf_callchain(struct pt_regs *regs); - -extern int sysctl_perf_counter_paranoid; -extern int sysctl_perf_counter_mlock; -extern int sysctl_perf_counter_sample_rate; - -extern void perf_counter_init(void); -extern void perf_tpcounter_event(int event_id, u64 addr, u64 count, - void *record, int entry_size); - -#ifndef perf_misc_flags -#define perf_misc_flags(regs) (user_mode(regs) ? PERF_EVENT_MISC_USER : \ - PERF_EVENT_MISC_KERNEL) -#define perf_instruction_pointer(regs) instruction_pointer(regs) -#endif - -extern int perf_output_begin(struct perf_output_handle *handle, - struct perf_counter *counter, unsigned int size, - int nmi, int sample); -extern void perf_output_end(struct perf_output_handle *handle); -extern void perf_output_copy(struct perf_output_handle *handle, - const void *buf, unsigned int len); -#else -static inline void -perf_counter_task_sched_in(struct task_struct *task, int cpu) { } -static inline void -perf_counter_task_sched_out(struct task_struct *task, - struct task_struct *next, int cpu) { } -static inline void -perf_counter_task_tick(struct task_struct *task, int cpu) { } -static inline int perf_counter_init_task(struct task_struct *child) { return 0; } -static inline void perf_counter_exit_task(struct task_struct *child) { } -static inline void perf_counter_free_task(struct task_struct *task) { } -static inline void perf_counter_do_pending(void) { } -static inline void perf_counter_print_debug(void) { } -static inline void perf_disable(void) { } -static inline void perf_enable(void) { } -static inline int perf_counter_task_disable(void) { return -EINVAL; } -static inline int perf_counter_task_enable(void) { return -EINVAL; } - -static inline void -perf_swcounter_event(u32 event, u64 nr, int nmi, - struct pt_regs *regs, u64 addr) { } - -static inline void perf_counter_mmap(struct vm_area_struct *vma) { } -static inline void perf_counter_comm(struct task_struct *tsk) { } -static inline void perf_counter_fork(struct task_struct *tsk) { } -static inline void perf_counter_init(void) { } - -#endif - -#define perf_output_put(handle, x) \ - perf_output_copy((handle), &(x), sizeof(x)) - -#endif /* __KERNEL__ */ #endif /* _LINUX_PERF_COUNTER_H */ diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h new file mode 100644 index 0000000..acefaf7 --- /dev/null +++ b/include/linux/perf_event.h @@ -0,0 +1,858 @@ +/* + * Performance events: + * + * Copyright (C) 2008-2009, Thomas Gleixner <tglx@linutronix.de> + * Copyright (C) 2008-2009, Red Hat, Inc., Ingo Molnar + * Copyright (C) 2008-2009, Red Hat, Inc., Peter Zijlstra + * + * Data type definitions, declarations, prototypes. + * + * Started by: Thomas Gleixner and Ingo Molnar + * + * For licencing details see kernel-base/COPYING + */ +#ifndef _LINUX_PERF_EVENT_H +#define _LINUX_PERF_EVENT_H + +#include <linux/types.h> +#include <linux/ioctl.h> +#include <asm/byteorder.h> + +/* + * User-space ABI bits: + */ + +/* + * attr.type + */ +enum perf_type_id { + PERF_TYPE_HARDWARE = 0, + PERF_TYPE_SOFTWARE = 1, + PERF_TYPE_TRACEPOINT = 2, + PERF_TYPE_HW_CACHE = 3, + PERF_TYPE_RAW = 4, + + PERF_TYPE_MAX, /* non-ABI */ +}; + +/* + * Generalized performance event event_id types, used by the + * attr.event_id parameter of the sys_perf_event_open() + * syscall: + */ +enum perf_hw_id { + /* + * Common hardware events, generalized by the kernel: + */ + PERF_COUNT_HW_CPU_CYCLES = 0, + PERF_COUNT_HW_INSTRUCTIONS = 1, + PERF_COUNT_HW_CACHE_REFERENCES = 2, + PERF_COUNT_HW_CACHE_MISSES = 3, + PERF_COUNT_HW_BRANCH_INSTRUCTIONS = 4, + PERF_COUNT_HW_BRANCH_MISSES = 5, + PERF_COUNT_HW_BUS_CYCLES = 6, + + PERF_COUNT_HW_MAX, /* non-ABI */ +}; + +/* + * Generalized hardware cache events: + * + * { L1-D, L1-I, LLC, ITLB, DTLB, BPU } x + * { read, write, prefetch } x + * { accesses, misses } + */ +enum perf_hw_cache_id { + PERF_COUNT_HW_CACHE_L1D = 0, + PERF_COUNT_HW_CACHE_L1I = 1, + PERF_COUNT_HW_CACHE_LL = 2, + PERF_COUNT_HW_CACHE_DTLB = 3, + PERF_COUNT_HW_CACHE_ITLB = 4, + PERF_COUNT_HW_CACHE_BPU = 5, + + PERF_COUNT_HW_CACHE_MAX, /* non-ABI */ +}; + +enum perf_hw_cache_op_id { + PERF_COUNT_HW_CACHE_OP_READ = 0, + PERF_COUNT_HW_CACHE_OP_WRITE = 1, + PERF_COUNT_HW_CACHE_OP_PREFETCH = 2, + + PERF_COUNT_HW_CACHE_OP_MAX, /* non-ABI */ +}; + +enum perf_hw_cache_op_result_id { + PERF_COUNT_HW_CACHE_RESULT_ACCESS = 0, + PERF_COUNT_HW_CACHE_RESULT_MISS = 1, + + PERF_COUNT_HW_CACHE_RESULT_MAX, /* non-ABI */ +}; + +/* + * Special "software" events provided by the kernel, even if the hardware + * does not support performance events. These events measure various + * physical and sw events of the kernel (and allow the profiling of them as + * well): + */ +enum perf_sw_ids { + PERF_COUNT_SW_CPU_CLOCK = 0, + PERF_COUNT_SW_TASK_CLOCK = 1, + PERF_COUNT_SW_PAGE_FAULTS = 2, + PERF_COUNT_SW_CONTEXT_SWITCHES = 3, + PERF_COUNT_SW_CPU_MIGRATIONS = 4, + PERF_COUNT_SW_PAGE_FAULTS_MIN = 5, + PERF_COUNT_SW_PAGE_FAULTS_MAJ = 6, + + PERF_COUNT_SW_MAX, /* non-ABI */ +}; + +/* + * Bits that can be set in attr.sample_type to request information + * in the overflow packets. + */ +enum perf_event_sample_format { + PERF_SAMPLE_IP = 1U << 0, + PERF_SAMPLE_TID = 1U << 1, + PERF_SAMPLE_TIME = 1U << 2, + PERF_SAMPLE_ADDR = 1U << 3, + PERF_SAMPLE_READ = 1U << 4, + PERF_SAMPLE_CALLCHAIN = 1U << 5, + PERF_SAMPLE_ID = 1U << 6, + PERF_SAMPLE_CPU = 1U << 7, + PERF_SAMPLE_PERIOD = 1U << 8, + PERF_SAMPLE_STREAM_ID = 1U << 9, + PERF_SAMPLE_RAW = 1U << 10, + + PERF_SAMPLE_MAX = 1U << 11, /* non-ABI */ +}; + +/* + * The format of the data returned by read() on a perf event fd, + * as specified by attr.read_format: + * + * struct read_format { + * { u64 value; + * { u64 time_enabled; } && PERF_FORMAT_ENABLED + * { u64 time_running; } && PERF_FORMAT_RUNNING + * { u64 id; } && PERF_FORMAT_ID + * } && !PERF_FORMAT_GROUP + * + * { u64 nr; + * { u64 time_enabled; } && PERF_FORMAT_ENABLED + * { u64 time_running; } && PERF_FORMAT_RUNNING + * { u64 value; + * { u64 id; } && PERF_FORMAT_ID + * } cntr[nr]; + * } && PERF_FORMAT_GROUP + * }; + */ +enum perf_event_read_format { + PERF_FORMAT_TOTAL_TIME_ENABLED = 1U << 0, + PERF_FORMAT_TOTAL_TIME_RUNNING = 1U << 1, + PERF_FORMAT_ID = 1U << 2, + PERF_FORMAT_GROUP = 1U << 3, + + PERF_FORMAT_MAX = 1U << 4, /* non-ABI */ +}; + +#define PERF_ATTR_SIZE_VER0 64 /* sizeof first published struct */ + +/* + * Hardware event_id to monitor via a performance monitoring event: + */ +struct perf_event_attr { + + /* + * Major type: hardware/software/tracepoint/etc. + */ + __u32 type; + + /* + * Size of the attr structure, for fwd/bwd compat. + */ + __u32 size; + + /* + * Type specific configuration information. + */ + __u64 config; + + union { + __u64 sample_period; + __u64 sample_freq; + }; + + __u64 sample_type; + __u64 read_format; + + __u64 disabled : 1, /* off by default */ + inherit : 1, /* children inherit it */ + pinned : 1, /* must always be on PMU */ + exclusive : 1, /* only group on PMU */ + exclude_user : 1, /* don't count user */ + exclude_kernel : 1, /* ditto kernel */ + exclude_hv : 1, /* ditto hypervisor */ + exclude_idle : 1, /* don't count when idle */ + mmap : 1, /* include mmap data */ + comm : 1, /* include comm data */ + freq : 1, /* use freq, not period */ + inherit_stat : 1, /* per task counts */ + enable_on_exec : 1, /* next exec enables */ + task : 1, /* trace fork/exit */ + watermark : 1, /* wakeup_watermark */ + + __reserved_1 : 49; + + union { + __u32 wakeup_events; /* wakeup every n events */ + __u32 wakeup_watermark; /* bytes before wakeup */ + }; + __u32 __reserved_2; + + __u64 __reserved_3; +}; + +/* + * Ioctls that can be done on a perf event fd: + */ +#define PERF_EVENT_IOC_ENABLE _IO ('$', 0) +#define PERF_EVENT_IOC_DISABLE _IO ('$', 1) +#define PERF_EVENT_IOC_REFRESH _IO ('$', 2) +#define PERF_EVENT_IOC_RESET _IO ('$', 3) +#define PERF_EVENT_IOC_PERIOD _IOW('$', 4, u64) +#define PERF_EVENT_IOC_SET_OUTPUT _IO ('$', 5) + +enum perf_event_ioc_flags { + PERF_IOC_FLAG_GROUP = 1U << 0, +}; + +/* + * Structure of the page that can be mapped via mmap + */ +struct perf_event_mmap_page { + __u32 version; /* version number of this structure */ + __u32 compat_version; /* lowest version this is compat with */ + + /* + * Bits needed to read the hw events in user-space. + * + * u32 seq; + * s64 count; + * + * do { + * seq = pc->lock; + * + * barrier() + * if (pc->index) { + * count = pmc_read(pc->index - 1); + * count += pc->offset; + * } else + * goto regular_read; + * + * barrier(); + * } while (pc->lock != seq); + * + * NOTE: for obvious reason this only works on self-monitoring + * processes. + */ + __u32 lock; /* seqlock for synchronization */ + __u32 index; /* hardware event identifier */ + __s64 offset; /* add to hardware event value */ + __u64 time_enabled; /* time event active */ + __u64 time_running; /* time event on cpu */ + + /* + * Hole for extension of the self monitor capabilities + */ + + __u64 __reserved[123]; /* align to 1k */ + + /* + * Control data for the mmap() data buffer. + * + * User-space reading the @data_head value should issue an rmb(), on + * SMP capable platforms, after reading this value -- see + * perf_event_wakeup(). + * + * When the mapping is PROT_WRITE the @data_tail value should be + * written by userspace to reflect the last read data. In this case + * the kernel will not over-write unread data. + */ + __u64 data_head; /* head in the data section */ + __u64 data_tail; /* user-space written tail */ +}; + +#define PERF_RECORD_MISC_CPUMODE_MASK (3 << 0) +#define PERF_RECORD_MISC_CPUMODE_UNKNOWN (0 << 0) +#define PERF_RECORD_MISC_KERNEL (1 << 0) +#define PERF_RECORD_MISC_USER (2 << 0) +#define PERF_RECORD_MISC_HYPERVISOR (3 << 0) + +struct perf_event_header { + __u32 type; + __u16 misc; + __u16 size; +}; + +enum perf_event_type { + + /* + * The MMAP events record the PROT_EXEC mappings so that we can + * correlate userspace IPs to code. They have the following structure: + * + * struct { + * struct perf_event_header header; + * + * u32 pid, tid; + * u64 addr; + * u64 len; + * u64 pgoff; + * char filename[]; + * }; + */ + PERF_RECORD_MMAP = 1, + + /* + * struct { + * struct perf_event_header header; + * u64 id; + * u64 lost; + * }; + */ + PERF_RECORD_LOST = 2, + + /* + * struct { + * struct perf_event_header header; + * + * u32 pid, tid; + * char comm[]; + * }; + */ + PERF_RECORD_COMM = 3, + + /* + * struct { + * struct perf_event_header header; + * u32 pid, ppid; + * u32 tid, ptid; + * u64 time; + * }; + */ + PERF_RECORD_EXIT = 4, + + /* + * struct { + * struct perf_event_header header; + * u64 time; + * u64 id; + * u64 stream_id; + * }; + */ + PERF_RECORD_THROTTLE = 5, + PERF_RECORD_UNTHROTTLE = 6, + + /* + * struct { + * struct perf_event_header header; + * u32 pid, ppid; + * u32 tid, ptid; + * { u64 time; } && PERF_SAMPLE_TIME + * }; + */ + PERF_RECORD_FORK = 7, + + /* + * struct { + * struct perf_event_header header; + * u32 pid, tid; + * + * struct read_format values; + * }; + */ + PERF_RECORD_READ = 8, + + /* + * struct { + * struct perf_event_header header; + * + * { u64 ip; } && PERF_SAMPLE_IP + * { u32 pid, tid; } && PERF_SAMPLE_TID + * { u64 time; } && PERF_SAMPLE_TIME + * { u64 addr; } && PERF_SAMPLE_ADDR + * { u64 id; } && PERF_SAMPLE_ID + * { u64 stream_id;} && PERF_SAMPLE_STREAM_ID + * { u32 cpu, res; } && PERF_SAMPLE_CPU + * { u64 period; } && PERF_SAMPLE_PERIOD + * + * { struct read_format values; } && PERF_SAMPLE_READ + * + * { u64 nr, + * u64 ips[nr]; } && PERF_SAMPLE_CALLCHAIN + * + * # + * # The RAW record below is opaque data wrt the ABI + * # + * # That is, the ABI doesn't make any promises wrt to + * # the stability of its content, it may vary depending + * # on event, hardware, kernel version and phase of + * # the moon. + * # + * # In other words, PERF_SAMPLE_RAW contents are not an ABI. + * # + * + * { u32 size; + * char data[size];}&& PERF_SAMPLE_RAW + * }; + */ + PERF_RECORD_SAMPLE = 9, + + PERF_RECORD_MAX, /* non-ABI */ +}; + +enum perf_callchain_context { + PERF_CONTEXT_HV = (__u64)-32, + PERF_CONTEXT_KERNEL = (__u64)-128, + PERF_CONTEXT_USER = (__u64)-512, + + PERF_CONTEXT_GUEST = (__u64)-2048, + PERF_CONTEXT_GUEST_KERNEL = (__u64)-2176, + PERF_CONTEXT_GUEST_USER = (__u64)-2560, + + PERF_CONTEXT_MAX = (__u64)-4095, +}; + +#define PERF_FLAG_FD_NO_GROUP (1U << 0) +#define PERF_FLAG_FD_OUTPUT (1U << 1) + +#ifdef __KERNEL__ +/* + * Kernel-internal data types and definitions: + */ + +#ifdef CONFIG_PERF_EVENTS +# include <asm/perf_event.h> +#endif + +#include <linux/list.h> +#include <linux/mutex.h> +#include <linux/rculist.h> +#include <linux/rcupdate.h> +#include <linux/spinlock.h> +#include <linux/hrtimer.h> +#include <linux/fs.h> +#include <linux/pid_namespace.h> +#include <asm/atomic.h> + +#define PERF_MAX_STACK_DEPTH 255 + +struct perf_callchain_entry { + __u64 nr; + __u64 ip[PERF_MAX_STACK_DEPTH]; +}; + +struct perf_raw_record { + u32 size; + void *data; +}; + +struct task_struct; + +/** + * struct hw_perf_event - performance event hardware details: + */ +struct hw_perf_event { +#ifdef CONFIG_PERF_EVENTS + union { + struct { /* hardware */ + u64 config; + unsigned long config_base; + unsigned long event_base; + int idx; + }; + union { /* software */ + atomic64_t count; + struct hrtimer hrtimer; + }; + }; + atomic64_t prev_count; + u64 sample_period; + u64 last_period; + atomic64_t period_left; + u64 interrupts; + + u64 freq_count; + u64 freq_interrupts; + u64 freq_stamp; +#endif +}; + +struct perf_event; + +/** + * struct pmu - generic performance monitoring unit + */ +struct pmu { + int (*enable) (struct perf_event *event); + void (*disable) (struct perf_event *event); + void (*read) (struct perf_event *event); + void (*unthrottle) (struct perf_event *event); +}; + +/** + * enum perf_event_active_state - the states of a event + */ +enum perf_event_active_state { + PERF_EVENT_STATE_ERROR = -2, + PERF_EVENT_STATE_OFF = -1, + PERF_EVENT_STATE_INACTIVE = 0, + PERF_EVENT_STATE_ACTIVE = 1, +}; + +struct file; + +struct perf_mmap_data { + struct rcu_head rcu_head; + int nr_pages; /* nr of data pages */ + int writable; /* are we writable */ + int nr_locked; /* nr pages mlocked */ + + atomic_t poll; /* POLL_ for wakeups */ + atomic_t events; /* event_id limit */ + + atomic_long_t head; /* write position */ + atomic_long_t done_head; /* completed head */ + + atomic_t lock; /* concurrent writes */ + atomic_t wakeup; /* needs a wakeup */ + atomic_t lost; /* nr records lost */ + + long watermark; /* wakeup watermark */ + + struct perf_event_mmap_page *user_page; + void *data_pages[0]; +}; + +struct perf_pending_entry { + struct perf_pending_entry *next; + void (*func)(struct perf_pending_entry *); +}; + +/** + * struct perf_event - performance event kernel representation: + */ +struct perf_event { +#ifdef CONFIG_PERF_EVENTS + struct list_head group_entry; + struct list_head event_entry; + struct list_head sibling_list; + int nr_siblings; + struct perf_event *group_leader; + struct perf_event *output; + const struct pmu *pmu; + + enum perf_event_active_state state; + atomic64_t count; + + /* + * These are the total time in nanoseconds that the event + * has been enabled (i.e. eligible to run, and the task has + * been scheduled in, if this is a per-task event) + * and running (scheduled onto the CPU), respectively. + * + * They are computed from tstamp_enabled, tstamp_running and + * tstamp_stopped when the event is in INACTIVE or ACTIVE state. + */ + u64 total_time_enabled; + u64 total_time_running; + + /* + * These are timestamps used for computing total_time_enabled + * and total_time_running when the event is in INACTIVE or + * ACTIVE state, measured in nanoseconds from an arbitrary point + * in time. + * tstamp_enabled: the notional time when the event was enabled + * tstamp_running: the notional time when the event was scheduled on + * tstamp_stopped: in INACTIVE state, the notional time when the + * event was scheduled off. + */ + u64 tstamp_enabled; + u64 tstamp_running; + u64 tstamp_stopped; + + struct perf_event_attr attr; + struct hw_perf_event hw; + + struct perf_event_context *ctx; + struct file *filp; + + /* + * These accumulate total time (in nanoseconds) that children + * events have been enabled and running, respectively. + */ + atomic64_t child_total_time_enabled; + atomic64_t child_total_time_running; + + /* + * Protect attach/detach and child_list: + */ + struct mutex child_mutex; + struct list_head child_list; + struct perf_event *parent; + + int oncpu; + int cpu; + + struct list_head owner_entry; + struct task_struct *owner; + + /* mmap bits */ + struct mutex mmap_mutex; + atomic_t mmap_count; + struct perf_mmap_data *data; + + /* poll related */ + wait_queue_head_t waitq; + struct fasync_struct *fasync; + + /* delayed work for NMIs and such */ + int pending_wakeup; + int pending_kill; + int pending_disable; + struct perf_pending_entry pending; + + atomic_t event_limit; + + void (*destroy)(struct perf_event *); + struct rcu_head rcu_head; + + struct pid_namespace *ns; + u64 id; +#endif +}; + +/** + * struct perf_event_context - event context structure + * + * Used as a container for task events and CPU events as well: + */ +struct perf_event_context { + /* + * Protect the states of the events in the list, + * nr_active, and the list: + */ + spinlock_t lock; + /* + * Protect the list of events. Locking either mutex or lock + * is sufficient to ensure the list doesn't change; to change + * the list you need to lock both the mutex and the spinlock. + */ + struct mutex mutex; + + struct list_head group_list; + struct list_head event_list; + int nr_events; + int nr_active; + int is_active; + int nr_stat; + atomic_t refcount; + struct task_struct *task; + + /* + * Context clock, runs when context enabled. + */ + u64 time; + u64 timestamp; + + /* + * These fields let us detect when two contexts have both + * been cloned (inherited) from a common ancestor. + */ + struct perf_event_context *parent_ctx; + u64 parent_gen; + u64 generation; + int pin_count; + struct rcu_head rcu_head; +}; + +/** + * struct perf_event_cpu_context - per cpu event context structure + */ +struct perf_cpu_context { + struct perf_event_context ctx; + struct perf_event_context *task_ctx; + int active_oncpu; + int max_pertask; + int exclusive; + + /* + * Recursion avoidance: + * + * task, softirq, irq, nmi context + */ + int recursion[4]; +}; + +struct perf_output_handle { + struct perf_event *event; + struct perf_mmap_data *data; + unsigned long head; + unsigned long offset; + int nmi; + int sample; + int locked; + unsigned long flags; +}; + +#ifdef CONFIG_PERF_EVENTS + +/* + * Set by architecture code: + */ +extern int perf_max_events; + +extern const struct pmu *hw_perf_event_init(struct perf_event *event); + +extern void perf_event_task_sched_in(struct task_struct *task, int cpu); +extern void perf_event_task_sched_out(struct task_struct *task, + struct task_struct *next, int cpu); +extern void perf_event_task_tick(struct task_struct *task, int cpu); +extern int perf_event_init_task(struct task_struct *child); +extern void perf_event_exit_task(struct task_struct *child); +extern void perf_event_free_task(struct task_struct *task); +extern void set_perf_event_pending(void); +extern void perf_event_do_pending(void); +extern void perf_event_print_debug(void); +extern void __perf_disable(void); +extern bool __perf_enable(void); +extern void perf_disable(void); +extern void perf_enable(void); +extern int perf_event_task_disable(void); +extern int perf_event_task_enable(void); +extern int hw_perf_group_sched_in(struct perf_event *group_leader, + struct perf_cpu_context *cpuctx, + struct perf_event_context *ctx, int cpu); +extern void perf_event_update_userpage(struct perf_event *event); + +struct perf_sample_data { + u64 type; + + u64 ip; + struct { + u32 pid; + u32 tid; + } tid_entry; + u64 time; + u64 addr; + u64 id; + u64 stream_id; + struct { + u32 cpu; + u32 reserved; + } cpu_entry; + u64 period; + struct perf_callchain_entry *callchain; + struct perf_raw_record *raw; +}; + +extern void perf_output_sample(struct perf_output_handle *handle, + struct perf_event_header *header, + struct perf_sample_data *data, + struct perf_event *event); +extern void perf_prepare_sample(struct perf_event_header *header, + struct perf_sample_data *data, + struct perf_event *event, + struct pt_regs *regs); + +extern int perf_event_overflow(struct perf_event *event, int nmi, + struct perf_sample_data *data, + struct pt_regs *regs); + +/* + * Return 1 for a software event, 0 for a hardware event + */ +static inline int is_software_event(struct perf_event *event) +{ + return (event->attr.type != PERF_TYPE_RAW) && + (event->attr.type != PERF_TYPE_HARDWARE) && + (event->attr.type != PERF_TYPE_HW_CACHE); +} + +extern atomic_t perf_swevent_enabled[PERF_COUNT_SW_MAX]; + +extern void __perf_sw_event(u32, u64, int, struct pt_regs *, u64); + +static inline void +perf_sw_event(u32 event_id, u64 nr, int nmi, struct pt_regs *regs, u64 addr) +{ + if (atomic_read(&perf_swevent_enabled[event_id])) + __perf_sw_event(event_id, nr, nmi, regs, addr); +} + +extern void __perf_event_mmap(struct vm_area_struct *vma); + +static inline void perf_event_mmap(struct vm_area_struct *vma) +{ + if (vma->vm_flags & VM_EXEC) + __perf_event_mmap(vma); +} + +extern void perf_event_comm(struct task_struct *tsk); +extern void perf_event_fork(struct task_struct *tsk); + +extern struct perf_callchain_entry *perf_callchain(struct pt_regs *regs); + +extern int sysctl_perf_event_paranoid; +extern int sysctl_perf_event_mlock; +extern int sysctl_perf_event_sample_rate; + +extern void perf_event_init(void); +extern void perf_tp_event(int event_id, u64 addr, u64 count, + void *record, int entry_size); + +#ifndef perf_misc_flags +#define perf_misc_flags(regs) (user_mode(regs) ? PERF_RECORD_MISC_USER : \ + PERF_RECORD_MISC_KERNEL) +#define perf_instruction_pointer(regs) instruction_pointer(regs) +#endif + +extern int perf_output_begin(struct perf_output_handle *handle, + struct perf_event *event, unsigned int size, + int nmi, int sample); +extern void perf_output_end(struct perf_output_handle *handle); +extern void perf_output_copy(struct perf_output_handle *handle, + const void *buf, unsigned int len); +#else +static inline void +perf_event_task_sched_in(struct task_struct *task, int cpu) { } +static inline void +perf_event_task_sched_out(struct task_struct *task, + struct task_struct *next, int cpu) { } +static inline void +perf_event_task_tick(struct task_struct *task, int cpu) { } +static inline int perf_event_init_task(struct task_struct *child) { return 0; } +static inline void perf_event_exit_task(struct task_struct *child) { } +static inline void perf_event_free_task(struct task_struct *task) { } +static inline void perf_event_do_pending(void) { } +static inline void perf_event_print_debug(void) { } +static inline void perf_disable(void) { } +static inline void perf_enable(void) { } +static inline int perf_event_task_disable(void) { return -EINVAL; } +static inline int perf_event_task_enable(void) { return -EINVAL; } + +static inline void +perf_sw_event(u32 event_id, u64 nr, int nmi, + struct pt_regs *regs, u64 addr) { } + +static inline void perf_event_mmap(struct vm_area_struct *vma) { } +static inline void perf_event_comm(struct task_struct *tsk) { } +static inline void perf_event_fork(struct task_struct *tsk) { } +static inline void perf_event_init(void) { } + +#endif + +#define perf_output_put(handle, x) \ + perf_output_copy((handle), &(x), sizeof(x)) + +#endif /* __KERNEL__ */ +#endif /* _LINUX_PERF_EVENT_H */ diff --git a/include/linux/prctl.h b/include/linux/prctl.h index b00df4c..07bff66 100644 --- a/include/linux/prctl.h +++ b/include/linux/prctl.h @@ -85,7 +85,7 @@ #define PR_SET_TIMERSLACK 29 #define PR_GET_TIMERSLACK 30 -#define PR_TASK_PERF_COUNTERS_DISABLE 31 -#define PR_TASK_PERF_COUNTERS_ENABLE 32 +#define PR_TASK_PERF_EVENTS_DISABLE 31 +#define PR_TASK_PERF_EVENTS_ENABLE 32 #endif /* _LINUX_PRCTL_H */ diff --git a/include/linux/sched.h b/include/linux/sched.h index 115af05..8fe351c 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -100,7 +100,7 @@ struct robust_list_head; struct bio; struct fs_struct; struct bts_context; -struct perf_counter_context; +struct perf_event_context; /* * List of flags we want to share for kernel threads, @@ -701,7 +701,7 @@ struct user_struct { #endif #endif -#ifdef CONFIG_PERF_COUNTERS +#ifdef CONFIG_PERF_EVENTS atomic_long_t locked_vm; #endif }; @@ -1451,10 +1451,10 @@ struct task_struct { struct list_head pi_state_list; struct futex_pi_state *pi_state_cache; #endif -#ifdef CONFIG_PERF_COUNTERS - struct perf_counter_context *perf_counter_ctxp; - struct mutex perf_counter_mutex; - struct list_head perf_counter_list; +#ifdef CONFIG_PERF_EVENTS + struct perf_event_context *perf_event_ctxp; + struct mutex perf_event_mutex; + struct list_head perf_event_list; #endif #ifdef CONFIG_NUMA struct mempolicy *mempolicy; /* Protected by alloc_lock */ diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 7d9803c..8d8285a 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -55,7 +55,7 @@ struct compat_timeval; struct robust_list_head; struct getcpu_cache; struct old_linux_dirent; -struct perf_counter_attr; +struct perf_event_attr; #include <linux/types.h> #include <linux/aio_abi.h> @@ -877,7 +877,7 @@ asmlinkage long sys_ppoll(struct pollfd __user *, unsigned int, int kernel_execve(const char *filename, char *const argv[], char *const envp[]); -asmlinkage long sys_perf_counter_open( - struct perf_counter_attr __user *attr_uptr, +asmlinkage long sys_perf_event_open( + struct perf_event_attr __user *attr_uptr, pid_t pid, int cpu, int group_fd, unsigned long flags); #endif diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h index a0361cb..cc0d966 100644 --- a/include/trace/ftrace.h +++ b/include/trace/ftrace.h @@ -378,7 +378,7 @@ static inline int ftrace_get_offsets_##call( \ #ifdef CONFIG_EVENT_PROFILE /* - * Generate the functions needed for tracepoint perf_counter support. + * Generate the functions needed for tracepoint perf_event support. * * NOTE: The insertion profile callback (ftrace_profile_<call>) is defined later * @@ -644,7 +644,7 @@ __attribute__((section("_ftrace_events"))) event_##call = { \ * { * struct ftrace_data_offsets_<call> __maybe_unused __data_offsets; * struct ftrace_event_call *event_call = &event_<call>; - * extern void perf_tpcounter_event(int, u64, u64, void *, int); + * extern void perf_tp_event(int, u64, u64, void *, int); * struct ftrace_raw_##call *entry; * u64 __addr = 0, __count = 1; * unsigned long irq_flags; @@ -690,7 +690,7 @@ __attribute__((section("_ftrace_events"))) event_##call = { \ * * <assign> <- affect our values * - * perf_tpcounter_event(event_call->id, __addr, __count, entry, + * perf_tp_event(event_call->id, __addr, __count, entry, * __entry_size); <- submit them to perf counter * * } @@ -710,7 +710,7 @@ static void ftrace_profile_##call(proto) \ { \ struct ftrace_data_offsets_##call __maybe_unused __data_offsets;\ struct ftrace_event_call *event_call = &event_##call; \ - extern void perf_tpcounter_event(int, u64, u64, void *, int); \ + extern void perf_tp_event(int, u64, u64, void *, int); \ struct ftrace_raw_##call *entry; \ u64 __addr = 0, __count = 1; \ unsigned long irq_flags; \ @@ -755,7 +755,7 @@ static void ftrace_profile_##call(proto) \ \ { assign; } \ \ - perf_tpcounter_event(event_call->id, __addr, __count, entry, \ + perf_tp_event(event_call->id, __addr, __count, entry, \ __entry_size); \ \ end: \ diff --git a/init/Kconfig b/init/Kconfig index 0121c0e..0aa6579 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -916,31 +916,36 @@ config AIO by some high performance threaded applications. Disabling this option saves about 7k. -config HAVE_PERF_COUNTERS +config HAVE_PERF_EVENTS bool help See tools/perf/design.txt for details. -menu "Performance Counters" +menu "Kernel Performance Events And Counters" -config PERF_COUNTERS - bool "Kernel Performance Counters" - default y if PROFILING - depends on HAVE_PERF_COUNTERS +config PERF_EVENTS + bool "Kernel performance events and counters" + default y if (PROFILING || PERF_COUNTERS) + depends on HAVE_PERF_EVENTS select ANON_INODES help - Enable kernel support for performance counter hardware. + Enable kernel support for various performance events provided + by software and hardware. + + Software events are supported either build-in or via the + use of generic tracepoints. - Performance counters are special hardware registers available - on most modern CPUs. These registers count the number of certain + Most modern CPUs support performance events via performance + counter registers. These registers count the number of certain types of hw events: such as instructions executed, cachemisses suffered, or branches mis-predicted - without slowing down the kernel or applications. These registers can also trigger interrupts when a threshold number of events have passed - and can thus be used to profile the code that runs on that CPU. - The Linux Performance Counter subsystem provides an abstraction of - these hardware capabilities, available via a system call. It + The Linux Performance Event subsystem provides an abstraction of + these software and hardware cevent apabilities, available via a + system call and used by the "perf" utility in tools/perf/. It provides per task and per CPU counters, and it provides event capabilities on top of those. @@ -948,17 +953,29 @@ config PERF_COUNTERS config EVENT_PROFILE bool "Tracepoint profiling sources" - depends on PERF_COUNTERS && EVENT_TRACING + depends on PERF_EVENTS && EVENT_TRACING default y help - Allow the use of tracepoints as software performance counters. + Allow the use of tracepoints as software performance events. - When this is enabled, you can create perf counters based on + When this is enabled, you can create perf events based on tracepoints using PERF_TYPE_TRACEPOINT and the tracepoint ID found in debugfs://tracing/events/*/*/id. (The -e/--events option to the perf tool can parse and interpret symbolic tracepoints, in the subsystem:tracepoint_name format.) +config PERF_COUNTERS + bool "Kernel performance counters (old config option)" + depends on HAVE_PERF_EVENTS + help + This config has been obsoleted by the PERF_EVENTS + config option - please see that one for details. + + It has no effect on the kernel whether you enable + it or not, it is a compatibility placeholder. + + Say N if unsure. + endmenu config VM_EVENT_COUNTERS diff --git a/kernel/Makefile b/kernel/Makefile index 7c9b0a5..187c89b 100644 --- a/kernel/Makefile +++ b/kernel/Makefile @@ -95,7 +95,7 @@ obj-$(CONFIG_X86_DS) += trace/ obj-$(CONFIG_RING_BUFFER) += trace/ obj-$(CONFIG_SMP) += sched_cpupri.o obj-$(CONFIG_SLOW_WORK) += slow-work.o -obj-$(CONFIG_PERF_COUNTERS) += perf_counter.o +obj-$(CONFIG_PERF_EVENTS) += perf_event.o ifneq ($(CONFIG_SCHED_OMIT_FRAME_POINTER),y) # According to Alan Modra <alan@linuxcare.com.au>, the -fno-omit-frame-pointer is diff --git a/kernel/exit.c b/kernel/exit.c index ae5d866..e47ee8a 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -47,7 +47,7 @@ #include <linux/tracehook.h> #include <linux/fs_struct.h> #include <linux/init_task.h> -#include <linux/perf_counter.h> +#include <linux/perf_event.h> #include <trace/events/sched.h> #include <asm/uaccess.h> @@ -154,8 +154,8 @@ static void delayed_put_task_struct(struct rcu_head *rhp) { struct task_struct *tsk = container_of(rhp, struct task_struct, rcu); -#ifdef CONFIG_PERF_COUNTERS - WARN_ON_ONCE(tsk->perf_counter_ctxp); +#ifdef CONFIG_PERF_EVENTS + WARN_ON_ONCE(tsk->perf_event_ctxp); #endif trace_sched_process_free(tsk); put_task_struct(tsk); @@ -981,7 +981,7 @@ NORET_TYPE void do_exit(long code) * Flush inherited counters to the parent - before the parent * gets woken up by child-exit notifications. */ - perf_counter_exit_task(tsk); + perf_event_exit_task(tsk); exit_notify(tsk, group_dead); #ifdef CONFIG_NUMA diff --git a/kernel/fork.c b/kernel/fork.c index bfee931..2cebfb2 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -61,7 +61,7 @@ #include <linux/blkdev.h> #include <linux/fs_struct.h> #include <linux/magic.h> -#include <linux/perf_counter.h> +#include <linux/perf_event.h> #include <asm/pgtable.h> #include <asm/pgalloc.h> @@ -1078,7 +1078,7 @@ static struct task_struct *copy_process(unsigned long clone_flags, /* Perform scheduler related setup. Assign this task to a CPU. */ sched_fork(p, clone_flags); - retval = perf_counter_init_task(p); + retval = perf_event_init_task(p); if (retval) goto bad_fork_cleanup_policy; @@ -1253,7 +1253,7 @@ static struct task_struct *copy_process(unsigned long clone_flags, write_unlock_irq(&tasklist_lock); proc_fork_connector(p); cgroup_post_fork(p); - perf_counter_fork(p); + perf_event_fork(p); return p; bad_fork_free_pid: @@ -1280,7 +1280,7 @@ bad_fork_cleanup_semundo: bad_fork_cleanup_audit: audit_free(p); bad_fork_cleanup_policy: - perf_counter_free_task(p); + perf_event_free_task(p); #ifdef CONFIG_NUMA mpol_put(p->mempolicy); bad_fork_cleanup_cgroup: diff --git a/kernel/perf_counter.c b/kernel/perf_event.c index cc768ab..76ac4db 100644 --- a/kernel/perf_counter.c +++ b/kernel/perf_event.c @@ -1,12 +1,12 @@ /* - * Performance counter core code + * Performance events core code: * * Copyright (C) 2008 Thomas Gleixner <tglx@linutronix.de> * Copyright (C) 2008-2009 Red Hat, Inc., Ingo Molnar * Copyright (C) 2008-2009 Red Hat, Inc., Peter Zijlstra <pzijlstr@redhat.com> * Copyright © 2009 Paul Mackerras, IBM Corp. <paulus@au1.ibm.com> * - * For licensing details see kernel-base/COPYING + * For licensing details see kernel-base/COPYING */ #include <linux/fs.h> @@ -26,66 +26,66 @@ #include <linux/syscalls.h> #include <linux/anon_inodes.h> #include <linux/kernel_stat.h> -#include <linux/perf_counter.h> +#include <linux/perf_event.h> #include <asm/irq_regs.h> /* - * Each CPU has a list of per CPU counters: + * Each CPU has a list of per CPU events: */ DEFINE_PER_CPU(struct perf_cpu_context, perf_cpu_context); -int perf_max_counters __read_mostly = 1; +int perf_max_events __read_mostly = 1; static int perf_reserved_percpu __read_mostly; static int perf_overcommit __read_mostly = 1; -static atomic_t nr_counters __read_mostly; -static atomic_t nr_mmap_counters __read_mostly; -static atomic_t nr_comm_counters __read_mostly; -static atomic_t nr_task_counters __read_mostly; +static atomic_t nr_events __read_mostly; +static atomic_t nr_mmap_events __read_mostly; +static atomic_t nr_comm_events __read_mostly; +static atomic_t nr_task_events __read_mostly; /* - * perf counter paranoia level: + * perf event paranoia level: * -1 - not paranoid at all * 0 - disallow raw tracepoint access for unpriv - * 1 - disallow cpu counters for unpriv + * 1 - disallow cpu events for unpriv * 2 - disallow kernel profiling for unpriv */ -int sysctl_perf_counter_paranoid __read_mostly = 1; +int sysctl_perf_event_paranoid __read_mostly = 1; static inline bool perf_paranoid_tracepoint_raw(void) { - return sysctl_perf_counter_paranoid > -1; + return sysctl_perf_event_paranoid > -1; } static inline bool perf_paranoid_cpu(void) { - return sysctl_perf_counter_paranoid > 0; + return sysctl_perf_event_paranoid > 0; } static inline bool perf_paranoid_kernel(void) { - return sysctl_perf_counter_paranoid > 1; + return sysctl_perf_event_paranoid > 1; } -int sysctl_perf_counter_mlock __read_mostly = 512; /* 'free' kb per user */ +int sysctl_perf_event_mlock __read_mostly = 512; /* 'free' kb per user */ /* - * max perf counter sample rate + * max perf event sample rate */ -int sysctl_perf_counter_sample_rate __read_mostly = 100000; +int sysctl_perf_event_sample_rate __read_mostly = 100000; -static atomic64_t perf_counter_id; +static atomic64_t perf_event_id; /* - * Lock for (sysadmin-configurable) counter reservations: + * Lock for (sysadmin-configurable) event reservations: */ static DEFINE_SPINLOCK(perf_resource_lock); /* * Architecture provided APIs - weak aliases: */ -extern __weak const struct pmu *hw_perf_counter_init(struct perf_counter *counter) +extern __weak const struct pmu *hw_perf_event_init(struct perf_event *event) { return NULL; } @@ -93,18 +93,18 @@ extern __weak const struct pmu *hw_perf_counter_init(struct perf_counter *counte void __weak hw_perf_disable(void) { barrier(); } void __weak hw_perf_enable(void) { barrier(); } -void __weak hw_perf_counter_setup(int cpu) { barrier(); } -void __weak hw_perf_counter_setup_online(int cpu) { barrier(); } +void __weak hw_perf_event_setup(int cpu) { barrier(); } +void __weak hw_perf_event_setup_online(int cpu) { barrier(); } int __weak -hw_perf_group_sched_in(struct perf_counter *group_leader, +hw_perf_group_sched_in(struct perf_event *group_leader, struct perf_cpu_context *cpuctx, - struct perf_counter_context *ctx, int cpu) + struct perf_event_context *ctx, int cpu) { return 0; } -void __weak perf_counter_print_debug(void) { } +void __weak perf_event_print_debug(void) { } static DEFINE_PER_CPU(int, perf_disable_count); @@ -130,20 +130,20 @@ void perf_enable(void) hw_perf_enable(); } -static void get_ctx(struct perf_counter_context *ctx) +static void get_ctx(struct perf_event_context *ctx) { WARN_ON(!atomic_inc_not_zero(&ctx->refcount)); } static void free_ctx(struct rcu_head *head) { - struct perf_counter_context *ctx; + struct perf_event_context *ctx; - ctx = container_of(head, struct perf_counter_context, rcu_head); + ctx = container_of(head, struct perf_event_context, rcu_head); kfree(ctx); } -static void put_ctx(struct perf_counter_context *ctx) +static void put_ctx(struct perf_event_context *ctx) { if (atomic_dec_and_test(&ctx->refcount)) { if (ctx->parent_ctx) @@ -154,7 +154,7 @@ static void put_ctx(struct perf_counter_context *ctx) } } -static void unclone_ctx(struct perf_counter_context *ctx) +static void unclone_ctx(struct perf_event_context *ctx) { if (ctx->parent_ctx) { put_ctx(ctx->parent_ctx); @@ -163,37 +163,37 @@ static void unclone_ctx(struct perf_counter_context *ctx) } /* - * If we inherit counters we want to return the parent counter id + * If we inherit events we want to return the parent event id * to userspace. */ -static u64 primary_counter_id(struct perf_counter *counter) +static u64 primary_event_id(struct perf_event *event) { - u64 id = counter->id; + u64 id = event->id; - if (counter->parent) - id = counter->parent->id; + if (event->parent) + id = event->parent->id; return id; } /* - * Get the perf_counter_context for a task and lock it. + * Get the perf_event_context for a task and lock it. * This has to cope with with the fact that until it is locked, * the context could get moved to another task. */ -static struct perf_counter_context * +static struct perf_event_context * perf_lock_task_context(struct task_struct *task, unsigned long *flags) { - struct perf_counter_context *ctx; + struct perf_event_context *ctx; rcu_read_lock(); retry: - ctx = rcu_dereference(task->perf_counter_ctxp); + ctx = rcu_dereference(task->perf_event_ctxp); if (ctx) { /* * If this context is a clone of another, it might * get swapped for another underneath us by - * perf_counter_task_sched_out, though the + * perf_event_task_sched_out, though the * rcu_read_lock() protects us from any context * getting freed. Lock the context and check if it * got swapped before we could get the lock, and retry @@ -201,7 +201,7 @@ perf_lock_task_context(struct task_struct *task, unsigned long *flags) * can't get swapped on us any more. */ spin_lock_irqsave(&ctx->lock, *flags); - if (ctx != rcu_dereference(task->perf_counter_ctxp)) { + if (ctx != rcu_dereference(task->perf_event_ctxp)) { spin_unlock_irqrestore(&ctx->lock, *flags); goto retry; } @@ -220,9 +220,9 @@ perf_lock_task_context(struct task_struct *task, unsigned long *flags) * can't get swapped to another task. This also increments its * reference count so that the context can't get freed. */ -static struct perf_counter_context *perf_pin_task_context(struct task_struct *task) +static struct perf_event_context *perf_pin_task_context(struct task_struct *task) { - struct perf_counter_context *ctx; + struct perf_event_context *ctx; unsigned long flags; ctx = perf_lock_task_context(task, &flags); @@ -233,7 +233,7 @@ static struct perf_counter_context *perf_pin_task_context(struct task_struct *ta return ctx; } -static void perf_unpin_context(struct perf_counter_context *ctx) +static void perf_unpin_context(struct perf_event_context *ctx) { unsigned long flags; @@ -244,123 +244,122 @@ static void perf_unpin_context(struct perf_counter_context *ctx) } /* - * Add a counter from the lists for its context. + * Add a event from the lists for its context. * Must be called with ctx->mutex and ctx->lock held. */ static void -list_add_counter(struct perf_counter *counter, struct perf_counter_context *ctx) +list_add_event(struct perf_event *event, struct perf_event_context *ctx) { - struct perf_counter *group_leader = counter->group_leader; + struct perf_event *group_leader = event->group_leader; /* - * Depending on whether it is a standalone or sibling counter, - * add it straight to the context's counter list, or to the group + * Depending on whether it is a standalone or sibling event, + * add it straight to the context's event list, or to the group * leader's sibling list: */ - if (group_leader == counter) - list_add_tail(&counter->list_entry, &ctx->counter_list); + if (group_leader == event) + list_add_tail(&event->group_entry, &ctx->group_list); else { - list_add_tail(&counter->list_entry, &group_leader->sibling_list); + list_add_tail(&event->group_entry, &group_leader->sibling_list); group_leader->nr_siblings++; } - list_add_rcu(&counter->event_entry, &ctx->event_list); - ctx->nr_counters++; - if (counter->attr.inherit_stat) + list_add_rcu(&event->event_entry, &ctx->event_list); + ctx->nr_events++; + if (event->attr.inherit_stat) ctx->nr_stat++; } /* - * Remove a counter from the lists for its context. + * Remove a event from the lists for its context. * Must be called with ctx->mutex and ctx->lock held. */ static void -list_del_counter(struct perf_counter *counter, struct perf_counter_context *ctx) +list_del_event(struct perf_event *event, struct perf_event_context *ctx) { - struct perf_counter *sibling, *tmp; + struct perf_event *sibling, *tmp; - if (list_empty(&counter->list_entry)) + if (list_empty(&event->group_entry)) return; - ctx->nr_counters--; - if (counter->attr.inherit_stat) + ctx->nr_events--; + if (event->attr.inherit_stat) ctx->nr_stat--; - list_del_init(&counter->list_entry); - list_del_rcu(&counter->event_entry); + list_del_init(&event->group_entry); + list_del_rcu(&event->event_entry); - if (counter->group_leader != counter) - counter->group_leader->nr_siblings--; + if (event->group_leader != event) + event->group_leader->nr_siblings--; /* - * If this was a group counter with sibling counters then - * upgrade the siblings to singleton counters by adding them + * If this was a group event with sibling events then + * upgrade the siblings to singleton events by adding them * to the context list directly: */ - list_for_each_entry_safe(sibling, tmp, - &counter->sibling_list, list_entry) { + list_for_each_entry_safe(sibling, tmp, &event->sibling_list, group_entry) { - list_move_tail(&sibling->list_entry, &ctx->counter_list); + list_move_tail(&sibling->group_entry, &ctx->group_list); sibling->group_leader = sibling; } } static void -counter_sched_out(struct perf_counter *counter, +event_sched_out(struct perf_event *event, struct perf_cpu_context *cpuctx, - struct perf_counter_context *ctx) + struct perf_event_context *ctx) { - if (counter->state != PERF_COUNTER_STATE_ACTIVE) + if (event->state != PERF_EVENT_STATE_ACTIVE) return; - counter->state = PERF_COUNTER_STATE_INACTIVE; - if (counter->pending_disable) { - counter->pending_disable = 0; - counter->state = PERF_COUNTER_STATE_OFF; + event->state = PERF_EVENT_STATE_INACTIVE; + if (event->pending_disable) { + event->pending_disable = 0; + event->state = PERF_EVENT_STATE_OFF; } - counter->tstamp_stopped = ctx->time; - counter->pmu->disable(counter); - counter->oncpu = -1; + event->tstamp_stopped = ctx->time; + event->pmu->disable(event); + event->oncpu = -1; - if (!is_software_counter(counter)) + if (!is_software_event(event)) cpuctx->active_oncpu--; ctx->nr_active--; - if (counter->attr.exclusive || !cpuctx->active_oncpu) + if (event->attr.exclusive || !cpuctx->active_oncpu) cpuctx->exclusive = 0; } static void -group_sched_out(struct perf_counter *group_counter, +group_sched_out(struct perf_event *group_event, struct perf_cpu_context *cpuctx, - struct perf_counter_context *ctx) + struct perf_event_context *ctx) { - struct perf_counter *counter; + struct perf_event *event; - if (group_counter->state != PERF_COUNTER_STATE_ACTIVE) + if (group_event->state != PERF_EVENT_STATE_ACTIVE) return; - counter_sched_out(group_counter, cpuctx, ctx); + event_sched_out(group_event, cpuctx, ctx); /* * Schedule out siblings (if any): */ - list_for_each_entry(counter, &group_counter->sibling_list, list_entry) - counter_sched_out(counter, cpuctx, ctx); + list_for_each_entry(event, &group_event->sibling_list, group_entry) + event_sched_out(event, cpuctx, ctx); - if (group_counter->attr.exclusive) + if (group_event->attr.exclusive) cpuctx->exclusive = 0; } /* - * Cross CPU call to remove a performance counter + * Cross CPU call to remove a performance event * - * We disable the counter on the hardware level first. After that we + * We disable the event on the hardware level first. After that we * remove it from the context list. */ -static void __perf_counter_remove_from_context(void *info) +static void __perf_event_remove_from_context(void *info) { struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context); - struct perf_counter *counter = info; - struct perf_counter_context *ctx = counter->ctx; + struct perf_event *event = info; + struct perf_event_context *ctx = event->ctx; /* * If this is a task context, we need to check whether it is @@ -373,22 +372,22 @@ static void __perf_counter_remove_from_context(void *info) spin_lock(&ctx->lock); /* * Protect the list operation against NMI by disabling the - * counters on a global level. + * events on a global level. */ perf_disable(); - counter_sched_out(counter, cpuctx, ctx); + event_sched_out(event, cpuctx, ctx); - list_del_counter(counter, ctx); + list_del_event(event, ctx); if (!ctx->task) { /* - * Allow more per task counters with respect to the + * Allow more per task events with respect to the * reservation: */ cpuctx->max_pertask = - min(perf_max_counters - ctx->nr_counters, - perf_max_counters - perf_reserved_percpu); + min(perf_max_events - ctx->nr_events, + perf_max_events - perf_reserved_percpu); } perf_enable(); @@ -397,56 +396,56 @@ static void __perf_counter_remove_from_context(void *info) /* - * Remove the counter from a task's (or a CPU's) list of counters. + * Remove the event from a task's (or a CPU's) list of events. * * Must be called with ctx->mutex held. * - * CPU counters are removed with a smp call. For task counters we only + * CPU events are removed with a smp call. For task events we only * call when the task is on a CPU. * - * If counter->ctx is a cloned context, callers must make sure that - * every task struct that counter->ctx->task could possibly point to + * If event->ctx is a cloned context, callers must make sure that + * every task struct that event->ctx->task could possibly point to * remains valid. This is OK when called from perf_release since * that only calls us on the top-level context, which can't be a clone. - * When called from perf_counter_exit_task, it's OK because the + * When called from perf_event_exit_task, it's OK because the * context has been detached from its task. */ -static void perf_counter_remove_from_context(struct perf_counter *counter) +static void perf_event_remove_from_context(struct perf_event *event) { - struct perf_counter_context *ctx = counter->ctx; + struct perf_event_context *ctx = event->ctx; struct task_struct *task = ctx->task; if (!task) { /* - * Per cpu counters are removed via an smp call and + * Per cpu events are removed via an smp call and * the removal is always sucessful. */ - smp_call_function_single(counter->cpu, - __perf_counter_remove_from_context, - counter, 1); + smp_call_function_single(event->cpu, + __perf_event_remove_from_context, + event, 1); return; } retry: - task_oncpu_function_call(task, __perf_counter_remove_from_context, - counter); + task_oncpu_function_call(task, __perf_event_remove_from_context, + event); spin_lock_irq(&ctx->lock); /* * If the context is active we need to retry the smp call. */ - if (ctx->nr_active && !list_empty(&counter->list_entry)) { + if (ctx->nr_active && !list_empty(&event->group_entry)) { spin_unlock_irq(&ctx->lock); goto retry; } /* * The lock prevents that this context is scheduled in so we - * can remove the counter safely, if the call above did not + * can remove the event safely, if the call above did not * succeed. */ - if (!list_empty(&counter->list_entry)) { - list_del_counter(counter, ctx); + if (!list_empty(&event->group_entry)) { + list_del_event(event, ctx); } spin_unlock_irq(&ctx->lock); } @@ -459,7 +458,7 @@ static inline u64 perf_clock(void) /* * Update the record of the current time in a context. */ -static void update_context_time(struct perf_counter_context *ctx) +static void update_context_time(struct perf_event_context *ctx) { u64 now = perf_clock(); @@ -468,51 +467,51 @@ static void update_context_time(struct perf_counter_context *ctx) } /* - * Update the total_time_enabled and total_time_running fields for a counter. + * Update the total_time_enabled and total_time_running fields for a event. */ -static void update_counter_times(struct perf_counter *counter) +static void update_event_times(struct perf_event *event) { - struct perf_counter_context *ctx = counter->ctx; + struct perf_event_context *ctx = event->ctx; u64 run_end; - if (counter->state < PERF_COUNTER_STATE_INACTIVE || - counter->group_leader->state < PERF_COUNTER_STATE_INACTIVE) + if (event->state < PERF_EVENT_STATE_INACTIVE || + event->group_leader->state < PERF_EVENT_STATE_INACTIVE) return; - counter->total_time_enabled = ctx->time - counter->tstamp_enabled; + event->total_time_enabled = ctx->time - event->tstamp_enabled; - if (counter->state == PERF_COUNTER_STATE_INACTIVE) - run_end = counter->tstamp_stopped; + if (event->state == PERF_EVENT_STATE_INACTIVE) + run_end = event->tstamp_stopped; else run_end = ctx->time; - counter->total_time_running = run_end - counter->tstamp_running; + event->total_time_running = run_end - event->tstamp_running; } /* - * Update total_time_enabled and total_time_running for all counters in a group. + * Update total_time_enabled and total_time_running for all events in a group. */ -static void update_group_times(struct perf_counter *leader) +static void update_group_times(struct perf_event *leader) { - struct perf_counter *counter; + struct perf_event *event; - update_counter_times(leader); - list_for_each_entry(counter, &leader->sibling_list, list_entry) - update_counter_times(counter); + update_event_times(leader); + list_for_each_entry(event, &leader->sibling_list, group_entry) + update_event_times(event); } /* - * Cross CPU call to disable a performance counter + * Cross CPU call to disable a performance event */ -static void __perf_counter_disable(void *info) +static void __perf_event_disable(void *info) { - struct perf_counter *counter = info; + struct perf_event *event = info; struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context); - struct perf_counter_context *ctx = counter->ctx; + struct perf_event_context *ctx = event->ctx; /* - * If this is a per-task counter, need to check whether this - * counter's task is the current task on this cpu. + * If this is a per-task event, need to check whether this + * event's task is the current task on this cpu. */ if (ctx->task && cpuctx->task_ctx != ctx) return; @@ -520,57 +519,57 @@ static void __perf_counter_disable(void *info) spin_lock(&ctx->lock); /* - * If the counter is on, turn it off. + * If the event is on, turn it off. * If it is in error state, leave it in error state. */ - if (counter->state >= PERF_COUNTER_STATE_INACTIVE) { + if (event->state >= PERF_EVENT_STATE_INACTIVE) { update_context_time(ctx); - update_group_times(counter); - if (counter == counter->group_leader) - group_sched_out(counter, cpuctx, ctx); + update_group_times(event); + if (event == event->group_leader) + group_sched_out(event, cpuctx, ctx); else - counter_sched_out(counter, cpuctx, ctx); - counter->state = PERF_COUNTER_STATE_OFF; + event_sched_out(event, cpuctx, ctx); + event->state = PERF_EVENT_STATE_OFF; } spin_unlock(&ctx->lock); } /* - * Disable a counter. + * Disable a event. * - * If counter->ctx is a cloned context, callers must make sure that - * every task struct that counter->ctx->task could possibly point to + * If event->ctx is a cloned context, callers must make sure that + * every task struct that event->ctx->task could possibly point to * remains valid. This condition is satisifed when called through - * perf_counter_for_each_child or perf_counter_for_each because they - * hold the top-level counter's child_mutex, so any descendant that - * goes to exit will block in sync_child_counter. - * When called from perf_pending_counter it's OK because counter->ctx + * perf_event_for_each_child or perf_event_for_each because they + * hold the top-level event's child_mutex, so any descendant that + * goes to exit will block in sync_child_event. + * When called from perf_pending_event it's OK because event->ctx * is the current context on this CPU and preemption is disabled, - * hence we can't get into perf_counter_task_sched_out for this context. + * hence we can't get into perf_event_task_sched_out for this context. */ -static void perf_counter_disable(struct perf_counter *counter) +static void perf_event_disable(struct perf_event *event) { - struct perf_counter_context *ctx = counter->ctx; + struct perf_event_context *ctx = event->ctx; struct task_struct *task = ctx->task; if (!task) { /* - * Disable the counter on the cpu that it's on + * Disable the event on the cpu that it's on */ - smp_call_function_single(counter->cpu, __perf_counter_disable, - counter, 1); + smp_call_function_single(event->cpu, __perf_event_disable, + event, 1); return; } retry: - task_oncpu_function_call(task, __perf_counter_disable, counter); + task_oncpu_function_call(task, __perf_event_disable, event); spin_lock_irq(&ctx->lock); /* - * If the counter is still active, we need to retry the cross-call. + * If the event is still active, we need to retry the cross-call. */ - if (counter->state == PERF_COUNTER_STATE_ACTIVE) { + if (event->state == PERF_EVENT_STATE_ACTIVE) { spin_unlock_irq(&ctx->lock); goto retry; } @@ -579,73 +578,73 @@ static void perf_counter_disable(struct perf_counter *counter) * Since we have the lock this context can't be scheduled * in, so we can change the state safely. */ - if (counter->state == PERF_COUNTER_STATE_INACTIVE) { - update_group_times(counter); - counter->state = PERF_COUNTER_STATE_OFF; + if (event->state == PERF_EVENT_STATE_INACTIVE) { + update_group_times(event); + event->state = PERF_EVENT_STATE_OFF; } spin_unlock_irq(&ctx->lock); } static int -counter_sched_in(struct perf_counter *counter, +event_sched_in(struct perf_event *event, struct perf_cpu_context *cpuctx, - struct perf_counter_context *ctx, + struct perf_event_context *ctx, int cpu) { - if (counter->state <= PERF_COUNTER_STATE_OFF) + if (event->state <= PERF_EVENT_STATE_OFF) return 0; - counter->state = PERF_COUNTER_STATE_ACTIVE; - counter->oncpu = cpu; /* TODO: put 'cpu' into cpuctx->cpu */ + event->state = PERF_EVENT_STATE_ACTIVE; + event->oncpu = cpu; /* TODO: put 'cpu' into cpuctx->cpu */ /* * The new state must be visible before we turn it on in the hardware: */ smp_wmb(); - if (counter->pmu->enable(counter)) { - counter->state = PERF_COUNTER_STATE_INACTIVE; - counter->oncpu = -1; + if (event->pmu->enable(event)) { + event->state = PERF_EVENT_STATE_INACTIVE; + event->oncpu = -1; return -EAGAIN; } - counter->tstamp_running += ctx->time - counter->tstamp_stopped; + event->tstamp_running += ctx->time - event->tstamp_stopped; - if (!is_software_counter(counter)) + if (!is_software_event(event)) cpuctx->active_oncpu++; ctx->nr_active++; - if (counter->attr.exclusive) + if (event->attr.exclusive) cpuctx->exclusive = 1; return 0; } static int -group_sched_in(struct perf_counter *group_counter, +group_sched_in(struct perf_event *group_event, struct perf_cpu_context *cpuctx, - struct perf_counter_context *ctx, + struct perf_event_context *ctx, int cpu) { - struct perf_counter *counter, *partial_group; + struct perf_event *event, *partial_group; int ret; - if (group_counter->state == PERF_COUNTER_STATE_OFF) + if (group_event->state == PERF_EVENT_STATE_OFF) return 0; - ret = hw_perf_group_sched_in(group_counter, cpuctx, ctx, cpu); + ret = hw_perf_group_sched_in(group_event, cpuctx, ctx, cpu); if (ret) return ret < 0 ? ret : 0; - if (counter_sched_in(group_counter, cpuctx, ctx, cpu)) + if (event_sched_in(group_event, cpuctx, ctx, cpu)) return -EAGAIN; /* * Schedule in siblings as one group (if any): */ - list_for_each_entry(counter, &group_counter->sibling_list, list_entry) { - if (counter_sched_in(counter, cpuctx, ctx, cpu)) { - partial_group = counter; + list_for_each_entry(event, &group_event->sibling_list, group_entry) { + if (event_sched_in(event, cpuctx, ctx, cpu)) { + partial_group = event; goto group_error; } } @@ -657,57 +656,57 @@ group_error: * Groups can be scheduled in as one unit only, so undo any * partial group before returning: */ - list_for_each_entry(counter, &group_counter->sibling_list, list_entry) { - if (counter == partial_group) + list_for_each_entry(event, &group_event->sibling_list, group_entry) { + if (event == partial_group) break; - counter_sched_out(counter, cpuctx, ctx); + event_sched_out(event, cpuctx, ctx); } - counter_sched_out(group_counter, cpuctx, ctx); + event_sched_out(group_event, cpuctx, ctx); return -EAGAIN; } /* - * Return 1 for a group consisting entirely of software counters, - * 0 if the group contains any hardware counters. + * Return 1 for a group consisting entirely of software events, + * 0 if the group contains any hardware events. */ -static int is_software_only_group(struct perf_counter *leader) +static int is_software_only_group(struct perf_event *leader) { - struct perf_counter *counter; + struct perf_event *event; - if (!is_software_counter(leader)) + if (!is_software_event(leader)) return 0; - list_for_each_entry(counter, &leader->sibling_list, list_entry) - if (!is_software_counter(counter)) + list_for_each_entry(event, &leader->sibling_list, group_entry) + if (!is_software_event(event)) return 0; return 1; } /* - * Work out whether we can put this counter group on the CPU now. + * Work out whether we can put this event group on the CPU now. */ -static int group_can_go_on(struct perf_counter *counter, +static int group_can_go_on(struct perf_event *event, struct perf_cpu_context *cpuctx, int can_add_hw) { /* - * Groups consisting entirely of software counters can always go on. + * Groups consisting entirely of software events can always go on. */ - if (is_software_only_group(counter)) + if (is_software_only_group(event)) return 1; /* * If an exclusive group is already on, no other hardware - * counters can go on. + * events can go on. */ if (cpuctx->exclusive) return 0; /* * If this group is exclusive and there are already - * counters on the CPU, it can't go on. + * events on the CPU, it can't go on. */ - if (counter->attr.exclusive && cpuctx->active_oncpu) + if (event->attr.exclusive && cpuctx->active_oncpu) return 0; /* * Otherwise, try to add it if all previous groups were able @@ -716,26 +715,26 @@ static int group_can_go_on(struct perf_counter *counter, return can_add_hw; } -static void add_counter_to_ctx(struct perf_counter *counter, - struct perf_counter_context *ctx) +static void add_event_to_ctx(struct perf_event *event, + struct perf_event_context *ctx) { - list_add_counter(counter, ctx); - counter->tstamp_enabled = ctx->time; - counter->tstamp_running = ctx->time; - counter->tstamp_stopped = ctx->time; + list_add_event(event, ctx); + event->tstamp_enabled = ctx->time; + event->tstamp_running = ctx->time; + event->tstamp_stopped = ctx->time; } /* - * Cross CPU call to install and enable a performance counter + * Cross CPU call to install and enable a performance event * * Must be called with ctx->mutex held */ static void __perf_install_in_context(void *info) { struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context); - struct perf_counter *counter = info; - struct perf_counter_context *ctx = counter->ctx; - struct perf_counter *leader = counter->group_leader; + struct perf_event *event = info; + struct perf_event_context *ctx = event->ctx; + struct perf_event *leader = event->group_leader; int cpu = smp_processor_id(); int err; @@ -744,7 +743,7 @@ static void __perf_install_in_context(void *info) * the current task context of this cpu. If not it has been * scheduled out before the smp call arrived. * Or possibly this is the right context but it isn't - * on this cpu because it had no counters. + * on this cpu because it had no events. */ if (ctx->task && cpuctx->task_ctx != ctx) { if (cpuctx->task_ctx || ctx->task != current) @@ -758,41 +757,41 @@ static void __perf_install_in_context(void *info) /* * Protect the list operation against NMI by disabling the - * counters on a global level. NOP for non NMI based counters. + * events on a global level. NOP for non NMI based events. */ perf_disable(); - add_counter_to_ctx(counter, ctx); + add_event_to_ctx(event, ctx); /* - * Don't put the counter on if it is disabled or if + * Don't put the event on if it is disabled or if * it is in a group and the group isn't on. */ - if (counter->state != PERF_COUNTER_STATE_INACTIVE || - (leader != counter && leader->state != PERF_COUNTER_STATE_ACTIVE)) + if (event->state != PERF_EVENT_STATE_INACTIVE || + (leader != event && leader->state != PERF_EVENT_STATE_ACTIVE)) goto unlock; /* - * An exclusive counter can't go on if there are already active - * hardware counters, and no hardware counter can go on if there - * is already an exclusive counter on. + * An exclusive event can't go on if there are already active + * hardware events, and no hardware event can go on if there + * is already an exclusive event on. */ - if (!group_can_go_on(counter, cpuctx, 1)) + if (!group_can_go_on(event, cpuctx, 1)) err = -EEXIST; else - err = counter_sched_in(counter, cpuctx, ctx, cpu); + err = event_sched_in(event, cpuctx, ctx, cpu); if (err) { /* - * This counter couldn't go on. If it is in a group + * This event couldn't go on. If it is in a group * then we have to pull the whole group off. - * If the counter group is pinned then put it in error state. + * If the event group is pinned then put it in error state. */ - if (leader != counter) + if (leader != event) group_sched_out(leader, cpuctx, ctx); if (leader->attr.pinned) { update_group_times(leader); - leader->state = PERF_COUNTER_STATE_ERROR; + leader->state = PERF_EVENT_STATE_ERROR; } } @@ -806,92 +805,92 @@ static void __perf_install_in_context(void *info) } /* - * Attach a performance counter to a context + * Attach a performance event to a context * - * First we add the counter to the list with the hardware enable bit - * in counter->hw_config cleared. + * First we add the event to the list with the hardware enable bit + * in event->hw_config cleared. * - * If the counter is attached to a task which is on a CPU we use a smp + * If the event is attached to a task which is on a CPU we use a smp * call to enable it in the task context. The task might have been * scheduled away, but we check this in the smp call again. * * Must be called with ctx->mutex held. */ static void -perf_install_in_context(struct perf_counter_context *ctx, - struct perf_counter *counter, +perf_install_in_context(struct perf_event_context *ctx, + struct perf_event *event, int cpu) { struct task_struct *task = ctx->task; if (!task) { /* - * Per cpu counters are installed via an smp call and + * Per cpu events are installed via an smp call and * the install is always sucessful. */ smp_call_function_single(cpu, __perf_install_in_context, - counter, 1); + event, 1); return; } retry: task_oncpu_function_call(task, __perf_install_in_context, - counter); + event); spin_lock_irq(&ctx->lock); /* * we need to retry the smp call. */ - if (ctx->is_active && list_empty(&counter->list_entry)) { + if (ctx->is_active && list_empty(&event->group_entry)) { spin_unlock_irq(&ctx->lock); goto retry; } /* * The lock prevents that this context is scheduled in so we - * can add the counter safely, if it the call above did not + * can add the event safely, if it the call above did not * succeed. */ - if (list_empty(&counter->list_entry)) - add_counter_to_ctx(counter, ctx); + if (list_empty(&event->group_entry)) + add_event_to_ctx(event, ctx); spin_unlock_irq(&ctx->lock); } /* - * Put a counter into inactive state and update time fields. + * Put a event into inactive state and update time fields. * Enabling the leader of a group effectively enables all * the group members that aren't explicitly disabled, so we * have to update their ->tstamp_enabled also. * Note: this works for group members as well as group leaders * since the non-leader members' sibling_lists will be empty. */ -static void __perf_counter_mark_enabled(struct perf_counter *counter, - struct perf_counter_context *ctx) +static void __perf_event_mark_enabled(struct perf_event *event, + struct perf_event_context *ctx) { - struct perf_counter *sub; + struct perf_event *sub; - counter->state = PERF_COUNTER_STATE_INACTIVE; - counter->tstamp_enabled = ctx->time - counter->total_time_enabled; - list_for_each_entry(sub, &counter->sibling_list, list_entry) - if (sub->state >= PERF_COUNTER_STATE_INACTIVE) + event->state = PERF_EVENT_STATE_INACTIVE; + event->tstamp_enabled = ctx->time - event->total_time_enabled; + list_for_each_entry(sub, &event->sibling_list, group_entry) + if (sub->state >= PERF_EVENT_STATE_INACTIVE) sub->tstamp_enabled = ctx->time - sub->total_time_enabled; } /* - * Cross CPU call to enable a performance counter + * Cross CPU call to enable a performance event */ -static void __perf_counter_enable(void *info) +static void __perf_event_enable(void *info) { - struct perf_counter *counter = info; + struct perf_event *event = info; struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context); - struct perf_counter_context *ctx = counter->ctx; - struct perf_counter *leader = counter->group_leader; + struct perf_event_context *ctx = event->ctx; + struct perf_event *leader = event->group_leader; int err; /* - * If this is a per-task counter, need to check whether this - * counter's task is the current task on this cpu. + * If this is a per-task event, need to check whether this + * event's task is the current task on this cpu. */ if (ctx->task && cpuctx->task_ctx != ctx) { if (cpuctx->task_ctx || ctx->task != current) @@ -903,40 +902,40 @@ static void __perf_counter_enable(void *info) ctx->is_active = 1; update_context_time(ctx); - if (counter->state >= PERF_COUNTER_STATE_INACTIVE) + if (event->state >= PERF_EVENT_STATE_INACTIVE) goto unlock; - __perf_counter_mark_enabled(counter, ctx); + __perf_event_mark_enabled(event, ctx); /* - * If the counter is in a group and isn't the group leader, + * If the event is in a group and isn't the group leader, * then don't put it on unless the group is on. */ - if (leader != counter && leader->state != PERF_COUNTER_STATE_ACTIVE) + if (leader != event && leader->state != PERF_EVENT_STATE_ACTIVE) goto unlock; - if (!group_can_go_on(counter, cpuctx, 1)) { + if (!group_can_go_on(event, cpuctx, 1)) { err = -EEXIST; } else { perf_disable(); - if (counter == leader) - err = group_sched_in(counter, cpuctx, ctx, + if (event == leader) + err = group_sched_in(event, cpuctx, ctx, smp_processor_id()); else - err = counter_sched_in(counter, cpuctx, ctx, + err = event_sched_in(event, cpuctx, ctx, smp_processor_id()); perf_enable(); } if (err) { /* - * If this counter can't go on and it's part of a + * If this event can't go on and it's part of a * group, then the whole group has to come off. */ - if (leader != counter) + if (leader != event) group_sched_out(leader, cpuctx, ctx); if (leader->attr.pinned) { update_group_times(leader); - leader->state = PERF_COUNTER_STATE_ERROR; + leader->state = PERF_EVENT_STATE_ERROR; } } @@ -945,98 +944,98 @@ static void __perf_counter_enable(void *info) } /* - * Enable a counter. + * Enable a event. * - * If counter->ctx is a cloned context, callers must make sure that - * every task struct that counter->ctx->task could possibly point to + * If event->ctx is a cloned context, callers must make sure that + * every task struct that event->ctx->task could possibly point to * remains valid. This condition is satisfied when called through - * perf_counter_for_each_child or perf_counter_for_each as described - * for perf_counter_disable. + * perf_event_for_each_child or perf_event_for_each as described + * for perf_event_disable. */ -static void perf_counter_enable(struct perf_counter *counter) +static void perf_event_enable(struct perf_event *event) { - struct perf_counter_context *ctx = counter->ctx; + struct perf_event_context *ctx = event->ctx; struct task_struct *task = ctx->task; if (!task) { /* - * Enable the counter on the cpu that it's on + * Enable the event on the cpu that it's on */ - smp_call_function_single(counter->cpu, __perf_counter_enable, - counter, 1); + smp_call_function_single(event->cpu, __perf_event_enable, + event, 1); return; } spin_lock_irq(&ctx->lock); - if (counter->state >= PERF_COUNTER_STATE_INACTIVE) + if (event->state >= PERF_EVENT_STATE_INACTIVE) goto out; /* - * If the counter is in error state, clear that first. - * That way, if we see the counter in error state below, we + * If the event is in error state, clear that first. + * That way, if we see the event in error state below, we * know that it has gone back into error state, as distinct * from the task having been scheduled away before the * cross-call arrived. */ - if (counter->state == PERF_COUNTER_STATE_ERROR) - counter->state = PERF_COUNTER_STATE_OFF; + if (event->state == PERF_EVENT_STATE_ERROR) + event->state = PERF_EVENT_STATE_OFF; retry: spin_unlock_irq(&ctx->lock); - task_oncpu_function_call(task, __perf_counter_enable, counter); + task_oncpu_function_call(task, __perf_event_enable, event); spin_lock_irq(&ctx->lock); /* - * If the context is active and the counter is still off, + * If the context is active and the event is still off, * we need to retry the cross-call. */ - if (ctx->is_active && counter->state == PERF_COUNTER_STATE_OFF) + if (ctx->is_active && event->state == PERF_EVENT_STATE_OFF) goto retry; /* * Since we have the lock this context can't be scheduled * in, so we can change the state safely. */ - if (counter->state == PERF_COUNTER_STATE_OFF) - __perf_counter_mark_enabled(counter, ctx); + if (event->state == PERF_EVENT_STATE_OFF) + __perf_event_mark_enabled(event, ctx); out: spin_unlock_irq(&ctx->lock); } -static int perf_counter_refresh(struct perf_counter *counter, int refresh) +static int perf_event_refresh(struct perf_event *event, int refresh) { /* - * not supported on inherited counters + * not supported on inherited events */ - if (counter->attr.inherit) + if (event->attr.inherit) return -EINVAL; - atomic_add(refresh, &counter->event_limit); - perf_counter_enable(counter); + atomic_add(refresh, &event->event_limit); + perf_event_enable(event); return 0; } -void __perf_counter_sched_out(struct perf_counter_context *ctx, +void __perf_event_sched_out(struct perf_event_context *ctx, struct perf_cpu_context *cpuctx) { - struct perf_counter *counter; + struct perf_event *event; spin_lock(&ctx->lock); ctx->is_active = 0; - if (likely(!ctx->nr_counters)) + if (likely(!ctx->nr_events)) goto out; update_context_time(ctx); perf_disable(); if (ctx->nr_active) { - list_for_each_entry(counter, &ctx->counter_list, list_entry) { - if (counter != counter->group_leader) - counter_sched_out(counter, cpuctx, ctx); + list_for_each_entry(event, &ctx->group_list, group_entry) { + if (event != event->group_leader) + event_sched_out(event, cpuctx, ctx); else - group_sched_out(counter, cpuctx, ctx); + group_sched_out(event, cpuctx, ctx); } } perf_enable(); @@ -1047,46 +1046,46 @@ void __perf_counter_sched_out(struct perf_counter_context *ctx, /* * Test whether two contexts are equivalent, i.e. whether they * have both been cloned from the same version of the same context - * and they both have the same number of enabled counters. - * If the number of enabled counters is the same, then the set - * of enabled counters should be the same, because these are both - * inherited contexts, therefore we can't access individual counters + * and they both have the same number of enabled events. + * If the number of enabled events is the same, then the set + * of enabled events should be the same, because these are both + * inherited contexts, therefore we can't access individual events * in them directly with an fd; we can only enable/disable all - * counters via prctl, or enable/disable all counters in a family + * events via prctl, or enable/disable all events in a family * via ioctl, which will have the same effect on both contexts. */ -static int context_equiv(struct perf_counter_context *ctx1, - struct perf_counter_context *ctx2) +static int context_equiv(struct perf_event_context *ctx1, + struct perf_event_context *ctx2) { return ctx1->parent_ctx && ctx1->parent_ctx == ctx2->parent_ctx && ctx1->parent_gen == ctx2->parent_gen && !ctx1->pin_count && !ctx2->pin_count; } -static void __perf_counter_read(void *counter); +static void __perf_event_read(void *event); -static void __perf_counter_sync_stat(struct perf_counter *counter, - struct perf_counter *next_counter) +static void __perf_event_sync_stat(struct perf_event *event, + struct perf_event *next_event) { u64 value; - if (!counter->attr.inherit_stat) + if (!event->attr.inherit_stat) return; /* - * Update the counter value, we cannot use perf_counter_read() + * Update the event value, we cannot use perf_event_read() * because we're in the middle of a context switch and have IRQs * disabled, which upsets smp_call_function_single(), however - * we know the counter must be on the current CPU, therefore we + * we know the event must be on the current CPU, therefore we * don't need to use it. */ - switch (counter->state) { - case PERF_COUNTER_STATE_ACTIVE: - __perf_counter_read(counter); + switch (event->state) { + case PERF_EVENT_STATE_ACTIVE: + __perf_event_read(event); break; - case PERF_COUNTER_STATE_INACTIVE: - update_counter_times(counter); + case PERF_EVENT_STATE_INACTIVE: + update_event_times(event); break; default: @@ -1094,73 +1093,73 @@ static void __perf_counter_sync_stat(struct perf_counter *counter, } /* - * In order to keep per-task stats reliable we need to flip the counter + * In order to keep per-task stats reliable we need to flip the event * values when we flip the contexts. */ - value = atomic64_read(&next_counter->count); - value = atomic64_xchg(&counter->count, value); - atomic64_set(&next_counter->count, value); + value = atomic64_read(&next_event->count); + value = atomic64_xchg(&event->count, value); + atomic64_set(&next_event->count, value); - swap(counter->total_time_enabled, next_counter->total_time_enabled); - swap(counter->total_time_running, next_counter->total_time_running); + swap(event->total_time_enabled, next_event->total_time_enabled); + swap(event->total_time_running, next_event->total_time_running); /* * Since we swizzled the values, update the user visible data too. */ - perf_counter_update_userpage(counter); - perf_counter_update_userpage(next_counter); + perf_event_update_userpage(event); + perf_event_update_userpage(next_event); } #define list_next_entry(pos, member) \ list_entry(pos->member.next, typeof(*pos), member) -static void perf_counter_sync_stat(struct perf_counter_context *ctx, - struct perf_counter_context *next_ctx) +static void perf_event_sync_stat(struct perf_event_context *ctx, + struct perf_event_context *next_ctx) { - struct perf_counter *counter, *next_counter; + struct perf_event *event, *next_event; if (!ctx->nr_stat) return; - counter = list_first_entry(&ctx->event_list, - struct perf_counter, event_entry); + event = list_first_entry(&ctx->event_list, + struct perf_event, event_entry); - next_counter = list_first_entry(&next_ctx->event_list, - struct perf_counter, event_entry); + next_event = list_first_entry(&next_ctx->event_list, + struct perf_event, event_entry); - while (&counter->event_entry != &ctx->event_list && - &next_counter->event_entry != &next_ctx->event_list) { + while (&event->event_entry != &ctx->event_list && + &next_event->event_entry != &next_ctx->event_list) { - __perf_counter_sync_stat(counter, next_counter); + __perf_event_sync_stat(event, next_event); - counter = list_next_entry(counter, event_entry); - next_counter = list_next_entry(next_counter, event_entry); + event = list_next_entry(event, event_entry); + next_event = list_next_entry(next_event, event_entry); } } /* - * Called from scheduler to remove the counters of the current task, + * Called from scheduler to remove the events of the current task, * with interrupts disabled. * - * We stop each counter and update the counter value in counter->count. + * We stop each event and update the event value in event->count. * * This does not protect us against NMI, but disable() - * sets the disabled bit in the control field of counter _before_ - * accessing the counter control register. If a NMI hits, then it will - * not restart the counter. + * sets the disabled bit in the control field of event _before_ + * accessing the event control register. If a NMI hits, then it will + * not restart the event. */ -void perf_counter_task_sched_out(struct task_struct *task, +void perf_event_task_sched_out(struct task_struct *task, struct task_struct *next, int cpu) { struct perf_cpu_context *cpuctx = &per_cpu(perf_cpu_context, cpu); - struct perf_counter_context *ctx = task->perf_counter_ctxp; - struct perf_counter_context *next_ctx; - struct perf_counter_context *parent; + struct perf_event_context *ctx = task->perf_event_ctxp; + struct perf_event_context *next_ctx; + struct perf_event_context *parent; struct pt_regs *regs; int do_switch = 1; regs = task_pt_regs(task); - perf_swcounter_event(PERF_COUNT_SW_CONTEXT_SWITCHES, 1, 1, regs, 0); + perf_sw_event(PERF_COUNT_SW_CONTEXT_SWITCHES, 1, 1, regs, 0); if (likely(!ctx || !cpuctx->task_ctx)) return; @@ -1169,7 +1168,7 @@ void perf_counter_task_sched_out(struct task_struct *task, rcu_read_lock(); parent = rcu_dereference(ctx->parent_ctx); - next_ctx = next->perf_counter_ctxp; + next_ctx = next->perf_event_ctxp; if (parent && next_ctx && rcu_dereference(next_ctx->parent_ctx) == parent) { /* @@ -1186,15 +1185,15 @@ void perf_counter_task_sched_out(struct task_struct *task, if (context_equiv(ctx, next_ctx)) { /* * XXX do we need a memory barrier of sorts - * wrt to rcu_dereference() of perf_counter_ctxp + * wrt to rcu_dereference() of perf_event_ctxp */ - task->perf_counter_ctxp = next_ctx; - next->perf_counter_ctxp = ctx; + task->perf_event_ctxp = next_ctx; + next->perf_event_ctxp = ctx; ctx->task = next; next_ctx->task = task; do_switch = 0; - perf_counter_sync_stat(ctx, next_ctx); + perf_event_sync_stat(ctx, next_ctx); } spin_unlock(&next_ctx->lock); spin_unlock(&ctx->lock); @@ -1202,7 +1201,7 @@ void perf_counter_task_sched_out(struct task_struct *task, rcu_read_unlock(); if (do_switch) { - __perf_counter_sched_out(ctx, cpuctx); + __perf_event_sched_out(ctx, cpuctx); cpuctx->task_ctx = NULL; } } @@ -1210,7 +1209,7 @@ void perf_counter_task_sched_out(struct task_struct *task, /* * Called with IRQs disabled */ -static void __perf_counter_task_sched_out(struct perf_counter_context *ctx) +static void __perf_event_task_sched_out(struct perf_event_context *ctx) { struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context); @@ -1220,28 +1219,28 @@ static void __perf_counter_task_sched_out(struct perf_counter_context *ctx) if (WARN_ON_ONCE(ctx != cpuctx->task_ctx)) return; - __perf_counter_sched_out(ctx, cpuctx); + __perf_event_sched_out(ctx, cpuctx); cpuctx->task_ctx = NULL; } /* * Called with IRQs disabled */ -static void perf_counter_cpu_sched_out(struct perf_cpu_context *cpuctx) +static void perf_event_cpu_sched_out(struct perf_cpu_context *cpuctx) { - __perf_counter_sched_out(&cpuctx->ctx, cpuctx); + __perf_event_sched_out(&cpuctx->ctx, cpuctx); } static void -__perf_counter_sched_in(struct perf_counter_context *ctx, +__perf_event_sched_in(struct perf_event_context *ctx, struct perf_cpu_context *cpuctx, int cpu) { - struct perf_counter *counter; + struct perf_event *event; int can_add_hw = 1; spin_lock(&ctx->lock); ctx->is_active = 1; - if (likely(!ctx->nr_counters)) + if (likely(!ctx->nr_events)) goto out; ctx->timestamp = perf_clock(); @@ -1252,52 +1251,52 @@ __perf_counter_sched_in(struct perf_counter_context *ctx, * First go through the list and put on any pinned groups * in order to give them the best chance of going on. */ - list_for_each_entry(counter, &ctx->counter_list, list_entry) { - if (counter->state <= PERF_COUNTER_STATE_OFF || - !counter->attr.pinned) + list_for_each_entry(event, &ctx->group_list, group_entry) { + if (event->state <= PERF_EVENT_STATE_OFF || + !event->attr.pinned) continue; - if (counter->cpu != -1 && counter->cpu != cpu) + if (event->cpu != -1 && event->cpu != cpu) continue; - if (counter != counter->group_leader) - counter_sched_in(counter, cpuctx, ctx, cpu); + if (event != event->group_leader) + event_sched_in(event, cpuctx, ctx, cpu); else { - if (group_can_go_on(counter, cpuctx, 1)) - group_sched_in(counter, cpuctx, ctx, cpu); + if (group_can_go_on(event, cpuctx, 1)) + group_sched_in(event, cpuctx, ctx, cpu); } /* * If this pinned group hasn't been scheduled, * put it in error state. */ - if (counter->state == PERF_COUNTER_STATE_INACTIVE) { - update_group_times(counter); - counter->state = PERF_COUNTER_STATE_ERROR; + if (event->state == PERF_EVENT_STATE_INACTIVE) { + update_group_times(event); + event->state = PERF_EVENT_STATE_ERROR; } } - list_for_each_entry(counter, &ctx->counter_list, list_entry) { + list_for_each_entry(event, &ctx->group_list, group_entry) { /* - * Ignore counters in OFF or ERROR state, and - * ignore pinned counters since we did them already. + * Ignore events in OFF or ERROR state, and + * ignore pinned events since we did them already. */ - if (counter->state <= PERF_COUNTER_STATE_OFF || - counter->attr.pinned) + if (event->state <= PERF_EVENT_STATE_OFF || + event->attr.pinned) continue; /* * Listen to the 'cpu' scheduling filter constraint - * of counters: + * of events: */ - if (counter->cpu != -1 && counter->cpu != cpu) + if (event->cpu != -1 && event->cpu != cpu) continue; - if (counter != counter->group_leader) { - if (counter_sched_in(counter, cpuctx, ctx, cpu)) + if (event != event->group_leader) { + if (event_sched_in(event, cpuctx, ctx, cpu)) can_add_hw = 0; } else { - if (group_can_go_on(counter, cpuctx, can_add_hw)) { - if (group_sched_in(counter, cpuctx, ctx, cpu)) + if (group_can_go_on(event, cpuctx, can_add_hw)) { + if (group_sched_in(event, cpuctx, ctx, cpu)) can_add_hw = 0; } } @@ -1308,48 +1307,48 @@ __perf_counter_sched_in(struct perf_counter_context *ctx, } /* - * Called from scheduler to add the counters of the current task + * Called from scheduler to add the events of the current task * with interrupts disabled. * - * We restore the counter value and then enable it. + * We restore the event value and then enable it. * * This does not protect us against NMI, but enable() - * sets the enabled bit in the control field of counter _before_ - * accessing the counter control register. If a NMI hits, then it will - * keep the counter running. + * sets the enabled bit in the control field of event _before_ + * accessing the event control register. If a NMI hits, then it will + * keep the event running. */ -void perf_counter_task_sched_in(struct task_struct *task, int cpu) +void perf_event_task_sched_in(struct task_struct *task, int cpu) { struct perf_cpu_context *cpuctx = &per_cpu(perf_cpu_context, cpu); - struct perf_counter_context *ctx = task->perf_counter_ctxp; + struct perf_event_context *ctx = task->perf_event_ctxp; if (likely(!ctx)) return; if (cpuctx->task_ctx == ctx) return; - __perf_counter_sched_in(ctx, cpuctx, cpu); + __perf_event_sched_in(ctx, cpuctx, cpu); cpuctx->task_ctx = ctx; } -static void perf_counter_cpu_sched_in(struct perf_cpu_context *cpuctx, int cpu) +static void perf_event_cpu_sched_in(struct perf_cpu_context *cpuctx, int cpu) { - struct perf_counter_context *ctx = &cpuctx->ctx; + struct perf_event_context *ctx = &cpuctx->ctx; - __perf_counter_sched_in(ctx, cpuctx, cpu); + __perf_event_sched_in(ctx, cpuctx, cpu); } #define MAX_INTERRUPTS (~0ULL) -static void perf_log_throttle(struct perf_counter *counter, int enable); +static void perf_log_throttle(struct perf_event *event, int enable); -static void perf_adjust_period(struct perf_counter *counter, u64 events) +static void perf_adjust_period(struct perf_event *event, u64 events) { - struct hw_perf_counter *hwc = &counter->hw; + struct hw_perf_event *hwc = &event->hw; u64 period, sample_period; s64 delta; events *= hwc->sample_period; - period = div64_u64(events, counter->attr.sample_freq); + period = div64_u64(events, event->attr.sample_freq); delta = (s64)(period - hwc->sample_period); delta = (delta + 7) / 8; /* low pass filter */ @@ -1362,39 +1361,39 @@ static void perf_adjust_period(struct perf_counter *counter, u64 events) hwc->sample_period = sample_period; } -static void perf_ctx_adjust_freq(struct perf_counter_context *ctx) +static void perf_ctx_adjust_freq(struct perf_event_context *ctx) { - struct perf_counter *counter; - struct hw_perf_counter *hwc; + struct perf_event *event; + struct hw_perf_event *hwc; u64 interrupts, freq; spin_lock(&ctx->lock); - list_for_each_entry(counter, &ctx->counter_list, list_entry) { - if (counter->state != PERF_COUNTER_STATE_ACTIVE) + list_for_each_entry(event, &ctx->group_list, group_entry) { + if (event->state != PERF_EVENT_STATE_ACTIVE) continue; - hwc = &counter->hw; + hwc = &event->hw; interrupts = hwc->interrupts; hwc->interrupts = 0; /* - * unthrottle counters on the tick + * unthrottle events on the tick */ if (interrupts == MAX_INTERRUPTS) { - perf_log_throttle(counter, 1); - counter->pmu->unthrottle(counter); - interrupts = 2*sysctl_perf_counter_sample_rate/HZ; + perf_log_throttle(event, 1); + event->pmu->unthrottle(event); + interrupts = 2*sysctl_perf_event_sample_rate/HZ; } - if (!counter->attr.freq || !counter->attr.sample_freq) + if (!event->attr.freq || !event->attr.sample_freq) continue; /* * if the specified freq < HZ then we need to skip ticks */ - if (counter->attr.sample_freq < HZ) { - freq = counter->attr.sample_freq; + if (event->attr.sample_freq < HZ) { + freq = event->attr.sample_freq; hwc->freq_count += freq; hwc->freq_interrupts += interrupts; @@ -1408,7 +1407,7 @@ static void perf_ctx_adjust_freq(struct perf_counter_context *ctx) } else freq = HZ; - perf_adjust_period(counter, freq * interrupts); + perf_adjust_period(event, freq * interrupts); /* * In order to avoid being stalled by an (accidental) huge @@ -1417,9 +1416,9 @@ static void perf_ctx_adjust_freq(struct perf_counter_context *ctx) */ if (!interrupts) { perf_disable(); - counter->pmu->disable(counter); + event->pmu->disable(event); atomic64_set(&hwc->period_left, 0); - counter->pmu->enable(counter); + event->pmu->enable(event); perf_enable(); } } @@ -1427,22 +1426,22 @@ static void perf_ctx_adjust_freq(struct perf_counter_context *ctx) } /* - * Round-robin a context's counters: + * Round-robin a context's events: */ -static void rotate_ctx(struct perf_counter_context *ctx) +static void rotate_ctx(struct perf_event_context *ctx) { - struct perf_counter *counter; + struct perf_event *event; - if (!ctx->nr_counters) + if (!ctx->nr_events) return; spin_lock(&ctx->lock); /* - * Rotate the first entry last (works just fine for group counters too): + * Rotate the first entry last (works just fine for group events too): */ perf_disable(); - list_for_each_entry(counter, &ctx->counter_list, list_entry) { - list_move_tail(&counter->list_entry, &ctx->counter_list); + list_for_each_entry(event, &ctx->group_list, group_entry) { + list_move_tail(&event->group_entry, &ctx->group_list); break; } perf_enable(); @@ -1450,93 +1449,93 @@ static void rotate_ctx(struct perf_counter_context *ctx) spin_unlock(&ctx->lock); } -void perf_counter_task_tick(struct task_struct *curr, int cpu) +void perf_event_task_tick(struct task_struct *curr, int cpu) { struct perf_cpu_context *cpuctx; - struct perf_counter_context *ctx; + struct perf_event_context *ctx; - if (!atomic_read(&nr_counters)) + if (!atomic_read(&nr_events)) return; cpuctx = &per_cpu(perf_cpu_context, cpu); - ctx = curr->perf_counter_ctxp; + ctx = curr->perf_event_ctxp; perf_ctx_adjust_freq(&cpuctx->ctx); if (ctx) perf_ctx_adjust_freq(ctx); - perf_counter_cpu_sched_out(cpuctx); + perf_event_cpu_sched_out(cpuctx); if (ctx) - __perf_counter_task_sched_out(ctx); + __perf_event_task_sched_out(ctx); rotate_ctx(&cpuctx->ctx); if (ctx) rotate_ctx(ctx); - perf_counter_cpu_sched_in(cpuctx, cpu); + perf_event_cpu_sched_in(cpuctx, cpu); if (ctx) - perf_counter_task_sched_in(curr, cpu); + perf_event_task_sched_in(curr, cpu); } /* - * Enable all of a task's counters that have been marked enable-on-exec. + * Enable all of a task's events that have been marked enable-on-exec. * This expects task == current. */ -static void perf_counter_enable_on_exec(struct task_struct *task) +static void perf_event_enable_on_exec(struct task_struct *task) { - struct perf_counter_context *ctx; - struct perf_counter *counter; + struct perf_event_context *ctx; + struct perf_event *event; unsigned long flags; int enabled = 0; local_irq_save(flags); - ctx = task->perf_counter_ctxp; - if (!ctx || !ctx->nr_counters) + ctx = task->perf_event_ctxp; + if (!ctx || !ctx->nr_events) goto out; - __perf_counter_task_sched_out(ctx); + __perf_event_task_sched_out(ctx); spin_lock(&ctx->lock); - list_for_each_entry(counter, &ctx->counter_list, list_entry) { - if (!counter->attr.enable_on_exec) + list_for_each_entry(event, &ctx->group_list, group_entry) { + if (!event->attr.enable_on_exec) continue; - counter->attr.enable_on_exec = 0; - if (counter->state >= PERF_COUNTER_STATE_INACTIVE) + event->attr.enable_on_exec = 0; + if (event->state >= PERF_EVENT_STATE_INACTIVE) continue; - __perf_counter_mark_enabled(counter, ctx); + __perf_event_mark_enabled(event, ctx); enabled = 1; } /* - * Unclone this context if we enabled any counter. + * Unclone this context if we enabled any event. */ if (enabled) unclone_ctx(ctx); spin_unlock(&ctx->lock); - perf_counter_task_sched_in(task, smp_processor_id()); + perf_event_task_sched_in(task, smp_processor_id()); out: local_irq_restore(flags); } /* - * Cross CPU call to read the hardware counter + * Cross CPU call to read the hardware event */ -static void __perf_counter_read(void *info) +static void __perf_event_read(void *info) { struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context); - struct perf_counter *counter = info; - struct perf_counter_context *ctx = counter->ctx; + struct perf_event *event = info; + struct perf_event_context *ctx = event->ctx; unsigned long flags; /* * If this is a task context, we need to check whether it is * the current task context of this cpu. If not it has been * scheduled out before the smp call arrived. In that case - * counter->count would have been updated to a recent sample - * when the counter was scheduled out. + * event->count would have been updated to a recent sample + * when the event was scheduled out. */ if (ctx->task && cpuctx->task_ctx != ctx) return; @@ -1544,56 +1543,56 @@ static void __perf_counter_read(void *info) local_irq_save(flags); if (ctx->is_active) update_context_time(ctx); - counter->pmu->read(counter); - update_counter_times(counter); + event->pmu->read(event); + update_event_times(event); local_irq_restore(flags); } -static u64 perf_counter_read(struct perf_counter *counter) +static u64 perf_event_read(struct perf_event *event) { /* - * If counter is enabled and currently active on a CPU, update the - * value in the counter structure: + * If event is enabled and currently active on a CPU, update the + * value in the event structure: */ - if (counter->state == PERF_COUNTER_STATE_ACTIVE) { - smp_call_function_single(counter->oncpu, - __perf_counter_read, counter, 1); - } else if (counter->state == PERF_COUNTER_STATE_INACTIVE) { - update_counter_times(counter); + if (event->state == PERF_EVENT_STATE_ACTIVE) { + smp_call_function_single(event->oncpu, + __perf_event_read, event, 1); + } else if (event->state == PERF_EVENT_STATE_INACTIVE) { + update_event_times(event); } - return atomic64_read(&counter->count); + return atomic64_read(&event->count); } /* - * Initialize the perf_counter context in a task_struct: + * Initialize the perf_event context in a task_struct: */ static void -__perf_counter_init_context(struct perf_counter_context *ctx, +__perf_event_init_context(struct perf_event_context *ctx, struct task_struct *task) { memset(ctx, 0, sizeof(*ctx)); spin_lock_init(&ctx->lock); mutex_init(&ctx->mutex); - INIT_LIST_HEAD(&ctx->counter_list); + INIT_LIST_HEAD(&ctx->group_list); INIT_LIST_HEAD(&ctx->event_list); atomic_set(&ctx->refcount, 1); ctx->task = task; } -static struct perf_counter_context *find_get_context(pid_t pid, int cpu) +static struct perf_event_context *find_get_context(pid_t pid, int cpu) { - struct perf_counter_context *ctx; + struct perf_event_context *ctx; struct perf_cpu_context *cpuctx; struct task_struct *task; unsigned long flags; int err; /* - * If cpu is not a wildcard then this is a percpu counter: + * If cpu is not a wildcard then this is a percpu event: */ if (cpu != -1) { - /* Must be root to operate on a CPU counter: */ + /* Must be root to operate on a CPU event: */ if (perf_paranoid_cpu() && !capable(CAP_SYS_ADMIN)) return ERR_PTR(-EACCES); @@ -1601,7 +1600,7 @@ static struct perf_counter_context *find_get_context(pid_t pid, int cpu) return ERR_PTR(-EINVAL); /* - * We could be clever and allow to attach a counter to an + * We could be clever and allow to attach a event to an * offline CPU and activate it when the CPU comes up, but * that's for later. */ @@ -1628,7 +1627,7 @@ static struct perf_counter_context *find_get_context(pid_t pid, int cpu) return ERR_PTR(-ESRCH); /* - * Can't attach counters to a dying task. + * Can't attach events to a dying task. */ err = -ESRCH; if (task->flags & PF_EXITING) @@ -1647,13 +1646,13 @@ static struct perf_counter_context *find_get_context(pid_t pid, int cpu) } if (!ctx) { - ctx = kmalloc(sizeof(struct perf_counter_context), GFP_KERNEL); + ctx = kmalloc(sizeof(struct perf_event_context), GFP_KERNEL); err = -ENOMEM; if (!ctx) goto errout; - __perf_counter_init_context(ctx, task); + __perf_event_init_context(ctx, task); get_ctx(ctx); - if (cmpxchg(&task->perf_counter_ctxp, NULL, ctx)) { + if (cmpxchg(&task->perf_event_ctxp, NULL, ctx)) { /* * We raced with some other task; use * the context they set. @@ -1672,42 +1671,42 @@ static struct perf_counter_context *find_get_context(pid_t pid, int cpu) return ERR_PTR(err); } -static void free_counter_rcu(struct rcu_head *head) +static void free_event_rcu(struct rcu_head *head) { - struct perf_counter *counter; + struct perf_event *event; - counter = container_of(head, struct perf_counter, rcu_head); - if (counter->ns) - put_pid_ns(counter->ns); - kfree(counter); + event = container_of(head, struct perf_event, rcu_head); + if (event->ns) + put_pid_ns(event->ns); + kfree(event); } -static void perf_pending_sync(struct perf_counter *counter); +static void perf_pending_sync(struct perf_event *event); -static void free_counter(struct perf_counter *counter) +static void free_event(struct perf_event *event) { - perf_pending_sync(counter); + perf_pending_sync(event); - if (!counter->parent) { - atomic_dec(&nr_counters); - if (counter->attr.mmap) - atomic_dec(&nr_mmap_counters); - if (counter->attr.comm) - atomic_dec(&nr_comm_counters); - if (counter->attr.task) - atomic_dec(&nr_task_counters); + if (!event->parent) { + atomic_dec(&nr_events); + if (event->attr.mmap) + atomic_dec(&nr_mmap_events); + if (event->attr.comm) + atomic_dec(&nr_comm_events); + if (event->attr.task) + atomic_dec(&nr_task_events); } - if (counter->output) { - fput(counter->output->filp); - counter->output = NULL; + if (event->output) { + fput(event->output->filp); + event->output = NULL; } - if (counter->destroy) - counter->destroy(counter); + if (event->destroy) + event->destroy(event); - put_ctx(counter->ctx); - call_rcu(&counter->rcu_head, free_counter_rcu); + put_ctx(event->ctx); + call_rcu(&event->rcu_head, free_event_rcu); } /* @@ -1715,43 +1714,43 @@ static void free_counter(struct perf_counter *counter) */ static int perf_release(struct inode *inode, struct file *file) { - struct perf_counter *counter = file->private_data; - struct perf_counter_context *ctx = counter->ctx; + struct perf_event *event = file->private_data; + struct perf_event_context *ctx = event->ctx; file->private_data = NULL; WARN_ON_ONCE(ctx->parent_ctx); mutex_lock(&ctx->mutex); - perf_counter_remove_from_context(counter); + perf_event_remove_from_context(event); mutex_unlock(&ctx->mutex); - mutex_lock(&counter->owner->perf_counter_mutex); - list_del_init(&counter->owner_entry); - mutex_unlock(&counter->owner->perf_counter_mutex); - put_task_struct(counter->owner); + mutex_lock(&event->owner->perf_event_mutex); + list_del_init(&event->owner_entry); + mutex_unlock(&event->owner->perf_event_mutex); + put_task_struct(event->owner); - free_counter(counter); + free_event(event); return 0; } -static int perf_counter_read_size(struct perf_counter *counter) +static int perf_event_read_size(struct perf_event *event) { int entry = sizeof(u64); /* value */ int size = 0; int nr = 1; - if (counter->attr.read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) + if (event->attr.read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) size += sizeof(u64); - if (counter->attr.read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) + if (event->attr.read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) size += sizeof(u64); - if (counter->attr.read_format & PERF_FORMAT_ID) + if (event->attr.read_format & PERF_FORMAT_ID) entry += sizeof(u64); - if (counter->attr.read_format & PERF_FORMAT_GROUP) { - nr += counter->group_leader->nr_siblings; + if (event->attr.read_format & PERF_FORMAT_GROUP) { + nr += event->group_leader->nr_siblings; size += sizeof(u64); } @@ -1760,27 +1759,27 @@ static int perf_counter_read_size(struct perf_counter *counter) return size; } -static u64 perf_counter_read_value(struct perf_counter *counter) +static u64 perf_event_read_value(struct perf_event *event) { - struct perf_counter *child; + struct perf_event *child; u64 total = 0; - total += perf_counter_read(counter); - list_for_each_entry(child, &counter->child_list, child_list) - total += perf_counter_read(child); + total += perf_event_read(event); + list_for_each_entry(child, &event->child_list, child_list) + total += perf_event_read(child); return total; } -static int perf_counter_read_entry(struct perf_counter *counter, +static int perf_event_read_entry(struct perf_event *event, u64 read_format, char __user *buf) { int n = 0, count = 0; u64 values[2]; - values[n++] = perf_counter_read_value(counter); + values[n++] = perf_event_read_value(event); if (read_format & PERF_FORMAT_ID) - values[n++] = primary_counter_id(counter); + values[n++] = primary_event_id(event); count = n * sizeof(u64); @@ -1790,10 +1789,10 @@ static int perf_counter_read_entry(struct perf_counter *counter, return count; } -static int perf_counter_read_group(struct perf_counter *counter, +static int perf_event_read_group(struct perf_event *event, u64 read_format, char __user *buf) { - struct perf_counter *leader = counter->group_leader, *sub; + struct perf_event *leader = event->group_leader, *sub; int n = 0, size = 0, err = -EFAULT; u64 values[3]; @@ -1812,14 +1811,14 @@ static int perf_counter_read_group(struct perf_counter *counter, if (copy_to_user(buf, values, size)) return -EFAULT; - err = perf_counter_read_entry(leader, read_format, buf + size); + err = perf_event_read_entry(leader, read_format, buf + size); if (err < 0) return err; size += err; - list_for_each_entry(sub, &leader->sibling_list, list_entry) { - err = perf_counter_read_entry(sub, read_format, + list_for_each_entry(sub, &leader->sibling_list, group_entry) { + err = perf_event_read_entry(sub, read_format, buf + size); if (err < 0) return err; @@ -1830,23 +1829,23 @@ static int perf_counter_read_group(struct perf_counter *counter, return size; } -static int perf_counter_read_one(struct perf_counter *counter, +static int perf_event_read_one(struct perf_event *event, u64 read_format, char __user *buf) { u64 values[4]; int n = 0; - values[n++] = perf_counter_read_value(counter); + values[n++] = perf_event_read_value(event); if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) { - values[n++] = counter->total_time_enabled + - atomic64_read(&counter->child_total_time_enabled); + values[n++] = event->total_time_enabled + + atomic64_read(&event->child_total_time_enabled); } if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) { - values[n++] = counter->total_time_running + - atomic64_read(&counter->child_total_time_running); + values[n++] = event->total_time_running + + atomic64_read(&event->child_total_time_running); } if (read_format & PERF_FORMAT_ID) - values[n++] = primary_counter_id(counter); + values[n++] = primary_event_id(event); if (copy_to_user(buf, values, n * sizeof(u64))) return -EFAULT; @@ -1855,32 +1854,32 @@ static int perf_counter_read_one(struct perf_counter *counter, } /* - * Read the performance counter - simple non blocking version for now + * Read the performance event - simple non blocking version for now */ static ssize_t -perf_read_hw(struct perf_counter *counter, char __user *buf, size_t count) +perf_read_hw(struct perf_event *event, char __user *buf, size_t count) { - u64 read_format = counter->attr.read_format; + u64 read_format = event->attr.read_format; int ret; /* - * Return end-of-file for a read on a counter that is in + * Return end-of-file for a read on a event that is in * error state (i.e. because it was pinned but it couldn't be * scheduled on to the CPU at some point). */ - if (counter->state == PERF_COUNTER_STATE_ERROR) + if (event->state == PERF_EVENT_STATE_ERROR) return 0; - if (count < perf_counter_read_size(counter)) + if (count < perf_event_read_size(event)) return -ENOSPC; - WARN_ON_ONCE(counter->ctx->parent_ctx); - mutex_lock(&counter->child_mutex); + WARN_ON_ONCE(event->ctx->parent_ctx); + mutex_lock(&event->child_mutex); if (read_format & PERF_FORMAT_GROUP) - ret = perf_counter_read_group(counter, read_format, buf); + ret = perf_event_read_group(event, read_format, buf); else - ret = perf_counter_read_one(counter, read_format, buf); - mutex_unlock(&counter->child_mutex); + ret = perf_event_read_one(event, read_format, buf); + mutex_unlock(&event->child_mutex); return ret; } @@ -1888,79 +1887,79 @@ perf_read_hw(struct perf_counter *counter, char __user *buf, size_t count) static ssize_t perf_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { - struct perf_counter *counter = file->private_data; + struct perf_event *event = file->private_data; - return perf_read_hw(counter, buf, count); + return perf_read_hw(event, buf, count); } static unsigned int perf_poll(struct file *file, poll_table *wait) { - struct perf_counter *counter = file->private_data; + struct perf_event *event = file->private_data; struct perf_mmap_data *data; unsigned int events = POLL_HUP; rcu_read_lock(); - data = rcu_dereference(counter->data); + data = rcu_dereference(event->data); if (data) events = atomic_xchg(&data->poll, 0); rcu_read_unlock(); - poll_wait(file, &counter->waitq, wait); + poll_wait(file, &event->waitq, wait); return events; } -static void perf_counter_reset(struct perf_counter *counter) +static void perf_event_reset(struct perf_event *event) { - (void)perf_counter_read(counter); - atomic64_set(&counter->count, 0); - perf_counter_update_userpage(counter); + (void)perf_event_read(event); + atomic64_set(&event->count, 0); + perf_event_update_userpage(event); } /* - * Holding the top-level counter's child_mutex means that any - * descendant process that has inherited this counter will block - * in sync_child_counter if it goes to exit, thus satisfying the - * task existence requirements of perf_counter_enable/disable. + * Holding the top-level event's child_mutex means that any + * descendant process that has inherited this event will block + * in sync_child_event if it goes to exit, thus satisfying the + * task existence requirements of perf_event_enable/disable. */ -static void perf_counter_for_each_child(struct perf_counter *counter, - void (*func)(struct perf_counter *)) +static void perf_event_for_each_child(struct perf_event *event, + void (*func)(struct perf_event *)) { - struct perf_counter *child; + struct perf_event *child; - WARN_ON_ONCE(counter->ctx->parent_ctx); - mutex_lock(&counter->child_mutex); - func(counter); - list_for_each_entry(child, &counter->child_list, child_list) + WARN_ON_ONCE(event->ctx->parent_ctx); + mutex_lock(&event->child_mutex); + func(event); + list_for_each_entry(child, &event->child_list, child_list) func(child); - mutex_unlock(&counter->child_mutex); + mutex_unlock(&event->child_mutex); } -static void perf_counter_for_each(struct perf_counter *counter, - void (*func)(struct perf_counter *)) +static void perf_event_for_each(struct perf_event *event, + void (*func)(struct perf_event *)) { - struct perf_counter_context *ctx = counter->ctx; - struct perf_counter *sibling; + struct perf_event_context *ctx = event->ctx; + struct perf_event *sibling; WARN_ON_ONCE(ctx->parent_ctx); mutex_lock(&ctx->mutex); - counter = counter->group_leader; + event = event->group_leader; - perf_counter_for_each_child(counter, func); - func(counter); - list_for_each_entry(sibling, &counter->sibling_list, list_entry) - perf_counter_for_each_child(counter, func); + perf_event_for_each_child(event, func); + func(event); + list_for_each_entry(sibling, &event->sibling_list, group_entry) + perf_event_for_each_child(event, func); mutex_unlock(&ctx->mutex); } -static int perf_counter_period(struct perf_counter *counter, u64 __user *arg) +static int perf_event_period(struct perf_event *event, u64 __user *arg) { - struct perf_counter_context *ctx = counter->ctx; + struct perf_event_context *ctx = event->ctx; unsigned long size; int ret = 0; u64 value; - if (!counter->attr.sample_period) + if (!event->attr.sample_period) return -EINVAL; size = copy_from_user(&value, arg, sizeof(value)); @@ -1971,16 +1970,16 @@ static int perf_counter_period(struct perf_counter *counter, u64 __user *arg) return -EINVAL; spin_lock_irq(&ctx->lock); - if (counter->attr.freq) { - if (value > sysctl_perf_counter_sample_rate) { + if (event->attr.freq) { + if (value > sysctl_perf_event_sample_rate) { ret = -EINVAL; goto unlock; } - counter->attr.sample_freq = value; + event->attr.sample_freq = value; } else { - counter->attr.sample_period = value; - counter->hw.sample_period = value; + event->attr.sample_period = value; + event->hw.sample_period = value; } unlock: spin_unlock_irq(&ctx->lock); @@ -1988,80 +1987,80 @@ unlock: return ret; } -int perf_counter_set_output(struct perf_counter *counter, int output_fd); +int perf_event_set_output(struct perf_event *event, int output_fd); static long perf_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { - struct perf_counter *counter = file->private_data; - void (*func)(struct perf_counter *); + struct perf_event *event = file->private_data; + void (*func)(struct perf_event *); u32 flags = arg; switch (cmd) { - case PERF_COUNTER_IOC_ENABLE: - func = perf_counter_enable; + case PERF_EVENT_IOC_ENABLE: + func = perf_event_enable; break; - case PERF_COUNTER_IOC_DISABLE: - func = perf_counter_disable; + case PERF_EVENT_IOC_DISABLE: + func = perf_event_disable; break; - case PERF_COUNTER_IOC_RESET: - func = perf_counter_reset; + case PERF_EVENT_IOC_RESET: + func = perf_event_reset; break; - case PERF_COUNTER_IOC_REFRESH: - return perf_counter_refresh(counter, arg); + case PERF_EVENT_IOC_REFRESH: + return perf_event_refresh(event, arg); - case PERF_COUNTER_IOC_PERIOD: - return perf_counter_period(counter, (u64 __user *)arg); + case PERF_EVENT_IOC_PERIOD: + return perf_event_period(event, (u64 __user *)arg); - case PERF_COUNTER_IOC_SET_OUTPUT: - return perf_counter_set_output(counter, arg); + case PERF_EVENT_IOC_SET_OUTPUT: + return perf_event_set_output(event, arg); default: return -ENOTTY; } if (flags & PERF_IOC_FLAG_GROUP) - perf_counter_for_each(counter, func); + perf_event_for_each(event, func); else - perf_counter_for_each_child(counter, func); + perf_event_for_each_child(event, func); return 0; } -int perf_counter_task_enable(void) +int perf_event_task_enable(void) { - struct perf_counter *counter; + struct perf_event *event; - mutex_lock(¤t->perf_counter_mutex); - list_for_each_entry(counter, ¤t->perf_counter_list, owner_entry) - perf_counter_for_each_child(counter, perf_counter_enable); - mutex_unlock(¤t->perf_counter_mutex); + mutex_lock(¤t->perf_event_mutex); + list_for_each_entry(event, ¤t->perf_event_list, owner_entry) + perf_event_for_each_child(event, perf_event_enable); + mutex_unlock(¤t->perf_event_mutex); return 0; } -int perf_counter_task_disable(void) +int perf_event_task_disable(void) { - struct perf_counter *counter; + struct perf_event *event; - mutex_lock(¤t->perf_counter_mutex); - list_for_each_entry(counter, ¤t->perf_counter_list, owner_entry) - perf_counter_for_each_child(counter, perf_counter_disable); - mutex_unlock(¤t->perf_counter_mutex); + mutex_lock(¤t->perf_event_mutex); + list_for_each_entry(event, ¤t->perf_event_list, owner_entry) + perf_event_for_each_child(event, perf_event_disable); + mutex_unlock(¤t->perf_event_mutex); return 0; } -#ifndef PERF_COUNTER_INDEX_OFFSET -# define PERF_COUNTER_INDEX_OFFSET 0 +#ifndef PERF_EVENT_INDEX_OFFSET +# define PERF_EVENT_INDEX_OFFSET 0 #endif -static int perf_counter_index(struct perf_counter *counter) +static int perf_event_index(struct perf_event *event) { - if (counter->state != PERF_COUNTER_STATE_ACTIVE) + if (event->state != PERF_EVENT_STATE_ACTIVE) return 0; - return counter->hw.idx + 1 - PERF_COUNTER_INDEX_OFFSET; + return event->hw.idx + 1 - PERF_EVENT_INDEX_OFFSET; } /* @@ -2069,13 +2068,13 @@ static int perf_counter_index(struct perf_counter *counter) * the seqlock logic goes bad. We can not serialize this because the arch * code calls this from NMI context. */ -void perf_counter_update_userpage(struct perf_counter *counter) +void perf_event_update_userpage(struct perf_event *event) { - struct perf_counter_mmap_page *userpg; + struct perf_event_mmap_page *userpg; struct perf_mmap_data *data; rcu_read_lock(); - data = rcu_dereference(counter->data); + data = rcu_dereference(event->data); if (!data) goto unlock; @@ -2088,16 +2087,16 @@ void perf_counter_update_userpage(struct perf_counter *counter) preempt_disable(); ++userpg->lock; barrier(); - userpg->index = perf_counter_index(counter); - userpg->offset = atomic64_read(&counter->count); - if (counter->state == PERF_COUNTER_STATE_ACTIVE) - userpg->offset -= atomic64_read(&counter->hw.prev_count); + userpg->index = perf_event_index(event); + userpg->offset = atomic64_read(&event->count); + if (event->state == PERF_EVENT_STATE_ACTIVE) + userpg->offset -= atomic64_read(&event->hw.prev_count); - userpg->time_enabled = counter->total_time_enabled + - atomic64_read(&counter->child_total_time_enabled); + userpg->time_enabled = event->total_time_enabled + + atomic64_read(&event->child_total_time_enabled); - userpg->time_running = counter->total_time_running + - atomic64_read(&counter->child_total_time_running); + userpg->time_running = event->total_time_running + + atomic64_read(&event->child_total_time_running); barrier(); ++userpg->lock; @@ -2108,7 +2107,7 @@ unlock: static int perf_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) { - struct perf_counter *counter = vma->vm_file->private_data; + struct perf_event *event = vma->vm_file->private_data; struct perf_mmap_data *data; int ret = VM_FAULT_SIGBUS; @@ -2119,7 +2118,7 @@ static int perf_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) } rcu_read_lock(); - data = rcu_dereference(counter->data); + data = rcu_dereference(event->data); if (!data) goto unlock; @@ -2148,13 +2147,13 @@ unlock: return ret; } -static int perf_mmap_data_alloc(struct perf_counter *counter, int nr_pages) +static int perf_mmap_data_alloc(struct perf_event *event, int nr_pages) { struct perf_mmap_data *data; unsigned long size; int i; - WARN_ON(atomic_read(&counter->mmap_count)); + WARN_ON(atomic_read(&event->mmap_count)); size = sizeof(struct perf_mmap_data); size += nr_pages * sizeof(void *); @@ -2176,14 +2175,14 @@ static int perf_mmap_data_alloc(struct perf_counter *counter, int nr_pages) data->nr_pages = nr_pages; atomic_set(&data->lock, -1); - if (counter->attr.watermark) { + if (event->attr.watermark) { data->watermark = min_t(long, PAGE_SIZE * nr_pages, - counter->attr.wakeup_watermark); + event->attr.wakeup_watermark); } if (!data->watermark) data->watermark = max(PAGE_SIZE, PAGE_SIZE * nr_pages / 4); - rcu_assign_pointer(counter->data, data); + rcu_assign_pointer(event->data, data); return 0; @@ -2222,35 +2221,35 @@ static void __perf_mmap_data_free(struct rcu_head *rcu_head) kfree(data); } -static void perf_mmap_data_free(struct perf_counter *counter) +static void perf_mmap_data_free(struct perf_event *event) { - struct perf_mmap_data *data = counter->data; + struct perf_mmap_data *data = event->data; - WARN_ON(atomic_read(&counter->mmap_count)); + WARN_ON(atomic_read(&event->mmap_count)); - rcu_assign_pointer(counter->data, NULL); + rcu_assign_pointer(event->data, NULL); call_rcu(&data->rcu_head, __perf_mmap_data_free); } static void perf_mmap_open(struct vm_area_struct *vma) { - struct perf_counter *counter = vma->vm_file->private_data; + struct perf_event *event = vma->vm_file->private_data; - atomic_inc(&counter->mmap_count); + atomic_inc(&event->mmap_count); } static void perf_mmap_close(struct vm_area_struct *vma) { - struct perf_counter *counter = vma->vm_file->private_data; + struct perf_event *event = vma->vm_file->private_data; - WARN_ON_ONCE(counter->ctx->parent_ctx); - if (atomic_dec_and_mutex_lock(&counter->mmap_count, &counter->mmap_mutex)) { + WARN_ON_ONCE(event->ctx->parent_ctx); + if (atomic_dec_and_mutex_lock(&event->mmap_count, &event->mmap_mutex)) { struct user_struct *user = current_user(); - atomic_long_sub(counter->data->nr_pages + 1, &user->locked_vm); - vma->vm_mm->locked_vm -= counter->data->nr_locked; - perf_mmap_data_free(counter); - mutex_unlock(&counter->mmap_mutex); + atomic_long_sub(event->data->nr_pages + 1, &user->locked_vm); + vma->vm_mm->locked_vm -= event->data->nr_locked; + perf_mmap_data_free(event); + mutex_unlock(&event->mmap_mutex); } } @@ -2263,7 +2262,7 @@ static struct vm_operations_struct perf_mmap_vmops = { static int perf_mmap(struct file *file, struct vm_area_struct *vma) { - struct perf_counter *counter = file->private_data; + struct perf_event *event = file->private_data; unsigned long user_locked, user_lock_limit; struct user_struct *user = current_user(); unsigned long locked, lock_limit; @@ -2291,21 +2290,21 @@ static int perf_mmap(struct file *file, struct vm_area_struct *vma) if (vma->vm_pgoff != 0) return -EINVAL; - WARN_ON_ONCE(counter->ctx->parent_ctx); - mutex_lock(&counter->mmap_mutex); - if (counter->output) { + WARN_ON_ONCE(event->ctx->parent_ctx); + mutex_lock(&event->mmap_mutex); + if (event->output) { ret = -EINVAL; goto unlock; } - if (atomic_inc_not_zero(&counter->mmap_count)) { - if (nr_pages != counter->data->nr_pages) + if (atomic_inc_not_zero(&event->mmap_count)) { + if (nr_pages != event->data->nr_pages) ret = -EINVAL; goto unlock; } user_extra = nr_pages + 1; - user_lock_limit = sysctl_perf_counter_mlock >> (PAGE_SHIFT - 10); + user_lock_limit = sysctl_perf_event_mlock >> (PAGE_SHIFT - 10); /* * Increase the limit linearly with more CPUs: @@ -2328,20 +2327,20 @@ static int perf_mmap(struct file *file, struct vm_area_struct *vma) goto unlock; } - WARN_ON(counter->data); - ret = perf_mmap_data_alloc(counter, nr_pages); + WARN_ON(event->data); + ret = perf_mmap_data_alloc(event, nr_pages); if (ret) goto unlock; - atomic_set(&counter->mmap_count, 1); + atomic_set(&event->mmap_count, 1); atomic_long_add(user_extra, &user->locked_vm); vma->vm_mm->locked_vm += extra; - counter->data->nr_locked = extra; + event->data->nr_locked = extra; if (vma->vm_flags & VM_WRITE) - counter->data->writable = 1; + event->data->writable = 1; unlock: - mutex_unlock(&counter->mmap_mutex); + mutex_unlock(&event->mmap_mutex); vma->vm_flags |= VM_RESERVED; vma->vm_ops = &perf_mmap_vmops; @@ -2352,11 +2351,11 @@ unlock: static int perf_fasync(int fd, struct file *filp, int on) { struct inode *inode = filp->f_path.dentry->d_inode; - struct perf_counter *counter = filp->private_data; + struct perf_event *event = filp->private_data; int retval; mutex_lock(&inode->i_mutex); - retval = fasync_helper(fd, filp, on, &counter->fasync); + retval = fasync_helper(fd, filp, on, &event->fasync); mutex_unlock(&inode->i_mutex); if (retval < 0) @@ -2376,19 +2375,19 @@ static const struct file_operations perf_fops = { }; /* - * Perf counter wakeup + * Perf event wakeup * * If there's data, ensure we set the poll() state and publish everything * to user-space before waking everybody up. */ -void perf_counter_wakeup(struct perf_counter *counter) +void perf_event_wakeup(struct perf_event *event) { - wake_up_all(&counter->waitq); + wake_up_all(&event->waitq); - if (counter->pending_kill) { - kill_fasync(&counter->fasync, SIGIO, counter->pending_kill); - counter->pending_kill = 0; + if (event->pending_kill) { + kill_fasync(&event->fasync, SIGIO, event->pending_kill); + event->pending_kill = 0; } } @@ -2401,19 +2400,19 @@ void perf_counter_wakeup(struct perf_counter *counter) * single linked list and use cmpxchg() to add entries lockless. */ -static void perf_pending_counter(struct perf_pending_entry *entry) +static void perf_pending_event(struct perf_pending_entry *entry) { - struct perf_counter *counter = container_of(entry, - struct perf_counter, pending); + struct perf_event *event = container_of(entry, + struct perf_event, pending); - if (counter->pending_disable) { - counter->pending_disable = 0; - __perf_counter_disable(counter); + if (event->pending_disable) { + event->pending_disable = 0; + __perf_event_disable(event); } - if (counter->pending_wakeup) { - counter->pending_wakeup = 0; - perf_counter_wakeup(counter); + if (event->pending_wakeup) { + event->pending_wakeup = 0; + perf_event_wakeup(event); } } @@ -2439,7 +2438,7 @@ static void perf_pending_queue(struct perf_pending_entry *entry, entry->next = *head; } while (cmpxchg(head, entry->next, entry) != entry->next); - set_perf_counter_pending(); + set_perf_event_pending(); put_cpu_var(perf_pending_head); } @@ -2472,7 +2471,7 @@ static int __perf_pending_run(void) return nr; } -static inline int perf_not_pending(struct perf_counter *counter) +static inline int perf_not_pending(struct perf_event *event) { /* * If we flush on whatever cpu we run, there is a chance we don't @@ -2487,15 +2486,15 @@ static inline int perf_not_pending(struct perf_counter *counter) * so that we do not miss the wakeup. -- see perf_pending_handle() */ smp_rmb(); - return counter->pending.next == NULL; + return event->pending.next == NULL; } -static void perf_pending_sync(struct perf_counter *counter) +static void perf_pending_sync(struct perf_event *event) { - wait_event(counter->waitq, perf_not_pending(counter)); + wait_event(event->waitq, perf_not_pending(event)); } -void perf_counter_do_pending(void) +void perf_event_do_pending(void) { __perf_pending_run(); } @@ -2536,25 +2535,25 @@ static void perf_output_wakeup(struct perf_output_handle *handle) atomic_set(&handle->data->poll, POLL_IN); if (handle->nmi) { - handle->counter->pending_wakeup = 1; - perf_pending_queue(&handle->counter->pending, - perf_pending_counter); + handle->event->pending_wakeup = 1; + perf_pending_queue(&handle->event->pending, + perf_pending_event); } else - perf_counter_wakeup(handle->counter); + perf_event_wakeup(handle->event); } /* * Curious locking construct. * - * We need to ensure a later event doesn't publish a head when a former - * event isn't done writing. However since we need to deal with NMIs we + * We need to ensure a later event_id doesn't publish a head when a former + * event_id isn't done writing. However since we need to deal with NMIs we * cannot fully serialize things. * * What we do is serialize between CPUs so we only have to deal with NMI * nesting on a single CPU. * * We only publish the head (and generate a wakeup) when the outer-most - * event completes. + * event_id completes. */ static void perf_output_lock(struct perf_output_handle *handle) { @@ -2658,10 +2657,10 @@ void perf_output_copy(struct perf_output_handle *handle, } int perf_output_begin(struct perf_output_handle *handle, - struct perf_counter *counter, unsigned int size, + struct perf_event *event, unsigned int size, int nmi, int sample) { - struct perf_counter *output_counter; + struct perf_event *output_event; struct perf_mmap_data *data; unsigned long tail, offset, head; int have_lost; @@ -2673,21 +2672,21 @@ int perf_output_begin(struct perf_output_handle *handle, rcu_read_lock(); /* - * For inherited counters we send all the output towards the parent. + * For inherited events we send all the output towards the parent. */ - if (counter->parent) - counter = counter->parent; + if (event->parent) + event = event->parent; - output_counter = rcu_dereference(counter->output); - if (output_counter) - counter = output_counter; + output_event = rcu_dereference(event->output); + if (output_event) + event = output_event; - data = rcu_dereference(counter->data); + data = rcu_dereference(event->data); if (!data) goto out; handle->data = data; - handle->counter = counter; + handle->event = event; handle->nmi = nmi; handle->sample = sample; @@ -2721,10 +2720,10 @@ int perf_output_begin(struct perf_output_handle *handle, atomic_set(&data->wakeup, 1); if (have_lost) { - lost_event.header.type = PERF_EVENT_LOST; + lost_event.header.type = PERF_RECORD_LOST; lost_event.header.misc = 0; lost_event.header.size = sizeof(lost_event); - lost_event.id = counter->id; + lost_event.id = event->id; lost_event.lost = atomic_xchg(&data->lost, 0); perf_output_put(handle, lost_event); @@ -2743,10 +2742,10 @@ out: void perf_output_end(struct perf_output_handle *handle) { - struct perf_counter *counter = handle->counter; + struct perf_event *event = handle->event; struct perf_mmap_data *data = handle->data; - int wakeup_events = counter->attr.wakeup_events; + int wakeup_events = event->attr.wakeup_events; if (handle->sample && wakeup_events) { int events = atomic_inc_return(&data->events); @@ -2760,58 +2759,58 @@ void perf_output_end(struct perf_output_handle *handle) rcu_read_unlock(); } -static u32 perf_counter_pid(struct perf_counter *counter, struct task_struct *p) +static u32 perf_event_pid(struct perf_event *event, struct task_struct *p) { /* - * only top level counters have the pid namespace they were created in + * only top level events have the pid namespace they were created in */ - if (counter->parent) - counter = counter->parent; + if (event->parent) + event = event->parent; - return task_tgid_nr_ns(p, counter->ns); + return task_tgid_nr_ns(p, event->ns); } -static u32 perf_counter_tid(struct perf_counter *counter, struct task_struct *p) +static u32 perf_event_tid(struct perf_event *event, struct task_struct *p) { /* - * only top level counters have the pid namespace they were created in + * only top level events have the pid namespace they were created in */ - if (counter->parent) - counter = counter->parent; + if (event->parent) + event = event->parent; - return task_pid_nr_ns(p, counter->ns); + return task_pid_nr_ns(p, event->ns); } static void perf_output_read_one(struct perf_output_handle *handle, - struct perf_counter *counter) + struct perf_event *event) { - u64 read_format = counter->attr.read_format; + u64 read_format = event->attr.read_format; u64 values[4]; int n = 0; - values[n++] = atomic64_read(&counter->count); + values[n++] = atomic64_read(&event->count); if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) { - values[n++] = counter->total_time_enabled + - atomic64_read(&counter->child_total_time_enabled); + values[n++] = event->total_time_enabled + + atomic64_read(&event->child_total_time_enabled); } if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) { - values[n++] = counter->total_time_running + - atomic64_read(&counter->child_total_time_running); + values[n++] = event->total_time_running + + atomic64_read(&event->child_total_time_running); } if (read_format & PERF_FORMAT_ID) - values[n++] = primary_counter_id(counter); + values[n++] = primary_event_id(event); perf_output_copy(handle, values, n * sizeof(u64)); } /* - * XXX PERF_FORMAT_GROUP vs inherited counters seems difficult. + * XXX PERF_FORMAT_GROUP vs inherited events seems difficult. */ static void perf_output_read_group(struct perf_output_handle *handle, - struct perf_counter *counter) + struct perf_event *event) { - struct perf_counter *leader = counter->group_leader, *sub; - u64 read_format = counter->attr.read_format; + struct perf_event *leader = event->group_leader, *sub; + u64 read_format = event->attr.read_format; u64 values[5]; int n = 0; @@ -2823,42 +2822,42 @@ static void perf_output_read_group(struct perf_output_handle *handle, if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) values[n++] = leader->total_time_running; - if (leader != counter) + if (leader != event) leader->pmu->read(leader); values[n++] = atomic64_read(&leader->count); if (read_format & PERF_FORMAT_ID) - values[n++] = primary_counter_id(leader); + values[n++] = primary_event_id(leader); perf_output_copy(handle, values, n * sizeof(u64)); - list_for_each_entry(sub, &leader->sibling_list, list_entry) { + list_for_each_entry(sub, &leader->sibling_list, group_entry) { n = 0; - if (sub != counter) + if (sub != event) sub->pmu->read(sub); values[n++] = atomic64_read(&sub->count); if (read_format & PERF_FORMAT_ID) - values[n++] = primary_counter_id(sub); + values[n++] = primary_event_id(sub); perf_output_copy(handle, values, n * sizeof(u64)); } } static void perf_output_read(struct perf_output_handle *handle, - struct perf_counter *counter) + struct perf_event *event) { - if (counter->attr.read_format & PERF_FORMAT_GROUP) - perf_output_read_group(handle, counter); + if (event->attr.read_format & PERF_FORMAT_GROUP) + perf_output_read_group(handle, event); else - perf_output_read_one(handle, counter); + perf_output_read_one(handle, event); } void perf_output_sample(struct perf_output_handle *handle, struct perf_event_header *header, struct perf_sample_data *data, - struct perf_counter *counter) + struct perf_event *event) { u64 sample_type = data->type; @@ -2889,7 +2888,7 @@ void perf_output_sample(struct perf_output_handle *handle, perf_output_put(handle, data->period); if (sample_type & PERF_SAMPLE_READ) - perf_output_read(handle, counter); + perf_output_read(handle, event); if (sample_type & PERF_SAMPLE_CALLCHAIN) { if (data->callchain) { @@ -2927,14 +2926,14 @@ void perf_output_sample(struct perf_output_handle *handle, void perf_prepare_sample(struct perf_event_header *header, struct perf_sample_data *data, - struct perf_counter *counter, + struct perf_event *event, struct pt_regs *regs) { - u64 sample_type = counter->attr.sample_type; + u64 sample_type = event->attr.sample_type; data->type = sample_type; - header->type = PERF_EVENT_SAMPLE; + header->type = PERF_RECORD_SAMPLE; header->size = sizeof(*header); header->misc = 0; @@ -2948,8 +2947,8 @@ void perf_prepare_sample(struct perf_event_header *header, if (sample_type & PERF_SAMPLE_TID) { /* namespace issues */ - data->tid_entry.pid = perf_counter_pid(counter, current); - data->tid_entry.tid = perf_counter_tid(counter, current); + data->tid_entry.pid = perf_event_pid(event, current); + data->tid_entry.tid = perf_event_tid(event, current); header->size += sizeof(data->tid_entry); } @@ -2964,13 +2963,13 @@ void perf_prepare_sample(struct perf_event_header *header, header->size += sizeof(data->addr); if (sample_type & PERF_SAMPLE_ID) { - data->id = primary_counter_id(counter); + data->id = primary_event_id(event); header->size += sizeof(data->id); } if (sample_type & PERF_SAMPLE_STREAM_ID) { - data->stream_id = counter->id; + data->stream_id = event->id; header->size += sizeof(data->stream_id); } @@ -2986,7 +2985,7 @@ void perf_prepare_sample(struct perf_event_header *header, header->size += sizeof(data->period); if (sample_type & PERF_SAMPLE_READ) - header->size += perf_counter_read_size(counter); + header->size += perf_event_read_size(event); if (sample_type & PERF_SAMPLE_CALLCHAIN) { int size = 1; @@ -3012,25 +3011,25 @@ void perf_prepare_sample(struct perf_event_header *header, } } -static void perf_counter_output(struct perf_counter *counter, int nmi, +static void perf_event_output(struct perf_event *event, int nmi, struct perf_sample_data *data, struct pt_regs *regs) { struct perf_output_handle handle; struct perf_event_header header; - perf_prepare_sample(&header, data, counter, regs); + perf_prepare_sample(&header, data, event, regs); - if (perf_output_begin(&handle, counter, header.size, nmi, 1)) + if (perf_output_begin(&handle, event, header.size, nmi, 1)) return; - perf_output_sample(&handle, &header, data, counter); + perf_output_sample(&handle, &header, data, event); perf_output_end(&handle); } /* - * read event + * read event_id */ struct perf_read_event { @@ -3041,27 +3040,27 @@ struct perf_read_event { }; static void -perf_counter_read_event(struct perf_counter *counter, +perf_event_read_event(struct perf_event *event, struct task_struct *task) { struct perf_output_handle handle; - struct perf_read_event event = { + struct perf_read_event read_event = { .header = { - .type = PERF_EVENT_READ, + .type = PERF_RECORD_READ, .misc = 0, - .size = sizeof(event) + perf_counter_read_size(counter), + .size = sizeof(read_event) + perf_event_read_size(event), }, - .pid = perf_counter_pid(counter, task), - .tid = perf_counter_tid(counter, task), + .pid = perf_event_pid(event, task), + .tid = perf_event_tid(event, task), }; int ret; - ret = perf_output_begin(&handle, counter, event.header.size, 0, 0); + ret = perf_output_begin(&handle, event, read_event.header.size, 0, 0); if (ret) return; - perf_output_put(&handle, event); - perf_output_read(&handle, counter); + perf_output_put(&handle, read_event); + perf_output_read(&handle, event); perf_output_end(&handle); } @@ -3074,7 +3073,7 @@ perf_counter_read_event(struct perf_counter *counter, struct perf_task_event { struct task_struct *task; - struct perf_counter_context *task_ctx; + struct perf_event_context *task_ctx; struct { struct perf_event_header header; @@ -3084,10 +3083,10 @@ struct perf_task_event { u32 tid; u32 ptid; u64 time; - } event; + } event_id; }; -static void perf_counter_task_output(struct perf_counter *counter, +static void perf_event_task_output(struct perf_event *event, struct perf_task_event *task_event) { struct perf_output_handle handle; @@ -3095,85 +3094,85 @@ static void perf_counter_task_output(struct perf_counter *counter, struct task_struct *task = task_event->task; int ret; - size = task_event->event.header.size; - ret = perf_output_begin(&handle, counter, size, 0, 0); + size = task_event->event_id.header.size; + ret = perf_output_begin(&handle, event, size, 0, 0); if (ret) return; - task_event->event.pid = perf_counter_pid(counter, task); - task_event->event.ppid = perf_counter_pid(counter, current); + task_event->event_id.pid = perf_event_pid(event, task); + task_event->event_id.ppid = perf_event_pid(event, current); - task_event->event.tid = perf_counter_tid(counter, task); - task_event->event.ptid = perf_counter_tid(counter, current); + task_event->event_id.tid = perf_event_tid(event, task); + task_event->event_id.ptid = perf_event_tid(event, current); - task_event->event.time = perf_clock(); + task_event->event_id.time = perf_clock(); - perf_output_put(&handle, task_event->event); + perf_output_put(&handle, task_event->event_id); perf_output_end(&handle); } -static int perf_counter_task_match(struct perf_counter *counter) +static int perf_event_task_match(struct perf_event *event) { - if (counter->attr.comm || counter->attr.mmap || counter->attr.task) + if (event->attr.comm || event->attr.mmap || event->attr.task) return 1; return 0; } -static void perf_counter_task_ctx(struct perf_counter_context *ctx, +static void perf_event_task_ctx(struct perf_event_context *ctx, struct perf_task_event *task_event) { - struct perf_counter *counter; + struct perf_event *event; if (system_state != SYSTEM_RUNNING || list_empty(&ctx->event_list)) return; rcu_read_lock(); - list_for_each_entry_rcu(counter, &ctx->event_list, event_entry) { - if (perf_counter_task_match(counter)) - perf_counter_task_output(counter, task_event); + list_for_each_entry_rcu(event, &ctx->event_list, event_entry) { + if (perf_event_task_match(event)) + perf_event_task_output(event, task_event); } rcu_read_unlock(); } -static void perf_counter_task_event(struct perf_task_event *task_event) +static void perf_event_task_event(struct perf_task_event *task_event) { struct perf_cpu_context *cpuctx; - struct perf_counter_context *ctx = task_event->task_ctx; + struct perf_event_context *ctx = task_event->task_ctx; cpuctx = &get_cpu_var(perf_cpu_context); - perf_counter_task_ctx(&cpuctx->ctx, task_event); + perf_event_task_ctx(&cpuctx->ctx, task_event); put_cpu_var(perf_cpu_context); rcu_read_lock(); if (!ctx) - ctx = rcu_dereference(task_event->task->perf_counter_ctxp); + ctx = rcu_dereference(task_event->task->perf_event_ctxp); if (ctx) - perf_counter_task_ctx(ctx, task_event); + perf_event_task_ctx(ctx, task_event); rcu_read_unlock(); } -static void perf_counter_task(struct task_struct *task, - struct perf_counter_context *task_ctx, +static void perf_event_task(struct task_struct *task, + struct perf_event_context *task_ctx, int new) { struct perf_task_event task_event; - if (!atomic_read(&nr_comm_counters) && - !atomic_read(&nr_mmap_counters) && - !atomic_read(&nr_task_counters)) + if (!atomic_read(&nr_comm_events) && + !atomic_read(&nr_mmap_events) && + !atomic_read(&nr_task_events)) return; task_event = (struct perf_task_event){ .task = task, .task_ctx = task_ctx, - .event = { + .event_id = { .header = { - .type = new ? PERF_EVENT_FORK : PERF_EVENT_EXIT, + .type = new ? PERF_RECORD_FORK : PERF_RECORD_EXIT, .misc = 0, - .size = sizeof(task_event.event), + .size = sizeof(task_event.event_id), }, /* .pid */ /* .ppid */ @@ -3182,12 +3181,12 @@ static void perf_counter_task(struct task_struct *task, }, }; - perf_counter_task_event(&task_event); + perf_event_task_event(&task_event); } -void perf_counter_fork(struct task_struct *task) +void perf_event_fork(struct task_struct *task) { - perf_counter_task(task, NULL, 1); + perf_event_task(task, NULL, 1); } /* @@ -3204,56 +3203,56 @@ struct perf_comm_event { u32 pid; u32 tid; - } event; + } event_id; }; -static void perf_counter_comm_output(struct perf_counter *counter, +static void perf_event_comm_output(struct perf_event *event, struct perf_comm_event *comm_event) { struct perf_output_handle handle; - int size = comm_event->event.header.size; - int ret = perf_output_begin(&handle, counter, size, 0, 0); + int size = comm_event->event_id.header.size; + int ret = perf_output_begin(&handle, event, size, 0, 0); if (ret) return; - comm_event->event.pid = perf_counter_pid(counter, comm_event->task); - comm_event->event.tid = perf_counter_tid(counter, comm_event->task); + comm_event->event_id.pid = perf_event_pid(event, comm_event->task); + comm_event->event_id.tid = perf_event_tid(event, comm_event->task); - perf_output_put(&handle, comm_event->event); + perf_output_put(&handle, comm_event->event_id); perf_output_copy(&handle, comm_event->comm, comm_event->comm_size); perf_output_end(&handle); } -static int perf_counter_comm_match(struct perf_counter *counter) +static int perf_event_comm_match(struct perf_event *event) { - if (counter->attr.comm) + if (event->attr.comm) return 1; return 0; } -static void perf_counter_comm_ctx(struct perf_counter_context *ctx, +static void perf_event_comm_ctx(struct perf_event_context *ctx, struct perf_comm_event *comm_event) { - struct perf_counter *counter; + struct perf_event *event; if (system_state != SYSTEM_RUNNING || list_empty(&ctx->event_list)) return; rcu_read_lock(); - list_for_each_entry_rcu(counter, &ctx->event_list, event_entry) { - if (perf_counter_comm_match(counter)) - perf_counter_comm_output(counter, comm_event); + list_for_each_entry_rcu(event, &ctx->event_list, event_entry) { + if (perf_event_comm_match(event)) + perf_event_comm_output(event, comm_event); } rcu_read_unlock(); } -static void perf_counter_comm_event(struct perf_comm_event *comm_event) +static void perf_event_comm_event(struct perf_comm_event *comm_event) { struct perf_cpu_context *cpuctx; - struct perf_counter_context *ctx; + struct perf_event_context *ctx; unsigned int size; char comm[TASK_COMM_LEN]; @@ -3264,10 +3263,10 @@ static void perf_counter_comm_event(struct perf_comm_event *comm_event) comm_event->comm = comm; comm_event->comm_size = size; - comm_event->event.header.size = sizeof(comm_event->event) + size; + comm_event->event_id.header.size = sizeof(comm_event->event_id) + size; cpuctx = &get_cpu_var(perf_cpu_context); - perf_counter_comm_ctx(&cpuctx->ctx, comm_event); + perf_event_comm_ctx(&cpuctx->ctx, comm_event); put_cpu_var(perf_cpu_context); rcu_read_lock(); @@ -3275,29 +3274,29 @@ static void perf_counter_comm_event(struct perf_comm_event *comm_event) * doesn't really matter which of the child contexts the * events ends up in. */ - ctx = rcu_dereference(current->perf_counter_ctxp); + ctx = rcu_dereference(current->perf_event_ctxp); if (ctx) - perf_counter_comm_ctx(ctx, comm_event); + perf_event_comm_ctx(ctx, comm_event); rcu_read_unlock(); } -void perf_counter_comm(struct task_struct *task) +void perf_event_comm(struct task_struct *task) { struct perf_comm_event comm_event; - if (task->perf_counter_ctxp) - perf_counter_enable_on_exec(task); + if (task->perf_event_ctxp) + perf_event_enable_on_exec(task); - if (!atomic_read(&nr_comm_counters)) + if (!atomic_read(&nr_comm_events)) return; comm_event = (struct perf_comm_event){ .task = task, /* .comm */ /* .comm_size */ - .event = { + .event_id = { .header = { - .type = PERF_EVENT_COMM, + .type = PERF_RECORD_COMM, .misc = 0, /* .size */ }, @@ -3306,7 +3305,7 @@ void perf_counter_comm(struct task_struct *task) }, }; - perf_counter_comm_event(&comm_event); + perf_event_comm_event(&comm_event); } /* @@ -3327,57 +3326,57 @@ struct perf_mmap_event { u64 start; u64 len; u64 pgoff; - } event; + } event_id; }; -static void perf_counter_mmap_output(struct perf_counter *counter, +static void perf_event_mmap_output(struct perf_event *event, struct perf_mmap_event *mmap_event) { struct perf_output_handle handle; - int size = mmap_event->event.header.size; - int ret = perf_output_begin(&handle, counter, size, 0, 0); + int size = mmap_event->event_id.header.size; + int ret = perf_output_begin(&handle, event, size, 0, 0); if (ret) return; - mmap_event->event.pid = perf_counter_pid(counter, current); - mmap_event->event.tid = perf_counter_tid(counter, current); + mmap_event->event_id.pid = perf_event_pid(event, current); + mmap_event->event_id.tid = perf_event_tid(event, current); - perf_output_put(&handle, mmap_event->event); + perf_output_put(&handle, mmap_event->event_id); perf_output_copy(&handle, mmap_event->file_name, mmap_event->file_size); perf_output_end(&handle); } -static int perf_counter_mmap_match(struct perf_counter *counter, +static int perf_event_mmap_match(struct perf_event *event, struct perf_mmap_event *mmap_event) { - if (counter->attr.mmap) + if (event->attr.mmap) return 1; return 0; } -static void perf_counter_mmap_ctx(struct perf_counter_context *ctx, +static void perf_event_mmap_ctx(struct perf_event_context *ctx, struct perf_mmap_event *mmap_event) { - struct perf_counter *counter; + struct perf_event *event; if (system_state != SYSTEM_RUNNING || list_empty(&ctx->event_list)) return; rcu_read_lock(); - list_for_each_entry_rcu(counter, &ctx->event_list, event_entry) { - if (perf_counter_mmap_match(counter, mmap_event)) - perf_counter_mmap_output(counter, mmap_event); + list_for_each_entry_rcu(event, &ctx->event_list, event_entry) { + if (perf_event_mmap_match(event, mmap_event)) + perf_event_mmap_output(event, mmap_event); } rcu_read_unlock(); } -static void perf_counter_mmap_event(struct perf_mmap_event *mmap_event) +static void perf_event_mmap_event(struct perf_mmap_event *mmap_event) { struct perf_cpu_context *cpuctx; - struct perf_counter_context *ctx; + struct perf_event_context *ctx; struct vm_area_struct *vma = mmap_event->vma; struct file *file = vma->vm_file; unsigned int size; @@ -3425,10 +3424,10 @@ got_name: mmap_event->file_name = name; mmap_event->file_size = size; - mmap_event->event.header.size = sizeof(mmap_event->event) + size; + mmap_event->event_id.header.size = sizeof(mmap_event->event_id) + size; cpuctx = &get_cpu_var(perf_cpu_context); - perf_counter_mmap_ctx(&cpuctx->ctx, mmap_event); + perf_event_mmap_ctx(&cpuctx->ctx, mmap_event); put_cpu_var(perf_cpu_context); rcu_read_lock(); @@ -3436,28 +3435,28 @@ got_name: * doesn't really matter which of the child contexts the * events ends up in. */ - ctx = rcu_dereference(current->perf_counter_ctxp); + ctx = rcu_dereference(current->perf_event_ctxp); if (ctx) - perf_counter_mmap_ctx(ctx, mmap_event); + perf_event_mmap_ctx(ctx, mmap_event); rcu_read_unlock(); kfree(buf); } -void __perf_counter_mmap(struct vm_area_struct *vma) +void __perf_event_mmap(struct vm_area_struct *vma) { struct perf_mmap_event mmap_event; - if (!atomic_read(&nr_mmap_counters)) + if (!atomic_read(&nr_mmap_events)) return; mmap_event = (struct perf_mmap_event){ .vma = vma, /* .file_name */ /* .file_size */ - .event = { + .event_id = { .header = { - .type = PERF_EVENT_MMAP, + .type = PERF_RECORD_MMAP, .misc = 0, /* .size */ }, @@ -3469,14 +3468,14 @@ void __perf_counter_mmap(struct vm_area_struct *vma) }, }; - perf_counter_mmap_event(&mmap_event); + perf_event_mmap_event(&mmap_event); } /* * IRQ throttle logging */ -static void perf_log_throttle(struct perf_counter *counter, int enable) +static void perf_log_throttle(struct perf_event *event, int enable) { struct perf_output_handle handle; int ret; @@ -3488,19 +3487,19 @@ static void perf_log_throttle(struct perf_counter *counter, int enable) u64 stream_id; } throttle_event = { .header = { - .type = PERF_EVENT_THROTTLE, + .type = PERF_RECORD_THROTTLE, .misc = 0, .size = sizeof(throttle_event), }, .time = perf_clock(), - .id = primary_counter_id(counter), - .stream_id = counter->id, + .id = primary_event_id(event), + .stream_id = event->id, }; if (enable) - throttle_event.header.type = PERF_EVENT_UNTHROTTLE; + throttle_event.header.type = PERF_RECORD_UNTHROTTLE; - ret = perf_output_begin(&handle, counter, sizeof(throttle_event), 1, 0); + ret = perf_output_begin(&handle, event, sizeof(throttle_event), 1, 0); if (ret) return; @@ -3509,18 +3508,18 @@ static void perf_log_throttle(struct perf_counter *counter, int enable) } /* - * Generic counter overflow handling, sampling. + * Generic event overflow handling, sampling. */ -static int __perf_counter_overflow(struct perf_counter *counter, int nmi, +static int __perf_event_overflow(struct perf_event *event, int nmi, int throttle, struct perf_sample_data *data, struct pt_regs *regs) { - int events = atomic_read(&counter->event_limit); - struct hw_perf_counter *hwc = &counter->hw; + int events = atomic_read(&event->event_limit); + struct hw_perf_event *hwc = &event->hw; int ret = 0; - throttle = (throttle && counter->pmu->unthrottle != NULL); + throttle = (throttle && event->pmu->unthrottle != NULL); if (!throttle) { hwc->interrupts++; @@ -3528,73 +3527,73 @@ static int __perf_counter_overflow(struct perf_counter *counter, int nmi, if (hwc->interrupts != MAX_INTERRUPTS) { hwc->interrupts++; if (HZ * hwc->interrupts > - (u64)sysctl_perf_counter_sample_rate) { + (u64)sysctl_perf_event_sample_rate) { hwc->interrupts = MAX_INTERRUPTS; - perf_log_throttle(counter, 0); + perf_log_throttle(event, 0); ret = 1; } } else { /* - * Keep re-disabling counters even though on the previous + * Keep re-disabling events even though on the previous * pass we disabled it - just in case we raced with a - * sched-in and the counter got enabled again: + * sched-in and the event got enabled again: */ ret = 1; } } - if (counter->attr.freq) { + if (event->attr.freq) { u64 now = perf_clock(); s64 delta = now - hwc->freq_stamp; hwc->freq_stamp = now; if (delta > 0 && delta < TICK_NSEC) - perf_adjust_period(counter, NSEC_PER_SEC / (int)delta); + perf_adjust_period(event, NSEC_PER_SEC / (int)delta); } /* * XXX event_limit might not quite work as expected on inherited - * counters + * events */ - counter->pending_kill = POLL_IN; - if (events && atomic_dec_and_test(&counter->event_limit)) { + event->pending_kill = POLL_IN; + if (events && atomic_dec_and_test(&event->event_limit)) { ret = 1; - counter->pending_kill = POLL_HUP; + event->pending_kill = POLL_HUP; if (nmi) { - counter->pending_disable = 1; - perf_pending_queue(&counter->pending, - perf_pending_counter); + event->pending_disable = 1; + perf_pending_queue(&event->pending, + perf_pending_event); } else - perf_counter_disable(counter); + perf_event_disable(event); } - perf_counter_output(counter, nmi, data, regs); + perf_event_output(event, nmi, data, regs); return ret; } -int perf_counter_overflow(struct perf_counter *counter, int nmi, +int perf_event_overflow(struct perf_event *event, int nmi, struct perf_sample_data *data, struct pt_regs *regs) { - return __perf_counter_overflow(counter, nmi, 1, data, regs); + return __perf_event_overflow(event, nmi, 1, data, regs); } /* - * Generic software counter infrastructure + * Generic software event infrastructure */ /* - * We directly increment counter->count and keep a second value in - * counter->hw.period_left to count intervals. This period counter + * We directly increment event->count and keep a second value in + * event->hw.period_left to count intervals. This period event * is kept in the range [-sample_period, 0] so that we can use the * sign as trigger. */ -static u64 perf_swcounter_set_period(struct perf_counter *counter) +static u64 perf_swevent_set_period(struct perf_event *event) { - struct hw_perf_counter *hwc = &counter->hw; + struct hw_perf_event *hwc = &event->hw; u64 period = hwc->last_period; u64 nr, offset; s64 old, val; @@ -3615,22 +3614,22 @@ again: return nr; } -static void perf_swcounter_overflow(struct perf_counter *counter, +static void perf_swevent_overflow(struct perf_event *event, int nmi, struct perf_sample_data *data, struct pt_regs *regs) { - struct hw_perf_counter *hwc = &counter->hw; + struct hw_perf_event *hwc = &event->hw; int throttle = 0; u64 overflow; - data->period = counter->hw.last_period; - overflow = perf_swcounter_set_period(counter); + data->period = event->hw.last_period; + overflow = perf_swevent_set_period(event); if (hwc->interrupts == MAX_INTERRUPTS) return; for (; overflow; overflow--) { - if (__perf_counter_overflow(counter, nmi, throttle, + if (__perf_event_overflow(event, nmi, throttle, data, regs)) { /* * We inhibit the overflow from happening when @@ -3642,20 +3641,20 @@ static void perf_swcounter_overflow(struct perf_counter *counter, } } -static void perf_swcounter_unthrottle(struct perf_counter *counter) +static void perf_swevent_unthrottle(struct perf_event *event) { /* * Nothing to do, we already reset hwc->interrupts. */ } -static void perf_swcounter_add(struct perf_counter *counter, u64 nr, +static void perf_swevent_add(struct perf_event *event, u64 nr, int nmi, struct perf_sample_data *data, struct pt_regs *regs) { - struct hw_perf_counter *hwc = &counter->hw; + struct hw_perf_event *hwc = &event->hw; - atomic64_add(nr, &counter->count); + atomic64_add(nr, &event->count); if (!hwc->sample_period) return; @@ -3664,29 +3663,29 @@ static void perf_swcounter_add(struct perf_counter *counter, u64 nr, return; if (!atomic64_add_negative(nr, &hwc->period_left)) - perf_swcounter_overflow(counter, nmi, data, regs); + perf_swevent_overflow(event, nmi, data, regs); } -static int perf_swcounter_is_counting(struct perf_counter *counter) +static int perf_swevent_is_counting(struct perf_event *event) { /* - * The counter is active, we're good! + * The event is active, we're good! */ - if (counter->state == PERF_COUNTER_STATE_ACTIVE) + if (event->state == PERF_EVENT_STATE_ACTIVE) return 1; /* - * The counter is off/error, not counting. + * The event is off/error, not counting. */ - if (counter->state != PERF_COUNTER_STATE_INACTIVE) + if (event->state != PERF_EVENT_STATE_INACTIVE) return 0; /* - * The counter is inactive, if the context is active + * The event is inactive, if the context is active * we're part of a group that didn't make it on the 'pmu', * not counting. */ - if (counter->ctx->is_active) + if (event->ctx->is_active) return 0; /* @@ -3697,49 +3696,49 @@ static int perf_swcounter_is_counting(struct perf_counter *counter) return 1; } -static int perf_swcounter_match(struct perf_counter *counter, +static int perf_swevent_match(struct perf_event *event, enum perf_type_id type, - u32 event, struct pt_regs *regs) + u32 event_id, struct pt_regs *regs) { - if (!perf_swcounter_is_counting(counter)) + if (!perf_swevent_is_counting(event)) return 0; - if (counter->attr.type != type) + if (event->attr.type != type) return 0; - if (counter->attr.config != event) + if (event->attr.config != event_id) return 0; if (regs) { - if (counter->attr.exclude_user && user_mode(regs)) + if (event->attr.exclude_user && user_mode(regs)) return 0; - if (counter->attr.exclude_kernel && !user_mode(regs)) + if (event->attr.exclude_kernel && !user_mode(regs)) return 0; } return 1; } -static void perf_swcounter_ctx_event(struct perf_counter_context *ctx, +static void perf_swevent_ctx_event(struct perf_event_context *ctx, enum perf_type_id type, - u32 event, u64 nr, int nmi, + u32 event_id, u64 nr, int nmi, struct perf_sample_data *data, struct pt_regs *regs) { - struct perf_counter *counter; + struct perf_event *event; if (system_state != SYSTEM_RUNNING || list_empty(&ctx->event_list)) return; rcu_read_lock(); - list_for_each_entry_rcu(counter, &ctx->event_list, event_entry) { - if (perf_swcounter_match(counter, type, event, regs)) - perf_swcounter_add(counter, nr, nmi, data, regs); + list_for_each_entry_rcu(event, &ctx->event_list, event_entry) { + if (perf_swevent_match(event, type, event_id, regs)) + perf_swevent_add(event, nr, nmi, data, regs); } rcu_read_unlock(); } -static int *perf_swcounter_recursion_context(struct perf_cpu_context *cpuctx) +static int *perf_swevent_recursion_context(struct perf_cpu_context *cpuctx) { if (in_nmi()) return &cpuctx->recursion[3]; @@ -3753,14 +3752,14 @@ static int *perf_swcounter_recursion_context(struct perf_cpu_context *cpuctx) return &cpuctx->recursion[0]; } -static void do_perf_swcounter_event(enum perf_type_id type, u32 event, +static void do_perf_sw_event(enum perf_type_id type, u32 event_id, u64 nr, int nmi, struct perf_sample_data *data, struct pt_regs *regs) { struct perf_cpu_context *cpuctx = &get_cpu_var(perf_cpu_context); - int *recursion = perf_swcounter_recursion_context(cpuctx); - struct perf_counter_context *ctx; + int *recursion = perf_swevent_recursion_context(cpuctx); + struct perf_event_context *ctx; if (*recursion) goto out; @@ -3768,16 +3767,16 @@ static void do_perf_swcounter_event(enum perf_type_id type, u32 event, (*recursion)++; barrier(); - perf_swcounter_ctx_event(&cpuctx->ctx, type, event, + perf_swevent_ctx_event(&cpuctx->ctx, type, event_id, nr, nmi, data, regs); rcu_read_lock(); /* * doesn't really matter which of the child contexts the * events ends up in. */ - ctx = rcu_dereference(current->perf_counter_ctxp); + ctx = rcu_dereference(current->perf_event_ctxp); if (ctx) - perf_swcounter_ctx_event(ctx, type, event, nr, nmi, data, regs); + perf_swevent_ctx_event(ctx, type, event_id, nr, nmi, data, regs); rcu_read_unlock(); barrier(); @@ -3787,57 +3786,57 @@ out: put_cpu_var(perf_cpu_context); } -void __perf_swcounter_event(u32 event, u64 nr, int nmi, +void __perf_sw_event(u32 event_id, u64 nr, int nmi, struct pt_regs *regs, u64 addr) { struct perf_sample_data data = { .addr = addr, }; - do_perf_swcounter_event(PERF_TYPE_SOFTWARE, event, nr, nmi, + do_perf_sw_event(PERF_TYPE_SOFTWARE, event_id, nr, nmi, &data, regs); } -static void perf_swcounter_read(struct perf_counter *counter) +static void perf_swevent_read(struct perf_event *event) { } -static int perf_swcounter_enable(struct perf_counter *counter) +static int perf_swevent_enable(struct perf_event *event) { - struct hw_perf_counter *hwc = &counter->hw; + struct hw_perf_event *hwc = &event->hw; if (hwc->sample_period) { hwc->last_period = hwc->sample_period; - perf_swcounter_set_period(counter); + perf_swevent_set_period(event); } return 0; } -static void perf_swcounter_disable(struct perf_counter *counter) +static void perf_swevent_disable(struct perf_event *event) { } static const struct pmu perf_ops_generic = { - .enable = perf_swcounter_enable, - .disable = perf_swcounter_disable, - .read = perf_swcounter_read, - .unthrottle = perf_swcounter_unthrottle, + .enable = perf_swevent_enable, + .disable = perf_swevent_disable, + .read = perf_swevent_read, + .unthrottle = perf_swevent_unthrottle, }; /* - * hrtimer based swcounter callback + * hrtimer based swevent callback */ -static enum hrtimer_restart perf_swcounter_hrtimer(struct hrtimer *hrtimer) +static enum hrtimer_restart perf_swevent_hrtimer(struct hrtimer *hrtimer) { enum hrtimer_restart ret = HRTIMER_RESTART; struct perf_sample_data data; struct pt_regs *regs; - struct perf_counter *counter; + struct perf_event *event; u64 period; - counter = container_of(hrtimer, struct perf_counter, hw.hrtimer); - counter->pmu->read(counter); + event = container_of(hrtimer, struct perf_event, hw.hrtimer); + event->pmu->read(event); data.addr = 0; regs = get_irq_regs(); @@ -3845,45 +3844,45 @@ static enum hrtimer_restart perf_swcounter_hrtimer(struct hrtimer *hrtimer) * In case we exclude kernel IPs or are somehow not in interrupt * context, provide the next best thing, the user IP. */ - if ((counter->attr.exclude_kernel || !regs) && - !counter->attr.exclude_user) + if ((event->attr.exclude_kernel || !regs) && + !event->attr.exclude_user) regs = task_pt_regs(current); if (regs) { - if (perf_counter_overflow(counter, 0, &data, regs)) + if (perf_event_overflow(event, 0, &data, regs)) ret = HRTIMER_NORESTART; } - period = max_t(u64, 10000, counter->hw.sample_period); + period = max_t(u64, 10000, event->hw.sample_period); hrtimer_forward_now(hrtimer, ns_to_ktime(period)); return ret; } /* - * Software counter: cpu wall time clock + * Software event: cpu wall time clock */ -static void cpu_clock_perf_counter_update(struct perf_counter *counter) +static void cpu_clock_perf_event_update(struct perf_event *event) { int cpu = raw_smp_processor_id(); s64 prev; u64 now; now = cpu_clock(cpu); - prev = atomic64_read(&counter->hw.prev_count); - atomic64_set(&counter->hw.prev_count, now); - atomic64_add(now - prev, &counter->count); + prev = atomic64_read(&event->hw.prev_count); + atomic64_set(&event->hw.prev_count, now); + atomic64_add(now - prev, &event->count); } -static int cpu_clock_perf_counter_enable(struct perf_counter *counter) +static int cpu_clock_perf_event_enable(struct perf_event *event) { - struct hw_perf_counter *hwc = &counter->hw; + struct hw_perf_event *hwc = &event->hw; int cpu = raw_smp_processor_id(); atomic64_set(&hwc->prev_count, cpu_clock(cpu)); hrtimer_init(&hwc->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); - hwc->hrtimer.function = perf_swcounter_hrtimer; + hwc->hrtimer.function = perf_swevent_hrtimer; if (hwc->sample_period) { u64 period = max_t(u64, 10000, hwc->sample_period); __hrtimer_start_range_ns(&hwc->hrtimer, @@ -3894,48 +3893,48 @@ static int cpu_clock_perf_counter_enable(struct perf_counter *counter) return 0; } -static void cpu_clock_perf_counter_disable(struct perf_counter *counter) +static void cpu_clock_perf_event_disable(struct perf_event *event) { - if (counter->hw.sample_period) - hrtimer_cancel(&counter->hw.hrtimer); - cpu_clock_perf_counter_update(counter); + if (event->hw.sample_period) + hrtimer_cancel(&event->hw.hrtimer); + cpu_clock_perf_event_update(event); } -static void cpu_clock_perf_counter_read(struct perf_counter *counter) +static void cpu_clock_perf_event_read(struct perf_event *event) { - cpu_clock_perf_counter_update(counter); + cpu_clock_perf_event_update(event); } static const struct pmu perf_ops_cpu_clock = { - .enable = cpu_clock_perf_counter_enable, - .disable = cpu_clock_perf_counter_disable, - .read = cpu_clock_perf_counter_read, + .enable = cpu_clock_perf_event_enable, + .disable = cpu_clock_perf_event_disable, + .read = cpu_clock_perf_event_read, }; /* - * Software counter: task time clock + * Software event: task time clock */ -static void task_clock_perf_counter_update(struct perf_counter *counter, u64 now) +static void task_clock_perf_event_update(struct perf_event *event, u64 now) { u64 prev; s64 delta; - prev = atomic64_xchg(&counter->hw.prev_count, now); + prev = atomic64_xchg(&event->hw.prev_count, now); delta = now - prev; - atomic64_add(delta, &counter->count); + atomic64_add(delta, &event->count); } -static int task_clock_perf_counter_enable(struct perf_counter *counter) +static int task_clock_perf_event_enable(struct perf_event *event) { - struct hw_perf_counter *hwc = &counter->hw; + struct hw_perf_event *hwc = &event->hw; u64 now; - now = counter->ctx->time; + now = event->ctx->time; atomic64_set(&hwc->prev_count, now); hrtimer_init(&hwc->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); - hwc->hrtimer.function = perf_swcounter_hrtimer; + hwc->hrtimer.function = perf_swevent_hrtimer; if (hwc->sample_period) { u64 period = max_t(u64, 10000, hwc->sample_period); __hrtimer_start_range_ns(&hwc->hrtimer, @@ -3946,38 +3945,38 @@ static int task_clock_perf_counter_enable(struct perf_counter *counter) return 0; } -static void task_clock_perf_counter_disable(struct perf_counter *counter) +static void task_clock_perf_event_disable(struct perf_event *event) { - if (counter->hw.sample_period) - hrtimer_cancel(&counter->hw.hrtimer); - task_clock_perf_counter_update(counter, counter->ctx->time); + if (event->hw.sample_period) + hrtimer_cancel(&event->hw.hrtimer); + task_clock_perf_event_update(event, event->ctx->time); } -static void task_clock_perf_counter_read(struct perf_counter *counter) +static void task_clock_perf_event_read(struct perf_event *event) { u64 time; if (!in_nmi()) { - update_context_time(counter->ctx); - time = counter->ctx->time; + update_context_time(event->ctx); + time = event->ctx->time; } else { u64 now = perf_clock(); - u64 delta = now - counter->ctx->timestamp; - time = counter->ctx->time + delta; + u64 delta = now - event->ctx->timestamp; + time = event->ctx->time + delta; } - task_clock_perf_counter_update(counter, time); + task_clock_perf_event_update(event, time); } static const struct pmu perf_ops_task_clock = { - .enable = task_clock_perf_counter_enable, - .disable = task_clock_perf_counter_disable, - .read = task_clock_perf_counter_read, + .enable = task_clock_perf_event_enable, + .disable = task_clock_perf_event_disable, + .read = task_clock_perf_event_read, }; #ifdef CONFIG_EVENT_PROFILE -void perf_tpcounter_event(int event_id, u64 addr, u64 count, void *record, +void perf_tp_event(int event_id, u64 addr, u64 count, void *record, int entry_size) { struct perf_raw_record raw = { @@ -3995,78 +3994,78 @@ void perf_tpcounter_event(int event_id, u64 addr, u64 count, void *record, if (!regs) regs = task_pt_regs(current); - do_perf_swcounter_event(PERF_TYPE_TRACEPOINT, event_id, count, 1, + do_perf_sw_event(PERF_TYPE_TRACEPOINT, event_id, count, 1, &data, regs); } -EXPORT_SYMBOL_GPL(perf_tpcounter_event); +EXPORT_SYMBOL_GPL(perf_tp_event); extern int ftrace_profile_enable(int); extern void ftrace_profile_disable(int); -static void tp_perf_counter_destroy(struct perf_counter *counter) +static void tp_perf_event_destroy(struct perf_event *event) { - ftrace_profile_disable(counter->attr.config); + ftrace_profile_disable(event->attr.config); } -static const struct pmu *tp_perf_counter_init(struct perf_counter *counter) +static const struct pmu *tp_perf_event_init(struct perf_event *event) { /* * Raw tracepoint data is a severe data leak, only allow root to * have these. */ - if ((counter->attr.sample_type & PERF_SAMPLE_RAW) && + if ((event->attr.sample_type & PERF_SAMPLE_RAW) && perf_paranoid_tracepoint_raw() && !capable(CAP_SYS_ADMIN)) return ERR_PTR(-EPERM); - if (ftrace_profile_enable(counter->attr.config)) + if (ftrace_profile_enable(event->attr.config)) return NULL; - counter->destroy = tp_perf_counter_destroy; + event->destroy = tp_perf_event_destroy; return &perf_ops_generic; } #else -static const struct pmu *tp_perf_counter_init(struct perf_counter *counter) +static const struct pmu *tp_perf_event_init(struct perf_event *event) { return NULL; } #endif -atomic_t perf_swcounter_enabled[PERF_COUNT_SW_MAX]; +atomic_t perf_swevent_enabled[PERF_COUNT_SW_MAX]; -static void sw_perf_counter_destroy(struct perf_counter *counter) +static void sw_perf_event_destroy(struct perf_event *event) { - u64 event = counter->attr.config; + u64 event_id = event->attr.config; - WARN_ON(counter->parent); + WARN_ON(event->parent); - atomic_dec(&perf_swcounter_enabled[event]); + atomic_dec(&perf_swevent_enabled[event_id]); } -static const struct pmu *sw_perf_counter_init(struct perf_counter *counter) +static const struct pmu *sw_perf_event_init(struct perf_event *event) { const struct pmu *pmu = NULL; - u64 event = counter->attr.config; + u64 event_id = event->attr.config; /* - * Software counters (currently) can't in general distinguish + * Software events (currently) can't in general distinguish * between user, kernel and hypervisor events. * However, context switches and cpu migrations are considered * to be kernel events, and page faults are never hypervisor * events. */ - switch (event) { + switch (event_id) { case PERF_COUNT_SW_CPU_CLOCK: pmu = &perf_ops_cpu_clock; break; case PERF_COUNT_SW_TASK_CLOCK: /* - * If the user instantiates this as a per-cpu counter, - * use the cpu_clock counter instead. + * If the user instantiates this as a per-cpu event, + * use the cpu_clock event instead. */ - if (counter->ctx->task) + if (event->ctx->task) pmu = &perf_ops_task_clock; else pmu = &perf_ops_cpu_clock; @@ -4077,9 +4076,9 @@ static const struct pmu *sw_perf_counter_init(struct perf_counter *counter) case PERF_COUNT_SW_PAGE_FAULTS_MAJ: case PERF_COUNT_SW_CONTEXT_SWITCHES: case PERF_COUNT_SW_CPU_MIGRATIONS: - if (!counter->parent) { - atomic_inc(&perf_swcounter_enabled[event]); - counter->destroy = sw_perf_counter_destroy; + if (!event->parent) { + atomic_inc(&perf_swevent_enabled[event_id]); + event->destroy = sw_perf_event_destroy; } pmu = &perf_ops_generic; break; @@ -4089,62 +4088,62 @@ static const struct pmu *sw_perf_counter_init(struct perf_counter *counter) } /* - * Allocate and initialize a counter structure + * Allocate and initialize a event structure */ -static struct perf_counter * -perf_counter_alloc(struct perf_counter_attr *attr, +static struct perf_event * +perf_event_alloc(struct perf_event_attr *attr, int cpu, - struct perf_counter_context *ctx, - struct perf_counter *group_leader, - struct perf_counter *parent_counter, + struct perf_event_context *ctx, + struct perf_event *group_leader, + struct perf_event *parent_event, gfp_t gfpflags) { const struct pmu *pmu; - struct perf_counter *counter; - struct hw_perf_counter *hwc; + struct perf_event *event; + struct hw_perf_event *hwc; long err; - counter = kzalloc(sizeof(*counter), gfpflags); - if (!counter) + event = kzalloc(sizeof(*event), gfpflags); + if (!event) return ERR_PTR(-ENOMEM); /* - * Single counters are their own group leaders, with an + * Single events are their own group leaders, with an * empty sibling list: */ if (!group_leader) - group_leader = counter; + group_leader = event; - mutex_init(&counter->child_mutex); - INIT_LIST_HEAD(&counter->child_list); + mutex_init(&event->child_mutex); + INIT_LIST_HEAD(&event->child_list); - INIT_LIST_HEAD(&counter->list_entry); - INIT_LIST_HEAD(&counter->event_entry); - INIT_LIST_HEAD(&counter->sibling_list); - init_waitqueue_head(&counter->waitq); + INIT_LIST_HEAD(&event->group_entry); + INIT_LIST_HEAD(&event->event_entry); + INIT_LIST_HEAD(&event->sibling_list); + init_waitqueue_head(&event->waitq); - mutex_init(&counter->mmap_mutex); + mutex_init(&event->mmap_mutex); - counter->cpu = cpu; - counter->attr = *attr; - counter->group_leader = group_leader; - counter->pmu = NULL; - counter->ctx = ctx; - counter->oncpu = -1; + event->cpu = cpu; + event->attr = *attr; + event->group_leader = group_leader; + event->pmu = NULL; + event->ctx = ctx; + event->oncpu = -1; - counter->parent = parent_counter; + event->parent = parent_event; - counter->ns = get_pid_ns(current->nsproxy->pid_ns); - counter->id = atomic64_inc_return(&perf_counter_id); + event->ns = get_pid_ns(current->nsproxy->pid_ns); + event->id = atomic64_inc_return(&perf_event_id); - counter->state = PERF_COUNTER_STATE_INACTIVE; + event->state = PERF_EVENT_STATE_INACTIVE; if (attr->disabled) - counter->state = PERF_COUNTER_STATE_OFF; + event->state = PERF_EVENT_STATE_OFF; pmu = NULL; - hwc = &counter->hw; + hwc = &event->hw; hwc->sample_period = attr->sample_period; if (attr->freq && attr->sample_freq) hwc->sample_period = 1; @@ -4153,7 +4152,7 @@ perf_counter_alloc(struct perf_counter_attr *attr, atomic64_set(&hwc->period_left, hwc->sample_period); /* - * we currently do not support PERF_FORMAT_GROUP on inherited counters + * we currently do not support PERF_FORMAT_GROUP on inherited events */ if (attr->inherit && (attr->read_format & PERF_FORMAT_GROUP)) goto done; @@ -4162,15 +4161,15 @@ perf_counter_alloc(struct perf_counter_attr *attr, case PERF_TYPE_RAW: case PERF_TYPE_HARDWARE: case PERF_TYPE_HW_CACHE: - pmu = hw_perf_counter_init(counter); + pmu = hw_perf_event_init(event); break; case PERF_TYPE_SOFTWARE: - pmu = sw_perf_counter_init(counter); + pmu = sw_perf_event_init(event); break; case PERF_TYPE_TRACEPOINT: - pmu = tp_perf_counter_init(counter); + pmu = tp_perf_event_init(event); break; default: @@ -4184,29 +4183,29 @@ done: err = PTR_ERR(pmu); if (err) { - if (counter->ns) - put_pid_ns(counter->ns); - kfree(counter); + if (event->ns) + put_pid_ns(event->ns); + kfree(event); return ERR_PTR(err); } - counter->pmu = pmu; + event->pmu = pmu; - if (!counter->parent) { - atomic_inc(&nr_counters); - if (counter->attr.mmap) - atomic_inc(&nr_mmap_counters); - if (counter->attr.comm) - atomic_inc(&nr_comm_counters); - if (counter->attr.task) - atomic_inc(&nr_task_counters); + if (!event->parent) { + atomic_inc(&nr_events); + if (event->attr.mmap) + atomic_inc(&nr_mmap_events); + if (event->attr.comm) + atomic_inc(&nr_comm_events); + if (event->attr.task) + atomic_inc(&nr_task_events); } - return counter; + return event; } -static int perf_copy_attr(struct perf_counter_attr __user *uattr, - struct perf_counter_attr *attr) +static int perf_copy_attr(struct perf_event_attr __user *uattr, + struct perf_event_attr *attr) { u32 size; int ret; @@ -4285,11 +4284,11 @@ err_size: goto out; } -int perf_counter_set_output(struct perf_counter *counter, int output_fd) +int perf_event_set_output(struct perf_event *event, int output_fd) { - struct perf_counter *output_counter = NULL; + struct perf_event *output_event = NULL; struct file *output_file = NULL; - struct perf_counter *old_output; + struct perf_event *old_output; int fput_needed = 0; int ret = -EINVAL; @@ -4303,28 +4302,28 @@ int perf_counter_set_output(struct perf_counter *counter, int output_fd) if (output_file->f_op != &perf_fops) goto out; - output_counter = output_file->private_data; + output_event = output_file->private_data; /* Don't chain output fds */ - if (output_counter->output) + if (output_event->output) goto out; /* Don't set an output fd when we already have an output channel */ - if (counter->data) + if (event->data) goto out; atomic_long_inc(&output_file->f_count); set: - mutex_lock(&counter->mmap_mutex); - old_output = counter->output; - rcu_assign_pointer(counter->output, output_counter); - mutex_unlock(&counter->mmap_mutex); + mutex_lock(&event->mmap_mutex); + old_output = event->output; + rcu_assign_pointer(event->output, output_event); + mutex_unlock(&event->mmap_mutex); if (old_output) { /* * we need to make sure no existing perf_output_*() - * is still referencing this counter. + * is still referencing this event. */ synchronize_rcu(); fput(old_output->filp); @@ -4337,21 +4336,21 @@ out: } /** - * sys_perf_counter_open - open a performance counter, associate it to a task/cpu + * sys_perf_event_open - open a performance event, associate it to a task/cpu * - * @attr_uptr: event type attributes for monitoring/sampling + * @attr_uptr: event_id type attributes for monitoring/sampling * @pid: target pid * @cpu: target cpu - * @group_fd: group leader counter fd + * @group_fd: group leader event fd */ -SYSCALL_DEFINE5(perf_counter_open, - struct perf_counter_attr __user *, attr_uptr, +SYSCALL_DEFINE5(perf_event_open, + struct perf_event_attr __user *, attr_uptr, pid_t, pid, int, cpu, int, group_fd, unsigned long, flags) { - struct perf_counter *counter, *group_leader; - struct perf_counter_attr attr; - struct perf_counter_context *ctx; - struct file *counter_file = NULL; + struct perf_event *event, *group_leader; + struct perf_event_attr attr; + struct perf_event_context *ctx; + struct file *event_file = NULL; struct file *group_file = NULL; int fput_needed = 0; int fput_needed2 = 0; @@ -4371,7 +4370,7 @@ SYSCALL_DEFINE5(perf_counter_open, } if (attr.freq) { - if (attr.sample_freq > sysctl_perf_counter_sample_rate) + if (attr.sample_freq > sysctl_perf_event_sample_rate) return -EINVAL; } @@ -4383,7 +4382,7 @@ SYSCALL_DEFINE5(perf_counter_open, return PTR_ERR(ctx); /* - * Look up the group leader (we will attach this counter to it): + * Look up the group leader (we will attach this event to it): */ group_leader = NULL; if (group_fd != -1 && !(flags & PERF_FLAG_FD_NO_GROUP)) { @@ -4414,45 +4413,45 @@ SYSCALL_DEFINE5(perf_counter_open, goto err_put_context; } - counter = perf_counter_alloc(&attr, cpu, ctx, group_leader, + event = perf_event_alloc(&attr, cpu, ctx, group_leader, NULL, GFP_KERNEL); - err = PTR_ERR(counter); - if (IS_ERR(counter)) + err = PTR_ERR(event); + if (IS_ERR(event)) goto err_put_context; - err = anon_inode_getfd("[perf_counter]", &perf_fops, counter, 0); + err = anon_inode_getfd("[perf_event]", &perf_fops, event, 0); if (err < 0) goto err_free_put_context; - counter_file = fget_light(err, &fput_needed2); - if (!counter_file) + event_file = fget_light(err, &fput_needed2); + if (!event_file) goto err_free_put_context; if (flags & PERF_FLAG_FD_OUTPUT) { - err = perf_counter_set_output(counter, group_fd); + err = perf_event_set_output(event, group_fd); if (err) goto err_fput_free_put_context; } - counter->filp = counter_file; + event->filp = event_file; WARN_ON_ONCE(ctx->parent_ctx); mutex_lock(&ctx->mutex); - perf_install_in_context(ctx, counter, cpu); + perf_install_in_context(ctx, event, cpu); ++ctx->generation; mutex_unlock(&ctx->mutex); - counter->owner = current; + event->owner = current; get_task_struct(current); - mutex_lock(¤t->perf_counter_mutex); - list_add_tail(&counter->owner_entry, ¤t->perf_counter_list); - mutex_unlock(¤t->perf_counter_mutex); + mutex_lock(¤t->perf_event_mutex); + list_add_tail(&event->owner_entry, ¤t->perf_event_list); + mutex_unlock(¤t->perf_event_mutex); err_fput_free_put_context: - fput_light(counter_file, fput_needed2); + fput_light(event_file, fput_needed2); err_free_put_context: if (err < 0) - kfree(counter); + kfree(event); err_put_context: if (err < 0) @@ -4464,88 +4463,88 @@ err_put_context: } /* - * inherit a counter from parent task to child task: + * inherit a event from parent task to child task: */ -static struct perf_counter * -inherit_counter(struct perf_counter *parent_counter, +static struct perf_event * +inherit_event(struct perf_event *parent_event, struct task_struct *parent, - struct perf_counter_context *parent_ctx, + struct perf_event_context *parent_ctx, struct task_struct *child, - struct perf_counter *group_leader, - struct perf_counter_context *child_ctx) + struct perf_event *group_leader, + struct perf_event_context *child_ctx) { - struct perf_counter *child_counter; + struct perf_event *child_event; /* - * Instead of creating recursive hierarchies of counters, - * we link inherited counters back to the original parent, + * Instead of creating recursive hierarchies of events, + * we link inherited events back to the original parent, * which has a filp for sure, which we use as the reference * count: */ - if (parent_counter->parent) - parent_counter = parent_counter->parent; + if (parent_event->parent) + parent_event = parent_event->parent; - child_counter = perf_counter_alloc(&parent_counter->attr, - parent_counter->cpu, child_ctx, - group_leader, parent_counter, + child_event = perf_event_alloc(&parent_event->attr, + parent_event->cpu, child_ctx, + group_leader, parent_event, GFP_KERNEL); - if (IS_ERR(child_counter)) - return child_counter; + if (IS_ERR(child_event)) + return child_event; get_ctx(child_ctx); /* - * Make the child state follow the state of the parent counter, + * Make the child state follow the state of the parent event, * not its attr.disabled bit. We hold the parent's mutex, - * so we won't race with perf_counter_{en, dis}able_family. + * so we won't race with perf_event_{en, dis}able_family. */ - if (parent_counter->state >= PERF_COUNTER_STATE_INACTIVE) - child_counter->state = PERF_COUNTER_STATE_INACTIVE; + if (parent_event->state >= PERF_EVENT_STATE_INACTIVE) + child_event->state = PERF_EVENT_STATE_INACTIVE; else - child_counter->state = PERF_COUNTER_STATE_OFF; + child_event->state = PERF_EVENT_STATE_OFF; - if (parent_counter->attr.freq) - child_counter->hw.sample_period = parent_counter->hw.sample_period; + if (parent_event->attr.freq) + child_event->hw.sample_period = parent_event->hw.sample_period; /* * Link it up in the child's context: */ - add_counter_to_ctx(child_counter, child_ctx); + add_event_to_ctx(child_event, child_ctx); /* * Get a reference to the parent filp - we will fput it - * when the child counter exits. This is safe to do because + * when the child event exits. This is safe to do because * we are in the parent and we know that the filp still * exists and has a nonzero count: */ - atomic_long_inc(&parent_counter->filp->f_count); + atomic_long_inc(&parent_event->filp->f_count); /* - * Link this into the parent counter's child list + * Link this into the parent event's child list */ - WARN_ON_ONCE(parent_counter->ctx->parent_ctx); - mutex_lock(&parent_counter->child_mutex); - list_add_tail(&child_counter->child_list, &parent_counter->child_list); - mutex_unlock(&parent_counter->child_mutex); + WARN_ON_ONCE(parent_event->ctx->parent_ctx); + mutex_lock(&parent_event->child_mutex); + list_add_tail(&child_event->child_list, &parent_event->child_list); + mutex_unlock(&parent_event->child_mutex); - return child_counter; + return child_event; } -static int inherit_group(struct perf_counter *parent_counter, +static int inherit_group(struct perf_event *parent_event, struct task_struct *parent, - struct perf_counter_context *parent_ctx, + struct perf_event_context *parent_ctx, struct task_struct *child, - struct perf_counter_context *child_ctx) + struct perf_event_context *child_ctx) { - struct perf_counter *leader; - struct perf_counter *sub; - struct perf_counter *child_ctr; + struct perf_event *leader; + struct perf_event *sub; + struct perf_event *child_ctr; - leader = inherit_counter(parent_counter, parent, parent_ctx, + leader = inherit_event(parent_event, parent, parent_ctx, child, NULL, child_ctx); if (IS_ERR(leader)) return PTR_ERR(leader); - list_for_each_entry(sub, &parent_counter->sibling_list, list_entry) { - child_ctr = inherit_counter(sub, parent, parent_ctx, + list_for_each_entry(sub, &parent_event->sibling_list, group_entry) { + child_ctr = inherit_event(sub, parent, parent_ctx, child, leader, child_ctx); if (IS_ERR(child_ctr)) return PTR_ERR(child_ctr); @@ -4553,74 +4552,74 @@ static int inherit_group(struct perf_counter *parent_counter, return 0; } -static void sync_child_counter(struct perf_counter *child_counter, +static void sync_child_event(struct perf_event *child_event, struct task_struct *child) { - struct perf_counter *parent_counter = child_counter->parent; + struct perf_event *parent_event = child_event->parent; u64 child_val; - if (child_counter->attr.inherit_stat) - perf_counter_read_event(child_counter, child); + if (child_event->attr.inherit_stat) + perf_event_read_event(child_event, child); - child_val = atomic64_read(&child_counter->count); + child_val = atomic64_read(&child_event->count); /* * Add back the child's count to the parent's count: */ - atomic64_add(child_val, &parent_counter->count); - atomic64_add(child_counter->total_time_enabled, - &parent_counter->child_total_time_enabled); - atomic64_add(child_counter->total_time_running, - &parent_counter->child_total_time_running); + atomic64_add(child_val, &parent_event->count); + atomic64_add(child_event->total_time_enabled, + &parent_event->child_total_time_enabled); + atomic64_add(child_event->total_time_running, + &parent_event->child_total_time_running); /* - * Remove this counter from the parent's list + * Remove this event from the parent's list */ - WARN_ON_ONCE(parent_counter->ctx->parent_ctx); - mutex_lock(&parent_counter->child_mutex); - list_del_init(&child_counter->child_list); - mutex_unlock(&parent_counter->child_mutex); + WARN_ON_ONCE(parent_event->ctx->parent_ctx); + mutex_lock(&parent_event->child_mutex); + list_del_init(&child_event->child_list); + mutex_unlock(&parent_event->child_mutex); /* - * Release the parent counter, if this was the last + * Release the parent event, if this was the last * reference to it. */ - fput(parent_counter->filp); + fput(parent_event->filp); } static void -__perf_counter_exit_task(struct perf_counter *child_counter, - struct perf_counter_context *child_ctx, +__perf_event_exit_task(struct perf_event *child_event, + struct perf_event_context *child_ctx, struct task_struct *child) { - struct perf_counter *parent_counter; + struct perf_event *parent_event; - update_counter_times(child_counter); - perf_counter_remove_from_context(child_counter); + update_event_times(child_event); + perf_event_remove_from_context(child_event); - parent_counter = child_counter->parent; + parent_event = child_event->parent; /* - * It can happen that parent exits first, and has counters + * It can happen that parent exits first, and has events * that are still around due to the child reference. These - * counters need to be zapped - but otherwise linger. + * events need to be zapped - but otherwise linger. */ - if (parent_counter) { - sync_child_counter(child_counter, child); - free_counter(child_counter); + if (parent_event) { + sync_child_event(child_event, child); + free_event(child_event); } } /* - * When a child task exits, feed back counter values to parent counters. + * When a child task exits, feed back event values to parent events. */ -void perf_counter_exit_task(struct task_struct *child) +void perf_event_exit_task(struct task_struct *child) { - struct perf_counter *child_counter, *tmp; - struct perf_counter_context *child_ctx; + struct perf_event *child_event, *tmp; + struct perf_event_context *child_ctx; unsigned long flags; - if (likely(!child->perf_counter_ctxp)) { - perf_counter_task(child, NULL, 0); + if (likely(!child->perf_event_ctxp)) { + perf_event_task(child, NULL, 0); return; } @@ -4631,37 +4630,37 @@ void perf_counter_exit_task(struct task_struct *child) * scheduled, so we are now safe from rescheduling changing * our context. */ - child_ctx = child->perf_counter_ctxp; - __perf_counter_task_sched_out(child_ctx); + child_ctx = child->perf_event_ctxp; + __perf_event_task_sched_out(child_ctx); /* * Take the context lock here so that if find_get_context is - * reading child->perf_counter_ctxp, we wait until it has + * reading child->perf_event_ctxp, we wait until it has * incremented the context's refcount before we do put_ctx below. */ spin_lock(&child_ctx->lock); - child->perf_counter_ctxp = NULL; + child->perf_event_ctxp = NULL; /* * If this context is a clone; unclone it so it can't get * swapped to another process while we're removing all - * the counters from it. + * the events from it. */ unclone_ctx(child_ctx); spin_unlock_irqrestore(&child_ctx->lock, flags); /* - * Report the task dead after unscheduling the counters so that we - * won't get any samples after PERF_EVENT_EXIT. We can however still - * get a few PERF_EVENT_READ events. + * Report the task dead after unscheduling the events so that we + * won't get any samples after PERF_RECORD_EXIT. We can however still + * get a few PERF_RECORD_READ events. */ - perf_counter_task(child, child_ctx, 0); + perf_event_task(child, child_ctx, 0); /* * We can recurse on the same lock type through: * - * __perf_counter_exit_task() - * sync_child_counter() - * fput(parent_counter->filp) + * __perf_event_exit_task() + * sync_child_event() + * fput(parent_event->filp) * perf_release() * mutex_lock(&ctx->mutex) * @@ -4670,16 +4669,16 @@ void perf_counter_exit_task(struct task_struct *child) mutex_lock_nested(&child_ctx->mutex, SINGLE_DEPTH_NESTING); again: - list_for_each_entry_safe(child_counter, tmp, &child_ctx->counter_list, - list_entry) - __perf_counter_exit_task(child_counter, child_ctx, child); + list_for_each_entry_safe(child_event, tmp, &child_ctx->group_list, + group_entry) + __perf_event_exit_task(child_event, child_ctx, child); /* - * If the last counter was a group counter, it will have appended all + * If the last event was a group event, it will have appended all * its siblings to the list, but we obtained 'tmp' before that which * will still point to the list head terminating the iteration. */ - if (!list_empty(&child_ctx->counter_list)) + if (!list_empty(&child_ctx->group_list)) goto again; mutex_unlock(&child_ctx->mutex); @@ -4691,33 +4690,33 @@ again: * free an unexposed, unused context as created by inheritance by * init_task below, used by fork() in case of fail. */ -void perf_counter_free_task(struct task_struct *task) +void perf_event_free_task(struct task_struct *task) { - struct perf_counter_context *ctx = task->perf_counter_ctxp; - struct perf_counter *counter, *tmp; + struct perf_event_context *ctx = task->perf_event_ctxp; + struct perf_event *event, *tmp; if (!ctx) return; mutex_lock(&ctx->mutex); again: - list_for_each_entry_safe(counter, tmp, &ctx->counter_list, list_entry) { - struct perf_counter *parent = counter->parent; + list_for_each_entry_safe(event, tmp, &ctx->group_list, group_entry) { + struct perf_event *parent = event->parent; if (WARN_ON_ONCE(!parent)) continue; mutex_lock(&parent->child_mutex); - list_del_init(&counter->child_list); + list_del_init(&event->child_list); mutex_unlock(&parent->child_mutex); fput(parent->filp); - list_del_counter(counter, ctx); - free_counter(counter); + list_del_event(event, ctx); + free_event(event); } - if (!list_empty(&ctx->counter_list)) + if (!list_empty(&ctx->group_list)) goto again; mutex_unlock(&ctx->mutex); @@ -4726,37 +4725,37 @@ again: } /* - * Initialize the perf_counter context in task_struct + * Initialize the perf_event context in task_struct */ -int perf_counter_init_task(struct task_struct *child) +int perf_event_init_task(struct task_struct *child) { - struct perf_counter_context *child_ctx, *parent_ctx; - struct perf_counter_context *cloned_ctx; - struct perf_counter *counter; + struct perf_event_context *child_ctx, *parent_ctx; + struct perf_event_context *cloned_ctx; + struct perf_event *event; struct task_struct *parent = current; int inherited_all = 1; int ret = 0; - child->perf_counter_ctxp = NULL; + child->perf_event_ctxp = NULL; - mutex_init(&child->perf_counter_mutex); - INIT_LIST_HEAD(&child->perf_counter_list); + mutex_init(&child->perf_event_mutex); + INIT_LIST_HEAD(&child->perf_event_list); - if (likely(!parent->perf_counter_ctxp)) + if (likely(!parent->perf_event_ctxp)) return 0; /* * This is executed from the parent task context, so inherit - * counters that have been marked for cloning. + * events that have been marked for cloning. * First allocate and initialize a context for the child. */ - child_ctx = kmalloc(sizeof(struct perf_counter_context), GFP_KERNEL); + child_ctx = kmalloc(sizeof(struct perf_event_context), GFP_KERNEL); if (!child_ctx) return -ENOMEM; - __perf_counter_init_context(child_ctx, child); - child->perf_counter_ctxp = child_ctx; + __perf_event_init_context(child_ctx, child); + child->perf_event_ctxp = child_ctx; get_task_struct(child); /* @@ -4782,16 +4781,16 @@ int perf_counter_init_task(struct task_struct *child) * We dont have to disable NMIs - we are only looking at * the list, not manipulating it: */ - list_for_each_entry_rcu(counter, &parent_ctx->event_list, event_entry) { - if (counter != counter->group_leader) + list_for_each_entry_rcu(event, &parent_ctx->event_list, event_entry) { + if (event != event->group_leader) continue; - if (!counter->attr.inherit) { + if (!event->attr.inherit) { inherited_all = 0; continue; } - ret = inherit_group(counter, parent, parent_ctx, + ret = inherit_group(event, parent, parent_ctx, child, child_ctx); if (ret) { inherited_all = 0; @@ -4805,7 +4804,7 @@ int perf_counter_init_task(struct task_struct *child) * context, or of whatever the parent is a clone of. * Note that if the parent is a clone, it could get * uncloned at any point, but that doesn't matter - * because the list of counters and the generation + * because the list of events and the generation * count can't have changed since we took the mutex. */ cloned_ctx = rcu_dereference(parent_ctx->parent_ctx); @@ -4826,41 +4825,41 @@ int perf_counter_init_task(struct task_struct *child) return ret; } -static void __cpuinit perf_counter_init_cpu(int cpu) +static void __cpuinit perf_event_init_cpu(int cpu) { struct perf_cpu_context *cpuctx; cpuctx = &per_cpu(perf_cpu_context, cpu); - __perf_counter_init_context(&cpuctx->ctx, NULL); + __perf_event_init_context(&cpuctx->ctx, NULL); spin_lock(&perf_resource_lock); - cpuctx->max_pertask = perf_max_counters - perf_reserved_percpu; + cpuctx->max_pertask = perf_max_events - perf_reserved_percpu; spin_unlock(&perf_resource_lock); - hw_perf_counter_setup(cpu); + hw_perf_event_setup(cpu); } #ifdef CONFIG_HOTPLUG_CPU -static void __perf_counter_exit_cpu(void *info) +static void __perf_event_exit_cpu(void *info) { struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context); - struct perf_counter_context *ctx = &cpuctx->ctx; - struct perf_counter *counter, *tmp; + struct perf_event_context *ctx = &cpuctx->ctx; + struct perf_event *event, *tmp; - list_for_each_entry_safe(counter, tmp, &ctx->counter_list, list_entry) - __perf_counter_remove_from_context(counter); + list_for_each_entry_safe(event, tmp, &ctx->group_list, group_entry) + __perf_event_remove_from_context(event); } -static void perf_counter_exit_cpu(int cpu) +static void perf_event_exit_cpu(int cpu) { struct perf_cpu_context *cpuctx = &per_cpu(perf_cpu_context, cpu); - struct perf_counter_context *ctx = &cpuctx->ctx; + struct perf_event_context *ctx = &cpuctx->ctx; mutex_lock(&ctx->mutex); - smp_call_function_single(cpu, __perf_counter_exit_cpu, NULL, 1); + smp_call_function_single(cpu, __perf_event_exit_cpu, NULL, 1); mutex_unlock(&ctx->mutex); } #else -static inline void perf_counter_exit_cpu(int cpu) { } +static inline void perf_event_exit_cpu(int cpu) { } #endif static int __cpuinit @@ -4872,17 +4871,17 @@ perf_cpu_notify(struct notifier_block *self, unsigned long action, void *hcpu) case CPU_UP_PREPARE: case CPU_UP_PREPARE_FROZEN: - perf_counter_init_cpu(cpu); + perf_event_init_cpu(cpu); break; case CPU_ONLINE: case CPU_ONLINE_FROZEN: - hw_perf_counter_setup_online(cpu); + hw_perf_event_setup_online(cpu); break; case CPU_DOWN_PREPARE: case CPU_DOWN_PREPARE_FROZEN: - perf_counter_exit_cpu(cpu); + perf_event_exit_cpu(cpu); break; default: @@ -4900,7 +4899,7 @@ static struct notifier_block __cpuinitdata perf_cpu_nb = { .priority = 20, }; -void __init perf_counter_init(void) +void __init perf_event_init(void) { perf_cpu_notify(&perf_cpu_nb, (unsigned long)CPU_UP_PREPARE, (void *)(long)smp_processor_id()); @@ -4926,7 +4925,7 @@ perf_set_reserve_percpu(struct sysdev_class *class, err = strict_strtoul(buf, 10, &val); if (err) return err; - if (val > perf_max_counters) + if (val > perf_max_events) return -EINVAL; spin_lock(&perf_resource_lock); @@ -4934,8 +4933,8 @@ perf_set_reserve_percpu(struct sysdev_class *class, for_each_online_cpu(cpu) { cpuctx = &per_cpu(perf_cpu_context, cpu); spin_lock_irq(&cpuctx->ctx.lock); - mpt = min(perf_max_counters - cpuctx->ctx.nr_counters, - perf_max_counters - perf_reserved_percpu); + mpt = min(perf_max_events - cpuctx->ctx.nr_events, + perf_max_events - perf_reserved_percpu); cpuctx->max_pertask = mpt; spin_unlock_irq(&cpuctx->ctx.lock); } @@ -4990,12 +4989,12 @@ static struct attribute *perfclass_attrs[] = { static struct attribute_group perfclass_attr_group = { .attrs = perfclass_attrs, - .name = "perf_counters", + .name = "perf_events", }; -static int __init perf_counter_sysfs_init(void) +static int __init perf_event_sysfs_init(void) { return sysfs_create_group(&cpu_sysdev_class.kset.kobj, &perfclass_attr_group); } -device_initcall(perf_counter_sysfs_init); +device_initcall(perf_event_sysfs_init); diff --git a/kernel/sched.c b/kernel/sched.c index 830967e..91843ba 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -39,7 +39,7 @@ #include <linux/completion.h> #include <linux/kernel_stat.h> #include <linux/debug_locks.h> -#include <linux/perf_counter.h> +#include <linux/perf_event.h> #include <linux/security.h> #include <linux/notifier.h> #include <linux/profile.h> @@ -2053,7 +2053,7 @@ void set_task_cpu(struct task_struct *p, unsigned int new_cpu) if (task_hot(p, old_rq->clock, NULL)) schedstat_inc(p, se.nr_forced2_migrations); #endif - perf_swcounter_event(PERF_COUNT_SW_CPU_MIGRATIONS, + perf_sw_event(PERF_COUNT_SW_CPU_MIGRATIONS, 1, 1, NULL, 0); } p->se.vruntime -= old_cfsrq->min_vruntime - @@ -2718,7 +2718,7 @@ static void finish_task_switch(struct rq *rq, struct task_struct *prev) */ prev_state = prev->state; finish_arch_switch(prev); - perf_counter_task_sched_in(current, cpu_of(rq)); + perf_event_task_sched_in(current, cpu_of(rq)); finish_lock_switch(rq, prev); fire_sched_in_preempt_notifiers(current); @@ -5193,7 +5193,7 @@ void scheduler_tick(void) curr->sched_class->task_tick(rq, curr, 0); spin_unlock(&rq->lock); - perf_counter_task_tick(curr, cpu); + perf_event_task_tick(curr, cpu); #ifdef CONFIG_SMP rq->idle_at_tick = idle_cpu(cpu); @@ -5409,7 +5409,7 @@ need_resched_nonpreemptible: if (likely(prev != next)) { sched_info_switch(prev, next); - perf_counter_task_sched_out(prev, next, cpu); + perf_event_task_sched_out(prev, next, cpu); rq->nr_switches++; rq->curr = next; @@ -7671,7 +7671,7 @@ migration_call(struct notifier_block *nfb, unsigned long action, void *hcpu) /* * Register at high priority so that task migration (migrate_all_tasks) * happens before everything else. This has to be lower priority than - * the notifier in the perf_counter subsystem, though. + * the notifier in the perf_event subsystem, though. */ static struct notifier_block __cpuinitdata migration_notifier = { .notifier_call = migration_call, @@ -9528,7 +9528,7 @@ void __init sched_init(void) alloc_cpumask_var(&cpu_isolated_map, GFP_NOWAIT); #endif /* SMP */ - perf_counter_init(); + perf_event_init(); scheduler_running = 1; } diff --git a/kernel/sys.c b/kernel/sys.c index b3f1097..ea5c3bc 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -14,7 +14,7 @@ #include <linux/prctl.h> #include <linux/highuid.h> #include <linux/fs.h> -#include <linux/perf_counter.h> +#include <linux/perf_event.h> #include <linux/resource.h> #include <linux/kernel.h> #include <linux/kexec.h> @@ -1511,11 +1511,11 @@ SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3, case PR_SET_TSC: error = SET_TSC_CTL(arg2); break; - case PR_TASK_PERF_COUNTERS_DISABLE: - error = perf_counter_task_disable(); + case PR_TASK_PERF_EVENTS_DISABLE: + error = perf_event_task_disable(); break; - case PR_TASK_PERF_COUNTERS_ENABLE: - error = perf_counter_task_enable(); + case PR_TASK_PERF_EVENTS_ENABLE: + error = perf_event_task_enable(); break; case PR_GET_TIMERSLACK: error = current->timer_slack_ns; diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c index 68320f6..515bc23 100644 --- a/kernel/sys_ni.c +++ b/kernel/sys_ni.c @@ -177,4 +177,4 @@ cond_syscall(sys_eventfd); cond_syscall(sys_eventfd2); /* performance counters: */ -cond_syscall(sys_perf_counter_open); +cond_syscall(sys_perf_event_open); diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 1a631ba..6ba49c7 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -50,7 +50,7 @@ #include <linux/reboot.h> #include <linux/ftrace.h> #include <linux/slow-work.h> -#include <linux/perf_counter.h> +#include <linux/perf_event.h> #include <asm/uaccess.h> #include <asm/processor.h> @@ -964,28 +964,28 @@ static struct ctl_table kern_table[] = { .child = slow_work_sysctls, }, #endif -#ifdef CONFIG_PERF_COUNTERS +#ifdef CONFIG_PERF_EVENTS { .ctl_name = CTL_UNNUMBERED, - .procname = "perf_counter_paranoid", - .data = &sysctl_perf_counter_paranoid, - .maxlen = sizeof(sysctl_perf_counter_paranoid), + .procname = "perf_event_paranoid", + .data = &sysctl_perf_event_paranoid, + .maxlen = sizeof(sysctl_perf_event_paranoid), .mode = 0644, .proc_handler = &proc_dointvec, }, { .ctl_name = CTL_UNNUMBERED, - .procname = "perf_counter_mlock_kb", - .data = &sysctl_perf_counter_mlock, - .maxlen = sizeof(sysctl_perf_counter_mlock), + .procname = "perf_event_mlock_kb", + .data = &sysctl_perf_event_mlock, + .maxlen = sizeof(sysctl_perf_event_mlock), .mode = 0644, .proc_handler = &proc_dointvec, }, { .ctl_name = CTL_UNNUMBERED, - .procname = "perf_counter_max_sample_rate", - .data = &sysctl_perf_counter_sample_rate, - .maxlen = sizeof(sysctl_perf_counter_sample_rate), + .procname = "perf_event_max_sample_rate", + .data = &sysctl_perf_event_sample_rate, + .maxlen = sizeof(sysctl_perf_event_sample_rate), .mode = 0644, .proc_handler = &proc_dointvec, }, diff --git a/kernel/timer.c b/kernel/timer.c index bbb5107..811e5c3 100644 --- a/kernel/timer.c +++ b/kernel/timer.c @@ -37,7 +37,7 @@ #include <linux/delay.h> #include <linux/tick.h> #include <linux/kallsyms.h> -#include <linux/perf_counter.h> +#include <linux/perf_event.h> #include <linux/sched.h> #include <asm/uaccess.h> @@ -1187,7 +1187,7 @@ static void run_timer_softirq(struct softirq_action *h) { struct tvec_base *base = __get_cpu_var(tvec_bases); - perf_counter_do_pending(); + perf_event_do_pending(); hrtimer_run_pending(); diff --git a/kernel/trace/trace_syscalls.c b/kernel/trace/trace_syscalls.c index 7a3550c..9fbce6c 100644 --- a/kernel/trace/trace_syscalls.c +++ b/kernel/trace/trace_syscalls.c @@ -2,7 +2,7 @@ #include <trace/events/syscalls.h> #include <linux/kernel.h> #include <linux/ftrace.h> -#include <linux/perf_counter.h> +#include <linux/perf_event.h> #include <asm/syscall.h> #include "trace_output.h" @@ -433,7 +433,7 @@ static void prof_syscall_enter(struct pt_regs *regs, long id) rec->nr = syscall_nr; syscall_get_arguments(current, regs, 0, sys_data->nb_args, (unsigned long *)&rec->args); - perf_tpcounter_event(sys_data->enter_id, 0, 1, rec, size); + perf_tp_event(sys_data->enter_id, 0, 1, rec, size); end: local_irq_restore(flags); @@ -532,7 +532,7 @@ static void prof_syscall_exit(struct pt_regs *regs, long ret) rec->nr = syscall_nr; rec->ret = syscall_get_return_value(current, regs); - perf_tpcounter_event(sys_data->exit_id, 0, 1, rec, size); + perf_tp_event(sys_data->exit_id, 0, 1, rec, size); end: local_irq_restore(flags); @@ -28,7 +28,7 @@ #include <linux/mempolicy.h> #include <linux/rmap.h> #include <linux/mmu_notifier.h> -#include <linux/perf_counter.h> +#include <linux/perf_event.h> #include <asm/uaccess.h> #include <asm/cacheflush.h> @@ -1220,7 +1220,7 @@ munmap_back: if (correct_wcount) atomic_inc(&inode->i_writecount); out: - perf_counter_mmap(vma); + perf_event_mmap(vma); mm->total_vm += len >> PAGE_SHIFT; vm_stat_account(mm, vm_flags, file, len >> PAGE_SHIFT); @@ -2308,7 +2308,7 @@ int install_special_mapping(struct mm_struct *mm, mm->total_vm += len >> PAGE_SHIFT; - perf_counter_mmap(vma); + perf_event_mmap(vma); return 0; } diff --git a/mm/mprotect.c b/mm/mprotect.c index d80311b..8bc969d 100644 --- a/mm/mprotect.c +++ b/mm/mprotect.c @@ -23,7 +23,7 @@ #include <linux/swapops.h> #include <linux/mmu_notifier.h> #include <linux/migrate.h> -#include <linux/perf_counter.h> +#include <linux/perf_event.h> #include <asm/uaccess.h> #include <asm/pgtable.h> #include <asm/cacheflush.h> @@ -300,7 +300,7 @@ SYSCALL_DEFINE3(mprotect, unsigned long, start, size_t, len, error = mprotect_fixup(vma, &prev, nstart, tmp, newflags); if (error) goto out; - perf_counter_mmap(vma); + perf_event_mmap(vma); nstart = tmp; if (nstart < prev->vm_end) diff --git a/tools/perf/Makefile b/tools/perf/Makefile index 0aba8b6..b5f1953 100644 --- a/tools/perf/Makefile +++ b/tools/perf/Makefile @@ -318,7 +318,7 @@ export PERL_PATH LIB_FILE=libperf.a -LIB_H += ../../include/linux/perf_counter.h +LIB_H += ../../include/linux/perf_event.h LIB_H += ../../include/linux/rbtree.h LIB_H += ../../include/linux/list.h LIB_H += util/include/linux/list.h diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c index 043d85b..1ec7416 100644 --- a/tools/perf/builtin-annotate.c +++ b/tools/perf/builtin-annotate.c @@ -505,7 +505,7 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head) return -1; } - if (event->header.misc & PERF_EVENT_MISC_KERNEL) { + if (event->header.misc & PERF_RECORD_MISC_KERNEL) { show = SHOW_KERNEL; level = 'k'; @@ -513,7 +513,7 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head) dump_printf(" ...... dso: %s\n", dso->name); - } else if (event->header.misc & PERF_EVENT_MISC_USER) { + } else if (event->header.misc & PERF_RECORD_MISC_USER) { show = SHOW_USER; level = '.'; @@ -565,7 +565,7 @@ process_mmap_event(event_t *event, unsigned long offset, unsigned long head) thread = threads__findnew(event->mmap.pid, &threads, &last_match); - dump_printf("%p [%p]: PERF_EVENT_MMAP %d: [%p(%p) @ %p]: %s\n", + dump_printf("%p [%p]: PERF_RECORD_MMAP %d: [%p(%p) @ %p]: %s\n", (void *)(offset + head), (void *)(long)(event->header.size), event->mmap.pid, @@ -575,7 +575,7 @@ process_mmap_event(event_t *event, unsigned long offset, unsigned long head) event->mmap.filename); if (thread == NULL || map == NULL) { - dump_printf("problem processing PERF_EVENT_MMAP, skipping event.\n"); + dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n"); return 0; } @@ -591,14 +591,14 @@ process_comm_event(event_t *event, unsigned long offset, unsigned long head) struct thread *thread; thread = threads__findnew(event->comm.pid, &threads, &last_match); - dump_printf("%p [%p]: PERF_EVENT_COMM: %s:%d\n", + dump_printf("%p [%p]: PERF_RECORD_COMM: %s:%d\n", (void *)(offset + head), (void *)(long)(event->header.size), event->comm.comm, event->comm.pid); if (thread == NULL || thread__set_comm(thread, event->comm.comm)) { - dump_printf("problem processing PERF_EVENT_COMM, skipping event.\n"); + dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n"); return -1; } total_comm++; @@ -614,7 +614,7 @@ process_fork_event(event_t *event, unsigned long offset, unsigned long head) thread = threads__findnew(event->fork.pid, &threads, &last_match); parent = threads__findnew(event->fork.ppid, &threads, &last_match); - dump_printf("%p [%p]: PERF_EVENT_FORK: %d:%d\n", + dump_printf("%p [%p]: PERF_RECORD_FORK: %d:%d\n", (void *)(offset + head), (void *)(long)(event->header.size), event->fork.pid, event->fork.ppid); @@ -627,7 +627,7 @@ process_fork_event(event_t *event, unsigned long offset, unsigned long head) return 0; if (!thread || !parent || thread__fork(thread, parent)) { - dump_printf("problem processing PERF_EVENT_FORK, skipping event.\n"); + dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n"); return -1; } total_fork++; @@ -639,23 +639,23 @@ static int process_event(event_t *event, unsigned long offset, unsigned long head) { switch (event->header.type) { - case PERF_EVENT_SAMPLE: + case PERF_RECORD_SAMPLE: return process_sample_event(event, offset, head); - case PERF_EVENT_MMAP: + case PERF_RECORD_MMAP: return process_mmap_event(event, offset, head); - case PERF_EVENT_COMM: + case PERF_RECORD_COMM: return process_comm_event(event, offset, head); - case PERF_EVENT_FORK: + case PERF_RECORD_FORK: return process_fork_event(event, offset, head); /* * We dont process them right now but they are fine: */ - case PERF_EVENT_THROTTLE: - case PERF_EVENT_UNTHROTTLE: + case PERF_RECORD_THROTTLE: + case PERF_RECORD_UNTHROTTLE: return 0; default: diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 2459e5a..a5a050a 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -77,7 +77,7 @@ static struct mmap_data mmap_array[MAX_NR_CPUS][MAX_COUNTERS]; static unsigned long mmap_read_head(struct mmap_data *md) { - struct perf_counter_mmap_page *pc = md->base; + struct perf_event_mmap_page *pc = md->base; long head; head = pc->data_head; @@ -88,7 +88,7 @@ static unsigned long mmap_read_head(struct mmap_data *md) static void mmap_write_tail(struct mmap_data *md, unsigned long tail) { - struct perf_counter_mmap_page *pc = md->base; + struct perf_event_mmap_page *pc = md->base; /* * ensure all reads are done before we write the tail out. @@ -233,7 +233,7 @@ static pid_t pid_synthesize_comm_event(pid_t pid, int full) } } - comm_ev.header.type = PERF_EVENT_COMM; + comm_ev.header.type = PERF_RECORD_COMM; size = ALIGN(size, sizeof(u64)); comm_ev.header.size = sizeof(comm_ev) - (sizeof(comm_ev.comm) - size); @@ -288,7 +288,7 @@ static void pid_synthesize_mmap_samples(pid_t pid, pid_t tgid) while (1) { char bf[BUFSIZ], *pbf = bf; struct mmap_event mmap_ev = { - .header = { .type = PERF_EVENT_MMAP }, + .header = { .type = PERF_RECORD_MMAP }, }; int n; size_t size; @@ -355,7 +355,7 @@ static void synthesize_all(void) static int group_fd; -static struct perf_header_attr *get_header_attr(struct perf_counter_attr *a, int nr) +static struct perf_header_attr *get_header_attr(struct perf_event_attr *a, int nr) { struct perf_header_attr *h_attr; @@ -371,7 +371,7 @@ static struct perf_header_attr *get_header_attr(struct perf_counter_attr *a, int static void create_counter(int counter, int cpu, pid_t pid) { - struct perf_counter_attr *attr = attrs + counter; + struct perf_event_attr *attr = attrs + counter; struct perf_header_attr *h_attr; int track = !counter; /* only the first counter needs these */ struct { @@ -417,7 +417,7 @@ static void create_counter(int counter, int cpu, pid_t pid) attr->disabled = 1; try_again: - fd[nr_cpu][counter] = sys_perf_counter_open(attr, pid, cpu, group_fd, 0); + fd[nr_cpu][counter] = sys_perf_event_open(attr, pid, cpu, group_fd, 0); if (fd[nr_cpu][counter] < 0) { int err = errno; @@ -444,7 +444,7 @@ try_again: printf("\n"); error("perfcounter syscall returned with %d (%s)\n", fd[nr_cpu][counter], strerror(err)); - die("No CONFIG_PERF_COUNTERS=y kernel support configured?\n"); + die("No CONFIG_PERF_EVENTS=y kernel support configured?\n"); exit(-1); } @@ -478,7 +478,7 @@ try_again: if (multiplex && fd[nr_cpu][counter] != multiplex_fd) { int ret; - ret = ioctl(fd[nr_cpu][counter], PERF_COUNTER_IOC_SET_OUTPUT, multiplex_fd); + ret = ioctl(fd[nr_cpu][counter], PERF_EVENT_IOC_SET_OUTPUT, multiplex_fd); assert(ret != -1); } else { event_array[nr_poll].fd = fd[nr_cpu][counter]; @@ -496,7 +496,7 @@ try_again: } } - ioctl(fd[nr_cpu][counter], PERF_COUNTER_IOC_ENABLE); + ioctl(fd[nr_cpu][counter], PERF_EVENT_IOC_ENABLE); } static void open_counters(int cpu, pid_t pid) @@ -642,7 +642,7 @@ static int __cmd_record(int argc, const char **argv) if (done) { for (i = 0; i < nr_cpu; i++) { for (counter = 0; counter < nr_counters; counter++) - ioctl(fd[i][counter], PERF_COUNTER_IOC_DISABLE); + ioctl(fd[i][counter], PERF_EVENT_IOC_DISABLE); } } } diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index cdf9a8d..19669c2 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -1121,7 +1121,7 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head) more_data += sizeof(u64); } - dump_printf("%p [%p]: PERF_EVENT_SAMPLE (IP, %d): %d/%d: %p period: %Ld\n", + dump_printf("%p [%p]: PERF_RECORD_SAMPLE (IP, %d): %d/%d: %p period: %Ld\n", (void *)(offset + head), (void *)(long)(event->header.size), event->header.misc, @@ -1158,9 +1158,9 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head) if (comm_list && !strlist__has_entry(comm_list, thread->comm)) return 0; - cpumode = event->header.misc & PERF_EVENT_MISC_CPUMODE_MASK; + cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; - if (cpumode == PERF_EVENT_MISC_KERNEL) { + if (cpumode == PERF_RECORD_MISC_KERNEL) { show = SHOW_KERNEL; level = 'k'; @@ -1168,7 +1168,7 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head) dump_printf(" ...... dso: %s\n", dso->name); - } else if (cpumode == PERF_EVENT_MISC_USER) { + } else if (cpumode == PERF_RECORD_MISC_USER) { show = SHOW_USER; level = '.'; @@ -1210,7 +1210,7 @@ process_mmap_event(event_t *event, unsigned long offset, unsigned long head) thread = threads__findnew(event->mmap.pid, &threads, &last_match); - dump_printf("%p [%p]: PERF_EVENT_MMAP %d/%d: [%p(%p) @ %p]: %s\n", + dump_printf("%p [%p]: PERF_RECORD_MMAP %d/%d: [%p(%p) @ %p]: %s\n", (void *)(offset + head), (void *)(long)(event->header.size), event->mmap.pid, @@ -1221,7 +1221,7 @@ process_mmap_event(event_t *event, unsigned long offset, unsigned long head) event->mmap.filename); if (thread == NULL || map == NULL) { - dump_printf("problem processing PERF_EVENT_MMAP, skipping event.\n"); + dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n"); return 0; } @@ -1238,14 +1238,14 @@ process_comm_event(event_t *event, unsigned long offset, unsigned long head) thread = threads__findnew(event->comm.pid, &threads, &last_match); - dump_printf("%p [%p]: PERF_EVENT_COMM: %s:%d\n", + dump_printf("%p [%p]: PERF_RECORD_COMM: %s:%d\n", (void *)(offset + head), (void *)(long)(event->header.size), event->comm.comm, event->comm.pid); if (thread == NULL || thread__set_comm_adjust(thread, event->comm.comm)) { - dump_printf("problem processing PERF_EVENT_COMM, skipping event.\n"); + dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n"); return -1; } total_comm++; @@ -1262,10 +1262,10 @@ process_task_event(event_t *event, unsigned long offset, unsigned long head) thread = threads__findnew(event->fork.pid, &threads, &last_match); parent = threads__findnew(event->fork.ppid, &threads, &last_match); - dump_printf("%p [%p]: PERF_EVENT_%s: (%d:%d):(%d:%d)\n", + dump_printf("%p [%p]: PERF_RECORD_%s: (%d:%d):(%d:%d)\n", (void *)(offset + head), (void *)(long)(event->header.size), - event->header.type == PERF_EVENT_FORK ? "FORK" : "EXIT", + event->header.type == PERF_RECORD_FORK ? "FORK" : "EXIT", event->fork.pid, event->fork.tid, event->fork.ppid, event->fork.ptid); @@ -1276,11 +1276,11 @@ process_task_event(event_t *event, unsigned long offset, unsigned long head) if (thread == parent) return 0; - if (event->header.type == PERF_EVENT_EXIT) + if (event->header.type == PERF_RECORD_EXIT) return 0; if (!thread || !parent || thread__fork(thread, parent)) { - dump_printf("problem processing PERF_EVENT_FORK, skipping event.\n"); + dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n"); return -1; } total_fork++; @@ -1291,7 +1291,7 @@ process_task_event(event_t *event, unsigned long offset, unsigned long head) static int process_lost_event(event_t *event, unsigned long offset, unsigned long head) { - dump_printf("%p [%p]: PERF_EVENT_LOST: id:%Ld: lost:%Ld\n", + dump_printf("%p [%p]: PERF_RECORD_LOST: id:%Ld: lost:%Ld\n", (void *)(offset + head), (void *)(long)(event->header.size), event->lost.id, @@ -1305,7 +1305,7 @@ process_lost_event(event_t *event, unsigned long offset, unsigned long head) static int process_read_event(event_t *event, unsigned long offset, unsigned long head) { - struct perf_counter_attr *attr; + struct perf_event_attr *attr; attr = perf_header__find_attr(event->read.id, header); @@ -1319,7 +1319,7 @@ process_read_event(event_t *event, unsigned long offset, unsigned long head) event->read.value); } - dump_printf("%p [%p]: PERF_EVENT_READ: %d %d %s %Lu\n", + dump_printf("%p [%p]: PERF_RECORD_READ: %d %d %s %Lu\n", (void *)(offset + head), (void *)(long)(event->header.size), event->read.pid, @@ -1337,31 +1337,31 @@ process_event(event_t *event, unsigned long offset, unsigned long head) trace_event(event); switch (event->header.type) { - case PERF_EVENT_SAMPLE: + case PERF_RECORD_SAMPLE: return process_sample_event(event, offset, head); - case PERF_EVENT_MMAP: + case PERF_RECORD_MMAP: return process_mmap_event(event, offset, head); - case PERF_EVENT_COMM: + case PERF_RECORD_COMM: return process_comm_event(event, offset, head); - case PERF_EVENT_FORK: - case PERF_EVENT_EXIT: + case PERF_RECORD_FORK: + case PERF_RECORD_EXIT: return process_task_event(event, offset, head); - case PERF_EVENT_LOST: + case PERF_RECORD_LOST: return process_lost_event(event, offset, head); - case PERF_EVENT_READ: + case PERF_RECORD_READ: return process_read_event(event, offset, head); /* * We dont process them right now but they are fine: */ - case PERF_EVENT_THROTTLE: - case PERF_EVENT_UNTHROTTLE: + case PERF_RECORD_THROTTLE: + case PERF_RECORD_UNTHROTTLE: return 0; default: diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c index 275d79c..ea9c15c 100644 --- a/tools/perf/builtin-sched.c +++ b/tools/perf/builtin-sched.c @@ -1573,7 +1573,7 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head) more_data += sizeof(u64); } - dump_printf("%p [%p]: PERF_EVENT_SAMPLE (IP, %d): %d/%d: %p period: %Ld\n", + dump_printf("%p [%p]: PERF_RECORD_SAMPLE (IP, %d): %d/%d: %p period: %Ld\n", (void *)(offset + head), (void *)(long)(event->header.size), event->header.misc, @@ -1589,9 +1589,9 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head) return -1; } - cpumode = event->header.misc & PERF_EVENT_MISC_CPUMODE_MASK; + cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; - if (cpumode == PERF_EVENT_MISC_KERNEL) { + if (cpumode == PERF_RECORD_MISC_KERNEL) { show = SHOW_KERNEL; level = 'k'; @@ -1599,7 +1599,7 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head) dump_printf(" ...... dso: %s\n", dso->name); - } else if (cpumode == PERF_EVENT_MISC_USER) { + } else if (cpumode == PERF_RECORD_MISC_USER) { show = SHOW_USER; level = '.'; @@ -1626,23 +1626,23 @@ process_event(event_t *event, unsigned long offset, unsigned long head) nr_events++; switch (event->header.type) { - case PERF_EVENT_MMAP: + case PERF_RECORD_MMAP: return 0; - case PERF_EVENT_LOST: + case PERF_RECORD_LOST: nr_lost_chunks++; nr_lost_events += event->lost.lost; return 0; - case PERF_EVENT_COMM: + case PERF_RECORD_COMM: return process_comm_event(event, offset, head); - case PERF_EVENT_EXIT ... PERF_EVENT_READ: + case PERF_RECORD_EXIT ... PERF_RECORD_READ: return 0; - case PERF_EVENT_SAMPLE: + case PERF_RECORD_SAMPLE: return process_sample_event(event, offset, head); - case PERF_EVENT_MAX: + case PERF_RECORD_MAX: default: return -1; } diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index 61b8282..16af2d8 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -48,7 +48,7 @@ #include <sys/prctl.h> #include <math.h> -static struct perf_counter_attr default_attrs[] = { +static struct perf_event_attr default_attrs[] = { { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK }, { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES}, @@ -130,11 +130,11 @@ struct stats runtime_cycles_stats; attrs[counter].config == PERF_COUNT_##c) #define ERR_PERF_OPEN \ -"Error: counter %d, sys_perf_counter_open() syscall returned with %d (%s)\n" +"Error: counter %d, sys_perf_event_open() syscall returned with %d (%s)\n" static void create_perf_stat_counter(int counter, int pid) { - struct perf_counter_attr *attr = attrs + counter; + struct perf_event_attr *attr = attrs + counter; if (scale) attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED | @@ -144,7 +144,7 @@ static void create_perf_stat_counter(int counter, int pid) unsigned int cpu; for (cpu = 0; cpu < nr_cpus; cpu++) { - fd[cpu][counter] = sys_perf_counter_open(attr, -1, cpu, -1, 0); + fd[cpu][counter] = sys_perf_event_open(attr, -1, cpu, -1, 0); if (fd[cpu][counter] < 0 && verbose) fprintf(stderr, ERR_PERF_OPEN, counter, fd[cpu][counter], strerror(errno)); @@ -154,7 +154,7 @@ static void create_perf_stat_counter(int counter, int pid) attr->disabled = 1; attr->enable_on_exec = 1; - fd[0][counter] = sys_perf_counter_open(attr, pid, -1, -1, 0); + fd[0][counter] = sys_perf_event_open(attr, pid, -1, -1, 0); if (fd[0][counter] < 0 && verbose) fprintf(stderr, ERR_PERF_OPEN, counter, fd[0][counter], strerror(errno)); diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c index 6004063..4405681 100644 --- a/tools/perf/builtin-timechart.c +++ b/tools/perf/builtin-timechart.c @@ -937,21 +937,21 @@ process_event(event_t *event) switch (event->header.type) { - case PERF_EVENT_COMM: + case PERF_RECORD_COMM: return process_comm_event(event); - case PERF_EVENT_FORK: + case PERF_RECORD_FORK: return process_fork_event(event); - case PERF_EVENT_EXIT: + case PERF_RECORD_EXIT: return process_exit_event(event); - case PERF_EVENT_SAMPLE: + case PERF_RECORD_SAMPLE: return queue_sample_event(event); /* * We dont process them right now but they are fine: */ - case PERF_EVENT_MMAP: - case PERF_EVENT_THROTTLE: - case PERF_EVENT_UNTHROTTLE: + case PERF_RECORD_MMAP: + case PERF_RECORD_THROTTLE: + case PERF_RECORD_UNTHROTTLE: return 0; default: diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 4002ccb..1ca8889 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -901,7 +901,7 @@ struct mmap_data { static unsigned int mmap_read_head(struct mmap_data *md) { - struct perf_counter_mmap_page *pc = md->base; + struct perf_event_mmap_page *pc = md->base; int head; head = pc->data_head; @@ -977,9 +977,9 @@ static void mmap_read_counter(struct mmap_data *md) old += size; - if (event->header.type == PERF_EVENT_SAMPLE) { + if (event->header.type == PERF_RECORD_SAMPLE) { int user = - (event->header.misc & PERF_EVENT_MISC_CPUMODE_MASK) == PERF_EVENT_MISC_USER; + (event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK) == PERF_RECORD_MISC_USER; process_event(event->ip.ip, md->counter, user); } } @@ -1005,7 +1005,7 @@ int group_fd; static void start_counter(int i, int counter) { - struct perf_counter_attr *attr; + struct perf_event_attr *attr; int cpu; cpu = profile_cpu; @@ -1019,7 +1019,7 @@ static void start_counter(int i, int counter) attr->inherit = (cpu < 0) && inherit; try_again: - fd[i][counter] = sys_perf_counter_open(attr, target_pid, cpu, group_fd, 0); + fd[i][counter] = sys_perf_event_open(attr, target_pid, cpu, group_fd, 0); if (fd[i][counter] < 0) { int err = errno; @@ -1044,7 +1044,7 @@ try_again: printf("\n"); error("perfcounter syscall returned with %d (%s)\n", fd[i][counter], strerror(err)); - die("No CONFIG_PERF_COUNTERS=y kernel support configured?\n"); + die("No CONFIG_PERF_EVENTS=y kernel support configured?\n"); exit(-1); } assert(fd[i][counter] >= 0); diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 914ab36..e9d256e 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -35,14 +35,14 @@ process_comm_event(event_t *event, unsigned long offset, unsigned long head) thread = threads__findnew(event->comm.pid, &threads, &last_match); - dump_printf("%p [%p]: PERF_EVENT_COMM: %s:%d\n", + dump_printf("%p [%p]: PERF_RECORD_COMM: %s:%d\n", (void *)(offset + head), (void *)(long)(event->header.size), event->comm.comm, event->comm.pid); if (thread == NULL || thread__set_comm(thread, event->comm.comm)) { - dump_printf("problem processing PERF_EVENT_COMM, skipping event.\n"); + dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n"); return -1; } total_comm++; @@ -82,7 +82,7 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head) more_data += sizeof(u64); } - dump_printf("%p [%p]: PERF_EVENT_SAMPLE (IP, %d): %d/%d: %p period: %Ld\n", + dump_printf("%p [%p]: PERF_RECORD_SAMPLE (IP, %d): %d/%d: %p period: %Ld\n", (void *)(offset + head), (void *)(long)(event->header.size), event->header.misc, @@ -98,9 +98,9 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head) return -1; } - cpumode = event->header.misc & PERF_EVENT_MISC_CPUMODE_MASK; + cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; - if (cpumode == PERF_EVENT_MISC_KERNEL) { + if (cpumode == PERF_RECORD_MISC_KERNEL) { show = SHOW_KERNEL; level = 'k'; @@ -108,7 +108,7 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head) dump_printf(" ...... dso: %s\n", dso->name); - } else if (cpumode == PERF_EVENT_MISC_USER) { + } else if (cpumode == PERF_RECORD_MISC_USER) { show = SHOW_USER; level = '.'; @@ -146,19 +146,19 @@ process_event(event_t *event, unsigned long offset, unsigned long head) trace_event(event); switch (event->header.type) { - case PERF_EVENT_MMAP ... PERF_EVENT_LOST: + case PERF_RECORD_MMAP ... PERF_RECORD_LOST: return 0; - case PERF_EVENT_COMM: + case PERF_RECORD_COMM: return process_comm_event(event, offset, head); - case PERF_EVENT_EXIT ... PERF_EVENT_READ: + case PERF_RECORD_EXIT ... PERF_RECORD_READ: return 0; - case PERF_EVENT_SAMPLE: + case PERF_RECORD_SAMPLE: return process_sample_event(event, offset, head); - case PERF_EVENT_MAX: + case PERF_RECORD_MAX: default: return -1; } diff --git a/tools/perf/design.txt b/tools/perf/design.txt index f71e0d2..f1946d1 100644 --- a/tools/perf/design.txt +++ b/tools/perf/design.txt @@ -18,10 +18,10 @@ underlying hardware counters. Performance counters are accessed via special file descriptors. There's one file descriptor per virtual counter used. -The special file descriptor is opened via the perf_counter_open() +The special file descriptor is opened via the perf_event_open() system call: - int sys_perf_counter_open(struct perf_counter_hw_event *hw_event_uptr, + int sys_perf_event_open(struct perf_event_hw_event *hw_event_uptr, pid_t pid, int cpu, int group_fd, unsigned long flags); @@ -32,9 +32,9 @@ can be used to set the blocking mode, etc. Multiple counters can be kept open at a time, and the counters can be poll()ed. -When creating a new counter fd, 'perf_counter_hw_event' is: +When creating a new counter fd, 'perf_event_hw_event' is: -struct perf_counter_hw_event { +struct perf_event_hw_event { /* * The MSB of the config word signifies if the rest contains cpu * specific (raw) counter configuration data, if unset, the next @@ -93,7 +93,7 @@ specified by 'event_id': /* * Generalized performance counter event types, used by the hw_event.event_id - * parameter of the sys_perf_counter_open() syscall: + * parameter of the sys_perf_event_open() syscall: */ enum hw_event_ids { /* @@ -159,7 +159,7 @@ in size. * reads on the counter should return the indicated quantities, * in increasing order of bit value, after the counter value. */ -enum perf_counter_read_format { +enum perf_event_read_format { PERF_FORMAT_TOTAL_TIME_ENABLED = 1, PERF_FORMAT_TOTAL_TIME_RUNNING = 2, }; @@ -178,7 +178,7 @@ interrupt: * Bits that can be set in hw_event.record_type to request information * in the overflow packets. */ -enum perf_counter_record_format { +enum perf_event_record_format { PERF_RECORD_IP = 1U << 0, PERF_RECORD_TID = 1U << 1, PERF_RECORD_TIME = 1U << 2, @@ -228,7 +228,7 @@ these events are recorded in the ring-buffer (see below). The 'comm' bit allows tracking of process comm data on process creation. This too is recorded in the ring-buffer (see below). -The 'pid' parameter to the perf_counter_open() system call allows the +The 'pid' parameter to the perf_event_open() system call allows the counter to be specific to a task: pid == 0: if the pid parameter is zero, the counter is attached to the @@ -258,7 +258,7 @@ The 'flags' parameter is currently unused and must be zero. The 'group_fd' parameter allows counter "groups" to be set up. A counter group has one counter which is the group "leader". The leader -is created first, with group_fd = -1 in the perf_counter_open call +is created first, with group_fd = -1 in the perf_event_open call that creates it. The rest of the group members are created subsequently, with group_fd giving the fd of the group leader. (A single counter on its own is created with group_fd = -1 and is @@ -277,13 +277,13 @@ tracking are logged into a ring-buffer. This ring-buffer is created and accessed through mmap(). The mmap size should be 1+2^n pages, where the first page is a meta-data page -(struct perf_counter_mmap_page) that contains various bits of information such +(struct perf_event_mmap_page) that contains various bits of information such as where the ring-buffer head is. /* * Structure of the page that can be mapped via mmap */ -struct perf_counter_mmap_page { +struct perf_event_mmap_page { __u32 version; /* version number of this structure */ __u32 compat_version; /* lowest version this is compat with */ @@ -317,7 +317,7 @@ struct perf_counter_mmap_page { * Control data for the mmap() data buffer. * * User-space reading this value should issue an rmb(), on SMP capable - * platforms, after reading this value -- see perf_counter_wakeup(). + * platforms, after reading this value -- see perf_event_wakeup(). */ __u32 data_head; /* head in the data section */ }; @@ -327,9 +327,9 @@ NOTE: the hw-counter userspace bits are arch specific and are currently only The following 2^n pages are the ring-buffer which contains events of the form: -#define PERF_EVENT_MISC_KERNEL (1 << 0) -#define PERF_EVENT_MISC_USER (1 << 1) -#define PERF_EVENT_MISC_OVERFLOW (1 << 2) +#define PERF_RECORD_MISC_KERNEL (1 << 0) +#define PERF_RECORD_MISC_USER (1 << 1) +#define PERF_RECORD_MISC_OVERFLOW (1 << 2) struct perf_event_header { __u32 type; @@ -353,8 +353,8 @@ enum perf_event_type { * char filename[]; * }; */ - PERF_EVENT_MMAP = 1, - PERF_EVENT_MUNMAP = 2, + PERF_RECORD_MMAP = 1, + PERF_RECORD_MUNMAP = 2, /* * struct { @@ -364,10 +364,10 @@ enum perf_event_type { * char comm[]; * }; */ - PERF_EVENT_COMM = 3, + PERF_RECORD_COMM = 3, /* - * When header.misc & PERF_EVENT_MISC_OVERFLOW the event_type field + * When header.misc & PERF_RECORD_MISC_OVERFLOW the event_type field * will be PERF_RECORD_* * * struct { @@ -397,7 +397,7 @@ Notification of new events is possible through poll()/select()/epoll() and fcntl() managing signals. Normally a notification is generated for every page filled, however one can -additionally set perf_counter_hw_event.wakeup_events to generate one every +additionally set perf_event_hw_event.wakeup_events to generate one every so many counter overflow events. Future work will include a splice() interface to the ring-buffer. @@ -409,11 +409,11 @@ events but does continue to exist and maintain its count value. An individual counter or counter group can be enabled with - ioctl(fd, PERF_COUNTER_IOC_ENABLE); + ioctl(fd, PERF_EVENT_IOC_ENABLE); or disabled with - ioctl(fd, PERF_COUNTER_IOC_DISABLE); + ioctl(fd, PERF_EVENT_IOC_DISABLE); Enabling or disabling the leader of a group enables or disables the whole group; that is, while the group leader is disabled, none of the @@ -424,16 +424,16 @@ other counter. Additionally, non-inherited overflow counters can use - ioctl(fd, PERF_COUNTER_IOC_REFRESH, nr); + ioctl(fd, PERF_EVENT_IOC_REFRESH, nr); to enable a counter for 'nr' events, after which it gets disabled again. A process can enable or disable all the counter groups that are attached to it, using prctl: - prctl(PR_TASK_PERF_COUNTERS_ENABLE); + prctl(PR_TASK_PERF_EVENTS_ENABLE); - prctl(PR_TASK_PERF_COUNTERS_DISABLE); + prctl(PR_TASK_PERF_EVENTS_DISABLE); This applies to all counters on the current process, whether created by this process or by another, and doesn't affect any counters that @@ -447,11 +447,11 @@ Arch requirements If your architecture does not have hardware performance metrics, you can still use the generic software counters based on hrtimers for sampling. -So to start with, in order to add HAVE_PERF_COUNTERS to your Kconfig, you +So to start with, in order to add HAVE_PERF_EVENTS to your Kconfig, you will need at least this: - - asm/perf_counter.h - a basic stub will suffice at first + - asm/perf_event.h - a basic stub will suffice at first - support for atomic64 types (and associated helper functions) - - set_perf_counter_pending() implemented + - set_perf_event_pending() implemented If your architecture does have hardware capabilities, you can override the -weak stub hw_perf_counter_init() to register hardware counters. +weak stub hw_perf_event_init() to register hardware counters. diff --git a/tools/perf/perf.h b/tools/perf/perf.h index 2abeb20..8cc4623 100644 --- a/tools/perf/perf.h +++ b/tools/perf/perf.h @@ -52,15 +52,15 @@ #include <sys/types.h> #include <sys/syscall.h> -#include "../../include/linux/perf_counter.h" +#include "../../include/linux/perf_event.h" #include "util/types.h" /* - * prctl(PR_TASK_PERF_COUNTERS_DISABLE) will (cheaply) disable all + * prctl(PR_TASK_PERF_EVENTS_DISABLE) will (cheaply) disable all * counters in the current task. */ -#define PR_TASK_PERF_COUNTERS_DISABLE 31 -#define PR_TASK_PERF_COUNTERS_ENABLE 32 +#define PR_TASK_PERF_EVENTS_DISABLE 31 +#define PR_TASK_PERF_EVENTS_ENABLE 32 #ifndef NSEC_PER_SEC # define NSEC_PER_SEC 1000000000ULL @@ -90,12 +90,12 @@ static inline unsigned long long rdclock(void) _min1 < _min2 ? _min1 : _min2; }) static inline int -sys_perf_counter_open(struct perf_counter_attr *attr, +sys_perf_event_open(struct perf_event_attr *attr, pid_t pid, int cpu, int group_fd, unsigned long flags) { attr->size = sizeof(*attr); - return syscall(__NR_perf_counter_open, attr, pid, cpu, + return syscall(__NR_perf_event_open, attr, pid, cpu, group_fd, flags); } diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h index 018d414..2c9c26d6 100644 --- a/tools/perf/util/event.h +++ b/tools/perf/util/event.h @@ -1,5 +1,5 @@ -#ifndef __PERF_EVENT_H -#define __PERF_EVENT_H +#ifndef __PERF_RECORD_H +#define __PERF_RECORD_H #include "../perf.h" #include "util.h" #include <linux/list.h> diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index bb4fca3..e306857 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -9,7 +9,7 @@ /* * Create new perf.data header attribute: */ -struct perf_header_attr *perf_header_attr__new(struct perf_counter_attr *attr) +struct perf_header_attr *perf_header_attr__new(struct perf_event_attr *attr) { struct perf_header_attr *self = malloc(sizeof(*self)); @@ -134,7 +134,7 @@ struct perf_file_section { }; struct perf_file_attr { - struct perf_counter_attr attr; + struct perf_event_attr attr; struct perf_file_section ids; }; @@ -320,7 +320,7 @@ u64 perf_header__sample_type(struct perf_header *header) return type; } -struct perf_counter_attr * +struct perf_event_attr * perf_header__find_attr(u64 id, struct perf_header *header) { int i; diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h index 7b0e84a..a0761bc 100644 --- a/tools/perf/util/header.h +++ b/tools/perf/util/header.h @@ -1,12 +1,12 @@ #ifndef _PERF_HEADER_H #define _PERF_HEADER_H -#include "../../../include/linux/perf_counter.h" +#include "../../../include/linux/perf_event.h" #include <sys/types.h> #include "types.h" struct perf_header_attr { - struct perf_counter_attr attr; + struct perf_event_attr attr; int ids, size; u64 *id; off_t id_offset; @@ -34,11 +34,11 @@ char *perf_header__find_event(u64 id); struct perf_header_attr * -perf_header_attr__new(struct perf_counter_attr *attr); +perf_header_attr__new(struct perf_event_attr *attr); void perf_header_attr__add_id(struct perf_header_attr *self, u64 id); u64 perf_header__sample_type(struct perf_header *header); -struct perf_counter_attr * +struct perf_event_attr * perf_header__find_attr(u64 id, struct perf_header *header); diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index 89172fd..13ab4b8 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -10,7 +10,7 @@ int nr_counters; -struct perf_counter_attr attrs[MAX_COUNTERS]; +struct perf_event_attr attrs[MAX_COUNTERS]; struct event_symbol { u8 type; @@ -48,13 +48,13 @@ static struct event_symbol event_symbols[] = { { CSW(CPU_MIGRATIONS), "cpu-migrations", "migrations" }, }; -#define __PERF_COUNTER_FIELD(config, name) \ - ((config & PERF_COUNTER_##name##_MASK) >> PERF_COUNTER_##name##_SHIFT) +#define __PERF_EVENT_FIELD(config, name) \ + ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT) -#define PERF_COUNTER_RAW(config) __PERF_COUNTER_FIELD(config, RAW) -#define PERF_COUNTER_CONFIG(config) __PERF_COUNTER_FIELD(config, CONFIG) -#define PERF_COUNTER_TYPE(config) __PERF_COUNTER_FIELD(config, TYPE) -#define PERF_COUNTER_ID(config) __PERF_COUNTER_FIELD(config, EVENT) +#define PERF_EVENT_RAW(config) __PERF_EVENT_FIELD(config, RAW) +#define PERF_EVENT_CONFIG(config) __PERF_EVENT_FIELD(config, CONFIG) +#define PERF_EVENT_TYPE(config) __PERF_EVENT_FIELD(config, TYPE) +#define PERF_EVENT_ID(config) __PERF_EVENT_FIELD(config, EVENT) static const char *hw_event_names[] = { "cycles", @@ -352,7 +352,7 @@ static int parse_aliases(const char **str, const char *names[][MAX_ALIASES], int } static enum event_result -parse_generic_hw_event(const char **str, struct perf_counter_attr *attr) +parse_generic_hw_event(const char **str, struct perf_event_attr *attr) { const char *s = *str; int cache_type = -1, cache_op = -1, cache_result = -1; @@ -417,7 +417,7 @@ parse_single_tracepoint_event(char *sys_name, const char *evt_name, unsigned int evt_length, char *flags, - struct perf_counter_attr *attr, + struct perf_event_attr *attr, const char **strp) { char evt_path[MAXPATHLEN]; @@ -505,7 +505,7 @@ parse_subsystem_tracepoint_event(char *sys_name, char *flags) static enum event_result parse_tracepoint_event(const char **strp, - struct perf_counter_attr *attr) + struct perf_event_attr *attr) { const char *evt_name; char *flags; @@ -563,7 +563,7 @@ static int check_events(const char *str, unsigned int i) } static enum event_result -parse_symbolic_event(const char **strp, struct perf_counter_attr *attr) +parse_symbolic_event(const char **strp, struct perf_event_attr *attr) { const char *str = *strp; unsigned int i; @@ -582,7 +582,7 @@ parse_symbolic_event(const char **strp, struct perf_counter_attr *attr) } static enum event_result -parse_raw_event(const char **strp, struct perf_counter_attr *attr) +parse_raw_event(const char **strp, struct perf_event_attr *attr) { const char *str = *strp; u64 config; @@ -601,7 +601,7 @@ parse_raw_event(const char **strp, struct perf_counter_attr *attr) } static enum event_result -parse_numeric_event(const char **strp, struct perf_counter_attr *attr) +parse_numeric_event(const char **strp, struct perf_event_attr *attr) { const char *str = *strp; char *endp; @@ -623,7 +623,7 @@ parse_numeric_event(const char **strp, struct perf_counter_attr *attr) } static enum event_result -parse_event_modifier(const char **strp, struct perf_counter_attr *attr) +parse_event_modifier(const char **strp, struct perf_event_attr *attr) { const char *str = *strp; int eu = 1, ek = 1, eh = 1; @@ -656,7 +656,7 @@ parse_event_modifier(const char **strp, struct perf_counter_attr *attr) * Symbolic names are (almost) exactly matched. */ static enum event_result -parse_event_symbols(const char **str, struct perf_counter_attr *attr) +parse_event_symbols(const char **str, struct perf_event_attr *attr) { enum event_result ret; @@ -711,7 +711,7 @@ static void store_event_type(const char *orgname) int parse_events(const struct option *opt __used, const char *str, int unset __used) { - struct perf_counter_attr attr; + struct perf_event_attr attr; enum event_result ret; if (strchr(str, ':')) diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h index 60704c1..30c6081 100644 --- a/tools/perf/util/parse-events.h +++ b/tools/perf/util/parse-events.h @@ -16,7 +16,7 @@ extern struct tracepoint_path *tracepoint_id_to_path(u64 config); extern int nr_counters; -extern struct perf_counter_attr attrs[MAX_COUNTERS]; +extern struct perf_event_attr attrs[MAX_COUNTERS]; extern const char *event_name(int ctr); extern const char *__event_name(int type, u64 config); diff --git a/tools/perf/util/trace-event-info.c b/tools/perf/util/trace-event-info.c index 1fd824c..af4b057 100644 --- a/tools/perf/util/trace-event-info.c +++ b/tools/perf/util/trace-event-info.c @@ -480,12 +480,12 @@ out: } static struct tracepoint_path * -get_tracepoints_path(struct perf_counter_attr *pattrs, int nb_counters) +get_tracepoints_path(struct perf_event_attr *pattrs, int nb_events) { struct tracepoint_path path, *ppath = &path; int i; - for (i = 0; i < nb_counters; i++) { + for (i = 0; i < nb_events; i++) { if (pattrs[i].type != PERF_TYPE_TRACEPOINT) continue; ppath->next = tracepoint_id_to_path(pattrs[i].config); @@ -496,7 +496,7 @@ get_tracepoints_path(struct perf_counter_attr *pattrs, int nb_counters) return path.next; } -void read_tracing_data(struct perf_counter_attr *pattrs, int nb_counters) +void read_tracing_data(struct perf_event_attr *pattrs, int nb_events) { char buf[BUFSIZ]; struct tracepoint_path *tps; @@ -530,7 +530,7 @@ void read_tracing_data(struct perf_counter_attr *pattrs, int nb_counters) page_size = getpagesize(); write_or_die(&page_size, 4); - tps = get_tracepoints_path(pattrs, nb_counters); + tps = get_tracepoints_path(pattrs, nb_events); read_header_files(); read_ftrace_files(tps); diff --git a/tools/perf/util/trace-event.h b/tools/perf/util/trace-event.h index d35ebf1..693f815 100644 --- a/tools/perf/util/trace-event.h +++ b/tools/perf/util/trace-event.h @@ -240,6 +240,6 @@ unsigned long long raw_field_value(struct event *event, const char *name, void *data); void *raw_field_ptr(struct event *event, const char *name, void *data); -void read_tracing_data(struct perf_counter_attr *pattrs, int nb_counters); +void read_tracing_data(struct perf_event_attr *pattrs, int nb_events); #endif /* _TRACE_EVENTS_H */ |
