diff options
40 files changed, 113 insertions, 68 deletions
@@ -536,7 +536,7 @@ KBUILD_CFLAGS += -g KBUILD_AFLAGS += -gdwarf-2 endif -ifdef CONFIG_FTRACE +ifdef CONFIG_FUNCTION_TRACER KBUILD_CFLAGS += -pg endif diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index df39d20..6007334 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -16,8 +16,8 @@ config ARM select HAVE_ARCH_KGDB select HAVE_KPROBES if (!XIP_KERNEL) select HAVE_KRETPROBES if (HAVE_KPROBES) - select HAVE_FTRACE if (!XIP_KERNEL) - select HAVE_DYNAMIC_FTRACE if (HAVE_FTRACE) + select HAVE_FUNCTION_TRACER if (!XIP_KERNEL) + select HAVE_DYNAMIC_FTRACE if (HAVE_FUNCTION_TRACER) select HAVE_GENERIC_DMA_COHERENT help The ARM series is a line of low-power-consumption RISC chip designs diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile index 7a03f20..c47f2a3 100644 --- a/arch/arm/boot/compressed/Makefile +++ b/arch/arm/boot/compressed/Makefile @@ -70,7 +70,7 @@ SEDFLAGS = s/TEXT_START/$(ZTEXTADDR)/;s/BSS_START/$(ZBSSADDR)/ targets := vmlinux vmlinux.lds piggy.gz piggy.o font.o font.c \ head.o misc.o $(OBJS) -ifeq ($(CONFIG_FTRACE),y) +ifeq ($(CONFIG_FUNCTION_TRACER),y) ORIG_CFLAGS := $(KBUILD_CFLAGS) KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS)) endif diff --git a/arch/arm/include/asm/ftrace.h b/arch/arm/include/asm/ftrace.h index 584ef9a..39c8bc1 100644 --- a/arch/arm/include/asm/ftrace.h +++ b/arch/arm/include/asm/ftrace.h @@ -1,7 +1,7 @@ #ifndef _ASM_ARM_FTRACE #define _ASM_ARM_FTRACE -#ifdef CONFIG_FTRACE +#ifdef CONFIG_FUNCTION_TRACER #define MCOUNT_ADDR ((long)(mcount)) #define MCOUNT_INSN_SIZE 4 /* sizeof mcount call */ diff --git a/arch/arm/kernel/armksyms.c b/arch/arm/kernel/armksyms.c index 2357b1c..c74f766 100644 --- a/arch/arm/kernel/armksyms.c +++ b/arch/arm/kernel/armksyms.c @@ -183,6 +183,6 @@ EXPORT_SYMBOL(_find_next_bit_be); EXPORT_SYMBOL(copy_page); -#ifdef CONFIG_FTRACE +#ifdef CONFIG_FUNCTION_TRACER EXPORT_SYMBOL(mcount); #endif diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S index 3aa14dc..06269ea 100644 --- a/arch/arm/kernel/entry-common.S +++ b/arch/arm/kernel/entry-common.S @@ -101,7 +101,7 @@ ENDPROC(ret_from_fork) #undef CALL #define CALL(x) .long x -#ifdef CONFIG_FTRACE +#ifdef CONFIG_FUNCTION_TRACER #ifdef CONFIG_DYNAMIC_FTRACE ENTRY(mcount) stmdb sp!, {r0-r3, lr} @@ -149,7 +149,7 @@ trace: ftrace_stub: mov pc, lr -#endif /* CONFIG_FTRACE */ +#endif /* CONFIG_FUNCTION_TRACER */ /*============================================================================= * SWI handler diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 9391199..441ce06 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -112,7 +112,7 @@ config PPC bool default y select HAVE_DYNAMIC_FTRACE - select HAVE_FTRACE + select HAVE_FUNCTION_TRACER select ARCH_WANT_OPTIONAL_GPIOLIB select HAVE_IDE select HAVE_IOREMAP_PROT diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile index 24dd1a3..1f06670 100644 --- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -122,7 +122,7 @@ KBUILD_CFLAGS += -mcpu=powerpc endif # Work around a gcc code-gen bug with -fno-omit-frame-pointer. -ifeq ($(CONFIG_FTRACE),y) +ifeq ($(CONFIG_FUNCTION_TRACER),y) KBUILD_CFLAGS += -mno-sched-epilog endif diff --git a/arch/powerpc/include/asm/ftrace.h b/arch/powerpc/include/asm/ftrace.h index de92132..b298f7a 100644 --- a/arch/powerpc/include/asm/ftrace.h +++ b/arch/powerpc/include/asm/ftrace.h @@ -1,7 +1,7 @@ #ifndef _ASM_POWERPC_FTRACE #define _ASM_POWERPC_FTRACE -#ifdef CONFIG_FTRACE +#ifdef CONFIG_FUNCTION_TRACER #define MCOUNT_ADDR ((long)(_mcount)) #define MCOUNT_INSN_SIZE 4 /* sizeof mcount call */ diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile index fdb5825..92673b4 100644 --- a/arch/powerpc/kernel/Makefile +++ b/arch/powerpc/kernel/Makefile @@ -12,7 +12,7 @@ CFLAGS_prom_init.o += -fPIC CFLAGS_btext.o += -fPIC endif -ifdef CONFIG_FTRACE +ifdef CONFIG_FUNCTION_TRACER # Do not trace early boot code CFLAGS_REMOVE_cputable.o = -pg -mno-sched-epilog CFLAGS_REMOVE_prom_init.o = -pg -mno-sched-epilog diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S index 1cbbf70..7ecc0d1 100644 --- a/arch/powerpc/kernel/entry_32.S +++ b/arch/powerpc/kernel/entry_32.S @@ -1158,7 +1158,7 @@ machine_check_in_rtas: #endif /* CONFIG_PPC_RTAS */ -#ifdef CONFIG_FTRACE +#ifdef CONFIG_FUNCTION_TRACER #ifdef CONFIG_DYNAMIC_FTRACE _GLOBAL(mcount) _GLOBAL(_mcount) diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S index fd8b4ba..e6d5284 100644 --- a/arch/powerpc/kernel/entry_64.S +++ b/arch/powerpc/kernel/entry_64.S @@ -884,7 +884,7 @@ _GLOBAL(enter_prom) mtlr r0 blr -#ifdef CONFIG_FTRACE +#ifdef CONFIG_FUNCTION_TRACER #ifdef CONFIG_DYNAMIC_FTRACE _GLOBAL(mcount) _GLOBAL(_mcount) diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c index 8edc235..260089d 100644 --- a/arch/powerpc/kernel/ppc_ksyms.c +++ b/arch/powerpc/kernel/ppc_ksyms.c @@ -68,7 +68,7 @@ EXPORT_SYMBOL(single_step_exception); EXPORT_SYMBOL(sys_sigreturn); #endif -#ifdef CONFIG_FTRACE +#ifdef CONFIG_FUNCTION_TRACER EXPORT_SYMBOL(_mcount); #endif diff --git a/arch/powerpc/platforms/powermac/Makefile b/arch/powerpc/platforms/powermac/Makefile index be60d64..50f1693 100644 --- a/arch/powerpc/platforms/powermac/Makefile +++ b/arch/powerpc/platforms/powermac/Makefile @@ -1,6 +1,6 @@ CFLAGS_bootx_init.o += -fPIC -ifdef CONFIG_FTRACE +ifdef CONFIG_FUNCTION_TRACER # Do not trace early boot code CFLAGS_REMOVE_bootx_init.o = -pg -mno-sched-epilog endif diff --git a/arch/sparc64/Kconfig b/arch/sparc64/Kconfig index 035b15a..824f612 100644 --- a/arch/sparc64/Kconfig +++ b/arch/sparc64/Kconfig @@ -12,7 +12,7 @@ config SPARC64 bool default y select HAVE_DYNAMIC_FTRACE - select HAVE_FTRACE + select HAVE_FUNCTION_TRACER select HAVE_IDE select HAVE_LMB select HAVE_ARCH_KGDB diff --git a/arch/sparc64/Kconfig.debug b/arch/sparc64/Kconfig.debug index d6d32d1..c40515c 100644 --- a/arch/sparc64/Kconfig.debug +++ b/arch/sparc64/Kconfig.debug @@ -33,7 +33,7 @@ config DEBUG_PAGEALLOC config MCOUNT bool - depends on STACK_DEBUG || FTRACE + depends on STACK_DEBUG || FUNCTION_TRACER default y config FRAME_POINTER diff --git a/arch/sparc64/lib/mcount.S b/arch/sparc64/lib/mcount.S index fad90dd..7ce9c65 100644 --- a/arch/sparc64/lib/mcount.S +++ b/arch/sparc64/lib/mcount.S @@ -93,7 +93,7 @@ mcount: nop 1: #endif -#ifdef CONFIG_FTRACE +#ifdef CONFIG_FUNCTION_TRACER #ifdef CONFIG_DYNAMIC_FTRACE mov %o7, %o0 .globl mcount_call @@ -119,7 +119,7 @@ mcount_call: .size _mcount,.-_mcount .size mcount,.-mcount -#ifdef CONFIG_FTRACE +#ifdef CONFIG_FUNCTION_TRACER .globl ftrace_stub .type ftrace_stub,#function ftrace_stub: diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 5b9b123..100325c 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -28,7 +28,7 @@ config X86 select HAVE_KRETPROBES select HAVE_FTRACE_MCOUNT_RECORD select HAVE_DYNAMIC_FTRACE - select HAVE_FTRACE + select HAVE_FUNCTION_TRACER select HAVE_KVM if ((X86_32 && !X86_VOYAGER && !X86_VISWS && !X86_NUMAQ) || X86_64) select HAVE_ARCH_KGDB if !X86_VOYAGER select HAVE_ARCH_TRACEHOOK diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile index d7e5a58..f1283fe 100644 --- a/arch/x86/kernel/Makefile +++ b/arch/x86/kernel/Makefile @@ -6,7 +6,7 @@ extra-y := head_$(BITS).o head$(BITS).o head.o init_task.o vmlinu CPPFLAGS_vmlinux.lds += -U$(UTS_MACHINE) -ifdef CONFIG_FTRACE +ifdef CONFIG_FUNCTION_TRACER # Do not profile debug and lowlevel utilities CFLAGS_REMOVE_tsc.o = -pg CFLAGS_REMOVE_rtc.o = -pg diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S index c356423..008cc17 100644 --- a/arch/x86/kernel/entry_32.S +++ b/arch/x86/kernel/entry_32.S @@ -1149,7 +1149,7 @@ ENDPROC(xen_failsafe_callback) #endif /* CONFIG_XEN */ -#ifdef CONFIG_FTRACE +#ifdef CONFIG_FUNCTION_TRACER #ifdef CONFIG_DYNAMIC_FTRACE ENTRY(mcount) @@ -1204,7 +1204,7 @@ trace: jmp ftrace_stub END(mcount) #endif /* CONFIG_DYNAMIC_FTRACE */ -#endif /* CONFIG_FTRACE */ +#endif /* CONFIG_FUNCTION_TRACER */ .section .rodata,"a" #include "syscall_table_32.S" diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S index 09e7145..b86f332 100644 --- a/arch/x86/kernel/entry_64.S +++ b/arch/x86/kernel/entry_64.S @@ -61,7 +61,7 @@ .code64 -#ifdef CONFIG_FTRACE +#ifdef CONFIG_FUNCTION_TRACER #ifdef CONFIG_DYNAMIC_FTRACE ENTRY(mcount) retq @@ -138,7 +138,7 @@ trace: jmp ftrace_stub END(mcount) #endif /* CONFIG_DYNAMIC_FTRACE */ -#endif /* CONFIG_FTRACE */ +#endif /* CONFIG_FUNCTION_TRACER */ #ifndef CONFIG_PREEMPT #define retint_kernel retint_restore_args diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c index d073d98..8821cea 100644 --- a/arch/x86/kernel/ftrace.c +++ b/arch/x86/kernel/ftrace.c @@ -62,6 +62,7 @@ ftrace_modify_code(unsigned long ip, unsigned char *old_code, unsigned char *new_code) { unsigned char replaced[MCOUNT_INSN_SIZE]; + int ret; /* * Note: Due to modules and __init, code can @@ -77,8 +78,9 @@ ftrace_modify_code(unsigned long ip, unsigned char *old_code, if (memcmp(replaced, old_code, MCOUNT_INSN_SIZE) != 0) return 2; - WARN_ON_ONCE(__copy_to_user_inatomic((char __user *)ip, new_code, - MCOUNT_INSN_SIZE)); + ret = __copy_to_user_inatomic((char __user *)ip, new_code, + MCOUNT_INSN_SIZE); + WARN_ON_ONCE(ret); sync_core(); diff --git a/arch/x86/kernel/i386_ksyms_32.c b/arch/x86/kernel/i386_ksyms_32.c index dd7ebee..43cec6b 100644 --- a/arch/x86/kernel/i386_ksyms_32.c +++ b/arch/x86/kernel/i386_ksyms_32.c @@ -5,7 +5,7 @@ #include <asm/desc.h> #include <asm/ftrace.h> -#ifdef CONFIG_FTRACE +#ifdef CONFIG_FUNCTION_TRACER /* mcount is defined in assembly */ EXPORT_SYMBOL(mcount); #endif diff --git a/arch/x86/kernel/x8664_ksyms_64.c b/arch/x86/kernel/x8664_ksyms_64.c index b545f37..695e426 100644 --- a/arch/x86/kernel/x8664_ksyms_64.c +++ b/arch/x86/kernel/x8664_ksyms_64.c @@ -12,7 +12,7 @@ #include <asm/desc.h> #include <asm/ftrace.h> -#ifdef CONFIG_FTRACE +#ifdef CONFIG_FUNCTION_TRACER /* mcount is defined in assembly */ EXPORT_SYMBOL(mcount); #endif diff --git a/arch/x86/xen/Makefile b/arch/x86/xen/Makefile index 3139479..6dcefba 100644 --- a/arch/x86/xen/Makefile +++ b/arch/x86/xen/Makefile @@ -1,4 +1,4 @@ -ifdef CONFIG_FTRACE +ifdef CONFIG_FUNCTION_TRACER # Do not profile debug and lowlevel utilities CFLAGS_REMOVE_spinlock.o = -pg CFLAGS_REMOVE_time.o = -pg diff --git a/include/asm-x86/ftrace.h b/include/asm-x86/ftrace.h index 1bb6f9bb..233bb9b 100644 --- a/include/asm-x86/ftrace.h +++ b/include/asm-x86/ftrace.h @@ -1,7 +1,7 @@ #ifndef ASM_X86__FTRACE_H #define ASM_X86__FTRACE_H -#ifdef CONFIG_FTRACE +#ifdef CONFIG_FUNCTION_TRACER #define MCOUNT_ADDR ((long)(mcount)) #define MCOUNT_INSN_SIZE 5 /* sizeof mcount call */ @@ -19,6 +19,6 @@ static inline unsigned long ftrace_call_adjust(unsigned long addr) } #endif -#endif /* CONFIG_FTRACE */ +#endif /* CONFIG_FUNCTION_TRACER */ #endif /* ASM_X86__FTRACE_H */ diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index a3d4615..0e95295 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -8,7 +8,7 @@ #include <linux/types.h> #include <linux/kallsyms.h> -#ifdef CONFIG_FTRACE +#ifdef CONFIG_FUNCTION_TRACER extern int ftrace_enabled; extern int @@ -36,12 +36,12 @@ void clear_ftrace_function(void); extern void ftrace_stub(unsigned long a0, unsigned long a1); -#else /* !CONFIG_FTRACE */ +#else /* !CONFIG_FUNCTION_TRACER */ # define register_ftrace_function(ops) do { } while (0) # define unregister_ftrace_function(ops) do { } while (0) # define clear_ftrace_function(ops) do { } while (0) static inline void ftrace_kill_atomic(void) { } -#endif /* CONFIG_FTRACE */ +#endif /* CONFIG_FUNCTION_TRACER */ #ifdef CONFIG_DYNAMIC_FTRACE # define FTRACE_HASHBITS 10 @@ -101,7 +101,7 @@ void ftrace_kill_atomic(void); static inline void tracer_disable(void) { -#ifdef CONFIG_FTRACE +#ifdef CONFIG_FUNCTION_TRACER ftrace_enabled = 0; #endif } @@ -113,7 +113,7 @@ static inline void tracer_disable(void) */ static inline int __ftrace_enabled_save(void) { -#ifdef CONFIG_FTRACE +#ifdef CONFIG_FUNCTION_TRACER int saved_ftrace_enabled = ftrace_enabled; ftrace_enabled = 0; return saved_ftrace_enabled; @@ -124,7 +124,7 @@ static inline int __ftrace_enabled_save(void) static inline void __ftrace_enabled_restore(int enabled) { -#ifdef CONFIG_FTRACE +#ifdef CONFIG_FUNCTION_TRACER ftrace_enabled = enabled; #endif } diff --git a/kernel/Makefile b/kernel/Makefile index 305f11d..9a3ec66 100644 --- a/kernel/Makefile +++ b/kernel/Makefile @@ -13,7 +13,7 @@ obj-y = sched.o fork.o exec_domain.o panic.o printk.o \ CFLAGS_REMOVE_sched.o = -mno-spe -ifdef CONFIG_FTRACE +ifdef CONFIG_FUNCTION_TRACER # Do not trace debug files and internal ftrace files CFLAGS_REMOVE_lockdep.o = -pg CFLAGS_REMOVE_lockdep_proc.o = -pg @@ -88,7 +88,7 @@ obj-$(CONFIG_MARKERS) += marker.o obj-$(CONFIG_TRACEPOINTS) += tracepoint.o obj-$(CONFIG_LATENCYTOP) += latencytop.o obj-$(CONFIG_HAVE_GENERIC_DMA_COHERENT) += dma-coherent.o -obj-$(CONFIG_FTRACE) += trace/ +obj-$(CONFIG_FUNCTION_TRACER) += trace/ obj-$(CONFIG_TRACING) += trace/ obj-$(CONFIG_SMP) += sched_cpupri.o diff --git a/kernel/sysctl.c b/kernel/sysctl.c index b3cc739..edb1075 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -464,7 +464,7 @@ static struct ctl_table kern_table[] = { .mode = 0644, .proc_handler = &proc_dointvec, }, -#ifdef CONFIG_FTRACE +#ifdef CONFIG_FUNCTION_TRACER { .ctl_name = CTL_UNNUMBERED, .procname = "ftrace_enabled", diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig index 1cb3e1f..3533c58 100644 --- a/kernel/trace/Kconfig +++ b/kernel/trace/Kconfig @@ -1,11 +1,12 @@ # -# Architectures that offer an FTRACE implementation should select HAVE_FTRACE: +# Architectures that offer an FUNCTION_TRACER implementation should +# select HAVE_FUNCTION_TRACER: # config NOP_TRACER bool -config HAVE_FTRACE +config HAVE_FUNCTION_TRACER bool select NOP_TRACER @@ -28,9 +29,9 @@ config TRACING select STACKTRACE select TRACEPOINTS -config FTRACE +config FUNCTION_TRACER bool "Kernel Function Tracer" - depends on HAVE_FTRACE + depends on HAVE_FUNCTION_TRACER depends on DEBUG_KERNEL select FRAME_POINTER select TRACING @@ -49,7 +50,6 @@ config IRQSOFF_TRACER default n depends on TRACE_IRQFLAGS_SUPPORT depends on GENERIC_TIME - depends on HAVE_FTRACE depends on DEBUG_KERNEL select TRACE_IRQFLAGS select TRACING @@ -73,7 +73,6 @@ config PREEMPT_TRACER default n depends on GENERIC_TIME depends on PREEMPT - depends on HAVE_FTRACE depends on DEBUG_KERNEL select TRACING select TRACER_MAX_TRACE @@ -101,7 +100,6 @@ config SYSPROF_TRACER config SCHED_TRACER bool "Scheduling Latency Tracer" - depends on HAVE_FTRACE depends on DEBUG_KERNEL select TRACING select CONTEXT_SWITCH_TRACER @@ -112,7 +110,6 @@ config SCHED_TRACER config CONTEXT_SWITCH_TRACER bool "Trace process context switches" - depends on HAVE_FTRACE depends on DEBUG_KERNEL select TRACING select MARKERS @@ -122,7 +119,6 @@ config CONTEXT_SWITCH_TRACER config BOOT_TRACER bool "Trace boot initcalls" - depends on HAVE_FTRACE depends on DEBUG_KERNEL select TRACING help @@ -141,9 +137,9 @@ config BOOT_TRACER config STACK_TRACER bool "Trace max stack" - depends on HAVE_FTRACE + depends on HAVE_FUNCTION_TRACER depends on DEBUG_KERNEL - select FTRACE + select FUNCTION_TRACER select STACKTRACE help This special tracer records the maximum stack footprint of the @@ -160,7 +156,7 @@ config STACK_TRACER config DYNAMIC_FTRACE bool "enable/disable ftrace tracepoints dynamically" - depends on FTRACE + depends on FUNCTION_TRACER depends on HAVE_DYNAMIC_FTRACE depends on DEBUG_KERNEL default y @@ -170,7 +166,7 @@ config DYNAMIC_FTRACE with a No-Op instruction) as they are called. A table is created to dynamically enable them again. - This way a CONFIG_FTRACE kernel is slightly larger, but otherwise + This way a CONFIG_FUNCTION_TRACER kernel is slightly larger, but otherwise has native performance as long as no tracing is active. The changes to the code are done by a kernel thread that diff --git a/kernel/trace/Makefile b/kernel/trace/Makefile index a85dfba..c8228b1 100644 --- a/kernel/trace/Makefile +++ b/kernel/trace/Makefile @@ -1,7 +1,7 @@ # Do not instrument the tracer itself: -ifdef CONFIG_FTRACE +ifdef CONFIG_FUNCTION_TRACER ORIG_CFLAGS := $(KBUILD_CFLAGS) KBUILD_CFLAGS = $(subst -pg,,$(ORIG_CFLAGS)) @@ -10,13 +10,13 @@ CFLAGS_trace_selftest_dynamic.o = -pg obj-y += trace_selftest_dynamic.o endif -obj-$(CONFIG_FTRACE) += libftrace.o +obj-$(CONFIG_FUNCTION_TRACER) += libftrace.o obj-$(CONFIG_RING_BUFFER) += ring_buffer.o obj-$(CONFIG_TRACING) += trace.o obj-$(CONFIG_CONTEXT_SWITCH_TRACER) += trace_sched_switch.o obj-$(CONFIG_SYSPROF_TRACER) += trace_sysprof.o -obj-$(CONFIG_FTRACE) += trace_functions.o +obj-$(CONFIG_FUNCTION_TRACER) += trace_functions.o obj-$(CONFIG_IRQSOFF_TRACER) += trace_irqsoff.o obj-$(CONFIG_PREEMPT_TRACER) += trace_irqsoff.o obj-$(CONFIG_SCHED_TRACER) += trace_sched_wakeup.o diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 4dda4f6..1f54a94 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -164,10 +164,14 @@ static DEFINE_SPINLOCK(ftrace_hash_lock); #define ftrace_hash_lock(flags) spin_lock_irqsave(&ftrace_hash_lock, flags) #define ftrace_hash_unlock(flags) \ spin_unlock_irqrestore(&ftrace_hash_lock, flags) +static void ftrace_release_hash(unsigned long start, unsigned long end); #else /* This is protected via the ftrace_lock with MCOUNT_RECORD. */ #define ftrace_hash_lock(flags) do { (void)(flags); } while (0) #define ftrace_hash_unlock(flags) do { } while(0) +static inline void ftrace_release_hash(unsigned long start, unsigned long end) +{ +} #endif /* @@ -347,6 +351,7 @@ void ftrace_release(void *start, unsigned long size) } spin_unlock(&ftrace_lock); + ftrace_release_hash(s, e); } static struct dyn_ftrace *ftrace_alloc_dyn_node(unsigned long ip) @@ -1659,6 +1664,44 @@ void __init ftrace_init(void) ftrace_disabled = 1; } #else /* CONFIG_FTRACE_MCOUNT_RECORD */ + +static void ftrace_release_hash(unsigned long start, unsigned long end) +{ + struct dyn_ftrace *rec; + struct hlist_node *t, *n; + struct hlist_head *head, temp_list; + unsigned long flags; + int i, cpu; + + preempt_disable_notrace(); + + /* disable incase we call something that calls mcount */ + cpu = raw_smp_processor_id(); + per_cpu(ftrace_shutdown_disable_cpu, cpu)++; + + ftrace_hash_lock(flags); + + for (i = 0; i < FTRACE_HASHSIZE; i++) { + INIT_HLIST_HEAD(&temp_list); + head = &ftrace_hash[i]; + + /* all CPUS are stopped, we are safe to modify code */ + hlist_for_each_entry_safe(rec, t, n, head, node) { + if (rec->flags & FTRACE_FL_FREE) + continue; + + if ((rec->ip >= start) && (rec->ip < end)) + ftrace_free_rec(rec); + } + } + + ftrace_hash_unlock(flags); + + per_cpu(ftrace_shutdown_disable_cpu, cpu)--; + preempt_enable_notrace(); + +} + static int ftraced(void *ignore) { unsigned long usecs; diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index d345d64..aeb2f25 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -851,7 +851,7 @@ ftrace_special(unsigned long arg1, unsigned long arg2, unsigned long arg3) preempt_enable_notrace(); } -#ifdef CONFIG_FTRACE +#ifdef CONFIG_FUNCTION_TRACER static void function_trace_call(unsigned long ip, unsigned long parent_ip) { diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index f1f9957..6889ca4 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -335,7 +335,7 @@ void update_max_tr_single(struct trace_array *tr, extern cycle_t ftrace_now(int cpu); -#ifdef CONFIG_FTRACE +#ifdef CONFIG_FUNCTION_TRACER void tracing_start_function_trace(void); void tracing_stop_function_trace(void); #else diff --git a/kernel/trace/trace_functions.c b/kernel/trace/trace_functions.c index e90eb0c..0f85a64 100644 --- a/kernel/trace/trace_functions.c +++ b/kernel/trace/trace_functions.c @@ -64,7 +64,7 @@ static void function_trace_ctrl_update(struct trace_array *tr) static struct tracer function_trace __read_mostly = { - .name = "ftrace", + .name = "function", .init = function_trace_init, .reset = function_trace_reset, .ctrl_update = function_trace_ctrl_update, diff --git a/kernel/trace/trace_irqsoff.c b/kernel/trace/trace_irqsoff.c index a7db7f0..9c74071 100644 --- a/kernel/trace/trace_irqsoff.c +++ b/kernel/trace/trace_irqsoff.c @@ -63,7 +63,7 @@ irq_trace(void) */ static __cacheline_aligned_in_smp unsigned long max_sequence; -#ifdef CONFIG_FTRACE +#ifdef CONFIG_FUNCTION_TRACER /* * irqsoff uses its own tracer function to keep the overhead down: */ @@ -104,7 +104,7 @@ static struct ftrace_ops trace_ops __read_mostly = { .func = irqsoff_tracer_call, }; -#endif /* CONFIG_FTRACE */ +#endif /* CONFIG_FUNCTION_TRACER */ /* * Should this new latency be reported/recorded? diff --git a/kernel/trace/trace_sched_wakeup.c b/kernel/trace/trace_sched_wakeup.c index fe4a252..3ae93f1 100644 --- a/kernel/trace/trace_sched_wakeup.c +++ b/kernel/trace/trace_sched_wakeup.c @@ -31,7 +31,7 @@ static raw_spinlock_t wakeup_lock = static void __wakeup_reset(struct trace_array *tr); -#ifdef CONFIG_FTRACE +#ifdef CONFIG_FUNCTION_TRACER /* * irqsoff uses its own tracer function to keep the overhead down: */ @@ -96,7 +96,7 @@ static struct ftrace_ops trace_ops __read_mostly = { .func = wakeup_tracer_call, }; -#endif /* CONFIG_FTRACE */ +#endif /* CONFIG_FUNCTION_TRACER */ /* * Should this new latency be reported/recorded? diff --git a/kernel/trace/trace_selftest.c b/kernel/trace/trace_selftest.c index 09cf230..95815d2 100644 --- a/kernel/trace/trace_selftest.c +++ b/kernel/trace/trace_selftest.c @@ -70,7 +70,7 @@ static int trace_test_buffer(struct trace_array *tr, unsigned long *count) return ret; } -#ifdef CONFIG_FTRACE +#ifdef CONFIG_FUNCTION_TRACER #ifdef CONFIG_DYNAMIC_FTRACE @@ -226,7 +226,7 @@ trace_selftest_startup_function(struct tracer *trace, struct trace_array *tr) return ret; } -#endif /* CONFIG_FTRACE */ +#endif /* CONFIG_FUNCTION_TRACER */ #ifdef CONFIG_IRQSOFF_TRACER int diff --git a/kernel/trace/trace_stack.c b/kernel/trace/trace_stack.c index 74c5d9a..be682b6 100644 --- a/kernel/trace/trace_stack.c +++ b/kernel/trace/trace_stack.c @@ -44,6 +44,10 @@ static inline void check_stack(void) if (this_size <= max_stack_size) return; + /* we do not handle interrupt stacks yet */ + if (!object_is_on_stack(&this_size)) + return; + raw_local_irq_save(flags); __raw_spin_lock(&max_stack_lock); diff --git a/lib/Makefile b/lib/Makefile index 16feaab..7cb65d8 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -2,7 +2,7 @@ # Makefile for some libs needed in the kernel. # -ifdef CONFIG_FTRACE +ifdef CONFIG_FUNCTION_TRACER ORIG_CFLAGS := $(KBUILD_CFLAGS) KBUILD_CFLAGS = $(subst -pg,,$(ORIG_CFLAGS)) endif |
