diff options
56 files changed, 618 insertions, 330 deletions
diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt index daabdd7..a3683ce 100644 --- a/Documentation/sysctl/kernel.txt +++ b/Documentation/sysctl/kernel.txt @@ -61,6 +61,7 @@ show up in /proc/sys/kernel: - perf_cpu_time_max_percent - perf_event_paranoid - perf_event_max_stack +- perf_event_max_contexts_per_stack - pid_max - powersave-nap [ PPC only ] - printk @@ -668,6 +669,19 @@ The default value is 127. ============================================================== +perf_event_max_contexts_per_stack: + +Controls maximum number of stack frame context entries for +(attr.sample_type & PERF_SAMPLE_CALLCHAIN) configured events, for +instance, when using 'perf record -g' or 'perf trace --call-graph fp'. + +This can only be done when no events are in use that have callchains +enabled, otherwise writing to this file will return -EBUSY. + +The default value is 8. + +============================================================== + pid_max: PID allocation wrap value. When the kernel's next PID value diff --git a/MAINTAINERS b/MAINTAINERS index 7fb2603..ab7e05d 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -8881,6 +8881,7 @@ F: arch/*/kernel/*/perf_event*.c F: arch/*/kernel/*/*/perf_event*.c F: arch/*/include/asm/perf_event.h F: arch/*/kernel/perf_callchain.c +F: arch/*/events/* F: tools/perf/ PERSONALITY HANDLING diff --git a/arch/arc/kernel/perf_event.c b/arch/arc/kernel/perf_event.c index 8b134cf..6fd4802 100644 --- a/arch/arc/kernel/perf_event.c +++ b/arch/arc/kernel/perf_event.c @@ -48,7 +48,7 @@ struct arc_callchain_trace { static int callchain_trace(unsigned int addr, void *data) { struct arc_callchain_trace *ctrl = data; - struct perf_callchain_entry *entry = ctrl->perf_stuff; + struct perf_callchain_entry_ctx *entry = ctrl->perf_stuff; perf_callchain_store(entry, addr); if (ctrl->depth++ < 3) @@ -58,7 +58,7 @@ static int callchain_trace(unsigned int addr, void *data) } void -perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs) +perf_callchain_kernel(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) { struct arc_callchain_trace ctrl = { .depth = 0, @@ -69,7 +69,7 @@ perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs) } void -perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs) +perf_callchain_user(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) { /* * User stack can't be unwound trivially with kernel dwarf unwinder diff --git a/arch/arm/kernel/perf_callchain.c b/arch/arm/kernel/perf_callchain.c index 27563be..22bf1f6 100644 --- a/arch/arm/kernel/perf_callchain.c +++ b/arch/arm/kernel/perf_callchain.c @@ -31,7 +31,7 @@ struct frame_tail { */ static struct frame_tail __user * user_backtrace(struct frame_tail __user *tail, - struct perf_callchain_entry *entry) + struct perf_callchain_entry_ctx *entry) { struct frame_tail buftail; unsigned long err; @@ -59,7 +59,7 @@ user_backtrace(struct frame_tail __user *tail, } void -perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs) +perf_callchain_user(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) { struct frame_tail __user *tail; @@ -75,7 +75,7 @@ perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs) tail = (struct frame_tail __user *)regs->ARM_fp - 1; - while ((entry->nr < sysctl_perf_event_max_stack) && + while ((entry->nr < entry->max_stack) && tail && !((unsigned long)tail & 0x3)) tail = user_backtrace(tail, entry); } @@ -89,13 +89,13 @@ static int callchain_trace(struct stackframe *fr, void *data) { - struct perf_callchain_entry *entry = data; + struct perf_callchain_entry_ctx *entry = data; perf_callchain_store(entry, fr->pc); return 0; } void -perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs) +perf_callchain_kernel(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) { struct stackframe fr; diff --git a/arch/arm64/kernel/perf_callchain.c b/arch/arm64/kernel/perf_callchain.c index 32c3c6e..713ca82 100644 --- a/arch/arm64/kernel/perf_callchain.c +++ b/arch/arm64/kernel/perf_callchain.c @@ -31,7 +31,7 @@ struct frame_tail { */ static struct frame_tail __user * user_backtrace(struct frame_tail __user *tail, - struct perf_callchain_entry *entry) + struct perf_callchain_entry_ctx *entry) { struct frame_tail buftail; unsigned long err; @@ -76,7 +76,7 @@ struct compat_frame_tail { static struct compat_frame_tail __user * compat_user_backtrace(struct compat_frame_tail __user *tail, - struct perf_callchain_entry *entry) + struct perf_callchain_entry_ctx *entry) { struct compat_frame_tail buftail; unsigned long err; @@ -106,7 +106,7 @@ compat_user_backtrace(struct compat_frame_tail __user *tail, } #endif /* CONFIG_COMPAT */ -void perf_callchain_user(struct perf_callchain_entry *entry, +void perf_callchain_user(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) { if (perf_guest_cbs && perf_guest_cbs->is_in_guest()) { @@ -122,7 +122,7 @@ void perf_callchain_user(struct perf_callchain_entry *entry, tail = (struct frame_tail __user *)regs->regs[29]; - while (entry->nr < sysctl_perf_event_max_stack && + while (entry->nr < entry->max_stack && tail && !((unsigned long)tail & 0xf)) tail = user_backtrace(tail, entry); } else { @@ -132,7 +132,7 @@ void perf_callchain_user(struct perf_callchain_entry *entry, tail = (struct compat_frame_tail __user *)regs->compat_fp - 1; - while ((entry->nr < sysctl_perf_event_max_stack) && + while ((entry->nr < entry->max_stack) && tail && !((unsigned long)tail & 0x3)) tail = compat_user_backtrace(tail, entry); #endif @@ -146,12 +146,12 @@ void perf_callchain_user(struct perf_callchain_entry *entry, */ static int callchain_trace(struct stackframe *frame, void *data) { - struct perf_callchain_entry *entry = data; + struct perf_callchain_entry_ctx *entry = data; perf_callchain_store(entry, frame->pc); return 0; } -void perf_callchain_kernel(struct perf_callchain_entry *entry, +void perf_callchain_kernel(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) { struct stackframe frame; diff --git a/arch/metag/kernel/perf_callchain.c b/arch/metag/kernel/perf_callchain.c index 252abc1..3e8e048 100644 --- a/arch/metag/kernel/perf_callchain.c +++ b/arch/metag/kernel/perf_callchain.c @@ -29,7 +29,7 @@ static bool is_valid_call(unsigned long calladdr) static struct metag_frame __user * user_backtrace(struct metag_frame __user *user_frame, - struct perf_callchain_entry *entry) + struct perf_callchain_entry_ctx *entry) { struct metag_frame frame; unsigned long calladdr; @@ -56,7 +56,7 @@ user_backtrace(struct metag_frame __user *user_frame, } void -perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs) +perf_callchain_user(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) { unsigned long sp = regs->ctx.AX[0].U0; struct metag_frame __user *frame; @@ -65,7 +65,7 @@ perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs) --frame; - while ((entry->nr < sysctl_perf_event_max_stack) && frame) + while ((entry->nr < entry->max_stack) && frame) frame = user_backtrace(frame, entry); } @@ -78,13 +78,13 @@ static int callchain_trace(struct stackframe *fr, void *data) { - struct perf_callchain_entry *entry = data; + struct perf_callchain_entry_ctx *entry = data; perf_callchain_store(entry, fr->pc); return 0; } void -perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs) +perf_callchain_kernel(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) { struct stackframe fr; diff --git a/arch/mips/kernel/perf_event.c b/arch/mips/kernel/perf_event.c index 5021c54..d64056e 100644 --- a/arch/mips/kernel/perf_event.c +++ b/arch/mips/kernel/perf_event.c @@ -25,8 +25,8 @@ * the user stack callchains, we will add it here. */ -static void save_raw_perf_callchain(struct perf_callchain_entry *entry, - unsigned long reg29) +static void save_raw_perf_callchain(struct perf_callchain_entry_ctx *entry, + unsigned long reg29) { unsigned long *sp = (unsigned long *)reg29; unsigned long addr; @@ -35,14 +35,14 @@ static void save_raw_perf_callchain(struct perf_callchain_entry *entry, addr = *sp++; if (__kernel_text_address(addr)) { perf_callchain_store(entry, addr); - if (entry->nr >= sysctl_perf_event_max_stack) + if (entry->nr >= entry->max_stack) break; } } } -void perf_callchain_kernel(struct perf_callchain_entry *entry, - struct pt_regs *regs) +void perf_callchain_kernel(struct perf_callchain_entry_ctx *entry, + struct pt_regs *regs) { unsigned long sp = regs->regs[29]; #ifdef CONFIG_KALLSYMS @@ -59,7 +59,7 @@ void perf_callchain_kernel(struct perf_callchain_entry *entry, } do { perf_callchain_store(entry, pc); - if (entry->nr >= sysctl_perf_event_max_stack) + if (entry->nr >= entry->max_stack) break; pc = unwind_stack(current, &sp, pc, &ra); } while (pc); diff --git a/arch/powerpc/perf/callchain.c b/arch/powerpc/perf/callchain.c index 26d37e6..0fc2671 100644 --- a/arch/powerpc/perf/callchain.c +++ b/arch/powerpc/perf/callchain.c @@ -47,7 +47,7 @@ static int valid_next_sp(unsigned long sp, unsigned long prev_sp) } void -perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs) +perf_callchain_kernel(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) { unsigned long sp, next_sp; unsigned long next_ip; @@ -76,7 +76,7 @@ perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs) next_ip = regs->nip; lr = regs->link; level = 0; - perf_callchain_store(entry, PERF_CONTEXT_KERNEL); + perf_callchain_store_context(entry, PERF_CONTEXT_KERNEL); } else { if (level == 0) @@ -232,7 +232,7 @@ static int sane_signal_64_frame(unsigned long sp) puc == (unsigned long) &sf->uc; } -static void perf_callchain_user_64(struct perf_callchain_entry *entry, +static void perf_callchain_user_64(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) { unsigned long sp, next_sp; @@ -247,7 +247,7 @@ static void perf_callchain_user_64(struct perf_callchain_entry *entry, sp = regs->gpr[1]; perf_callchain_store(entry, next_ip); - while (entry->nr < sysctl_perf_event_max_stack) { + while (entry->nr < entry->max_stack) { fp = (unsigned long __user *) sp; if (!valid_user_sp(sp, 1) || read_user_stack_64(fp, &next_sp)) return; @@ -274,7 +274,7 @@ static void perf_callchain_user_64(struct perf_callchain_entry *entry, read_user_stack_64(&uregs[PT_R1], &sp)) return; level = 0; - perf_callchain_store(entry, PERF_CONTEXT_USER); + perf_callchain_store_context(entry, PERF_CONTEXT_USER); perf_callchain_store(entry, next_ip); continue; } @@ -319,7 +319,7 @@ static int read_user_stack_32(unsigned int __user *ptr, unsigned int *ret) return rc; } -static inline void perf_callchain_user_64(struct perf_callchain_entry *entry, +static inline void perf_callchain_user_64(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) { } @@ -439,7 +439,7 @@ static unsigned int __user *signal_frame_32_regs(unsigned int sp, return mctx->mc_gregs; } -static void perf_callchain_user_32(struct perf_callchain_entry *entry, +static void perf_callchain_user_32(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) { unsigned int sp, next_sp; @@ -453,7 +453,7 @@ static void perf_callchain_user_32(struct perf_callchain_entry *entry, sp = regs->gpr[1]; perf_callchain_store(entry, next_ip); - while (entry->nr < sysctl_perf_event_max_stack) { + while (entry->nr < entry->max_stack) { fp = (unsigned int __user *) (unsigned long) sp; if (!valid_user_sp(sp, 0) || read_user_stack_32(fp, &next_sp)) return; @@ -473,7 +473,7 @@ static void perf_callchain_user_32(struct perf_callchain_entry *entry, read_user_stack_32(&uregs[PT_R1], &sp)) return; level = 0; - perf_callchain_store(entry, PERF_CONTEXT_USER); + perf_callchain_store_context(entry, PERF_CONTEXT_USER); perf_callchain_store(entry, next_ip); continue; } @@ -487,7 +487,7 @@ static void perf_callchain_user_32(struct perf_callchain_entry *entry, } void -perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs) +perf_callchain_user(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) { if (current_is_64bit()) perf_callchain_user_64(entry, regs); diff --git a/arch/s390/kernel/perf_event.c b/arch/s390/kernel/perf_event.c index c3e4099..87035fa 100644 --- a/arch/s390/kernel/perf_event.c +++ b/arch/s390/kernel/perf_event.c @@ -224,13 +224,13 @@ arch_initcall(service_level_perf_register); static int __perf_callchain_kernel(void *data, unsigned long address) { - struct perf_callchain_entry *entry = data; + struct perf_callchain_entry_ctx *entry = data; perf_callchain_store(entry, address); return 0; } -void perf_callchain_kernel(struct perf_callchain_entry *entry, +void perf_callchain_kernel(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) { if (user_mode(regs)) diff --git a/arch/sh/kernel/perf_callchain.c b/arch/sh/kernel/perf_callchain.c index cc80b61..fa2c0cd 100644 --- a/arch/sh/kernel/perf_callchain.c +++ b/arch/sh/kernel/perf_callchain.c @@ -21,7 +21,7 @@ static int callchain_stack(void *data, char *name) static void callchain_address(void *data, unsigned long addr, int reliable) { - struct perf_callchain_entry *entry = data; + struct perf_callchain_entry_ctx *entry = data; if (reliable) perf_callchain_store(entry, addr); @@ -33,7 +33,7 @@ static const struct stacktrace_ops callchain_ops = { }; void -perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs) +perf_callchain_kernel(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) { perf_callchain_store(entry, regs->pc); diff --git a/arch/sparc/kernel/perf_event.c b/arch/sparc/kernel/perf_event.c index a4b8b5a..710f327 100644 --- a/arch/sparc/kernel/perf_event.c +++ b/arch/sparc/kernel/perf_event.c @@ -1711,7 +1711,7 @@ static int __init init_hw_perf_events(void) } pure_initcall(init_hw_perf_events); -void perf_callchain_kernel(struct perf_callchain_entry *entry, +void perf_callchain_kernel(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) { unsigned long ksp, fp; @@ -1756,7 +1756,7 @@ void perf_callchain_kernel(struct perf_callchain_entry *entry, } } #endif - } while (entry->nr < sysctl_perf_event_max_stack); + } while (entry->nr < entry->max_stack); } static inline int @@ -1769,7 +1769,7 @@ valid_user_frame(const void __user *fp, unsigned long size) return (__range_not_ok(fp, size, TASK_SIZE) == 0); } -static void perf_callchain_user_64(struct perf_callchain_entry *entry, +static void perf_callchain_user_64(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) { unsigned long ufp; @@ -1790,10 +1790,10 @@ static void perf_callchain_user_64(struct perf_callchain_entry *entry, pc = sf.callers_pc; ufp = (unsigned long)sf.fp + STACK_BIAS; perf_callchain_store(entry, pc); - } while (entry->nr < sysctl_perf_event_max_stack); + } while (entry->nr < entry->max_stack); } -static void perf_callchain_user_32(struct perf_callchain_entry *entry, +static void perf_callchain_user_32(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) { unsigned long ufp; @@ -1822,11 +1822,11 @@ static void perf_callchain_user_32(struct perf_callchain_entry *entry, ufp = (unsigned long)sf.fp; } perf_callchain_store(entry, pc); - } while (entry->nr < sysctl_perf_event_max_stack); + } while (entry->nr < entry->max_stack); } void -perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs) +perf_callchain_user(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) { u64 saved_fault_address = current_thread_info()->fault_address; u8 saved_fault_code = get_thread_fault_code(); diff --git a/arch/tile/kernel/perf_event.c b/arch/tile/kernel/perf_event.c index 8767060..6394c1c 100644 --- a/arch/tile/kernel/perf_event.c +++ b/arch/tile/kernel/perf_event.c @@ -941,7 +941,7 @@ arch_initcall(init_hw_perf_events); /* * Tile specific backtracing code for perf_events. */ -static inline void perf_callchain(struct perf_callchain_entry *entry, +static inline void perf_callchain(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) { struct KBacktraceIterator kbt; @@ -992,13 +992,13 @@ static inline void perf_callchain(struct perf_callchain_entry *entry, } } -void perf_callchain_user(struct perf_callchain_entry *entry, +void perf_callchain_user(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) { perf_callchain(entry, regs); } -void perf_callchain_kernel(struct perf_callchain_entry *entry, +void perf_callchain_kernel(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) { perf_callchain(entry, regs); diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c index 73a75aa..33787ee 100644 --- a/arch/x86/events/core.c +++ b/arch/x86/events/core.c @@ -2202,7 +2202,7 @@ static int backtrace_stack(void *data, char *name) static int backtrace_address(void *data, unsigned long addr, int reliable) { - struct perf_callchain_entry *entry = data; + struct perf_callchain_entry_ctx *entry = data; return perf_callchain_store(entry, addr); } @@ -2214,7 +2214,7 @@ static const struct stacktrace_ops backtrace_ops = { }; void -perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs) +perf_callchain_kernel(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) { if (perf_guest_cbs && perf_guest_cbs->is_in_guest()) { /* TODO: We don't support guest os callchain now */ @@ -2268,7 +2268,7 @@ static unsigned long get_segment_base(unsigned int segment) #include <asm/compat.h> static inline int -perf_callchain_user32(struct pt_regs *regs, struct perf_callchain_entry *entry) +perf_callchain_user32(struct pt_regs *regs, struct perf_callchain_entry_ctx *entry) { /* 32-bit process in 64-bit kernel. */ unsigned long ss_base, cs_base; @@ -2283,7 +2283,7 @@ perf_callchain_user32(struct pt_regs *regs, struct perf_callchain_entry *entry) fp = compat_ptr(ss_base + regs->bp); pagefault_disable(); - while (entry->nr < sysctl_perf_event_max_stack) { + while (entry->nr < entry->max_stack) { unsigned long bytes; frame.next_frame = 0; frame.return_address = 0; @@ -2309,14 +2309,14 @@ perf_callchain_user32(struct pt_regs *regs, struct perf_callchain_entry *entry) } #else static inline int -perf_callchain_user32(struct pt_regs *regs, struct perf_callchain_entry *entry) +perf_callchain_user32(struct pt_regs *regs, struct perf_callchain_entry_ctx *entry) { return 0; } #endif void -perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs) +perf_callchain_user(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) { struct stack_frame frame; const void __user *fp; @@ -2343,7 +2343,7 @@ perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs) return; pagefault_disable(); - while (entry->nr < sysctl_perf_event_max_stack) { + while (entry->nr < entry->max_stack) { unsigned long bytes; frame.next_frame = NULL; frame.return_address = 0; diff --git a/arch/x86/events/intel/p4.c b/arch/x86/events/intel/p4.c index 0a5ede1..eb05335 100644 --- a/arch/x86/events/intel/p4.c +++ b/arch/x86/events/intel/p4.c @@ -826,7 +826,7 @@ static int p4_hw_config(struct perf_event *event) * Clear bits we reserve to be managed by kernel itself * and never allowed from a user space */ - event->attr.config &= P4_CONFIG_MASK; + event->attr.config &= P4_CONFIG_MASK; rc = p4_validate_raw_event(event); if (rc) diff --git a/arch/x86/events/intel/uncore.c b/arch/x86/events/intel/uncore.c index 16c1789..fce7406 100644 --- a/arch/x86/events/intel/uncore.c +++ b/arch/x86/events/intel/uncore.c @@ -891,7 +891,7 @@ static int uncore_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id return -ENODEV; pkg = topology_phys_to_logical_pkg(phys_id); - if (WARN_ON_ONCE(pkg < 0)) + if (pkg < 0) return -EINVAL; if (UNCORE_PCI_DEV_TYPE(id->driver_data) == UNCORE_EXTRA_PCI_DEV) { diff --git a/arch/xtensa/kernel/perf_event.c b/arch/xtensa/kernel/perf_event.c index a6b00b3..ef90479 100644 --- a/arch/xtensa/kernel/perf_event.c +++ b/arch/xtensa/kernel/perf_event.c @@ -323,23 +323,23 @@ static void xtensa_pmu_read(struct perf_event *event) static int callchain_trace(struct stackframe *frame, void *data) { - struct perf_callchain_entry *entry = data; + struct perf_callchain_entry_ctx *entry = data; perf_callchain_store(entry, frame->pc); return 0; } -void perf_callchain_kernel(struct perf_callchain_entry *entry, +void perf_callchain_kernel(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) { - xtensa_backtrace_kernel(regs, sysctl_perf_event_max_stack, + xtensa_backtrace_kernel(regs, entry->max_stack, callchain_trace, NULL, entry); } -void perf_callchain_user(struct perf_callchain_entry *entry, +void perf_callchain_user(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) { - xtensa_backtrace_user(regs, sysctl_perf_event_max_stack, + xtensa_backtrace_user(regs, entry->max_stack, callchain_trace, entry); } diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 44f3383..1a827ce 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -61,6 +61,14 @@ struct perf_callchain_entry { __u64 ip[0]; /* /proc/sys/kernel/perf_event_max_stack */ }; +struct perf_callchain_entry_ctx { + struct perf_callchain_entry *entry; + u32 max_stack; + u32 nr; + short contexts; + bool contexts_maxed; +}; + struct perf_raw_record { u32 size; void *data; @@ -1061,20 +1069,36 @@ extern void perf_event_fork(struct task_struct *tsk); /* Callchains */ DECLARE_PER_CPU(struct perf_callchain_entry, perf_callchain_entry); -extern void perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs); -extern void perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs); +extern void perf_callchain_user(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs); +extern void perf_callchain_kernel(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs); extern struct perf_callchain_entry * get_perf_callchain(struct pt_regs *regs, u32 init_nr, bool kernel, bool user, - bool crosstask, bool add_mark); + u32 max_stack, bool crosstask, bool add_mark); extern int get_callchain_buffers(void); extern void put_callchain_buffers(void); extern int sysctl_perf_event_max_stack; +extern int sysctl_perf_event_max_contexts_per_stack; + +static inline int perf_callchain_store_context(struct perf_callchain_entry_ctx *ctx, u64 ip) +{ + if (ctx->contexts < sysctl_perf_event_max_contexts_per_stack) { + struct perf_callchain_entry *entry = ctx->entry; + entry->ip[entry->nr++] = ip; + ++ctx->contexts; + return 0; + } else { + ctx->contexts_maxed = true; + return -1; /* no more room, stop walking the stack */ + } +} -static inline int perf_callchain_store(struct perf_callchain_entry *entry, u64 ip) +static inline int perf_callchain_store(struct perf_callchain_entry_ctx *ctx, u64 ip) { - if (entry->nr < sysctl_perf_event_max_stack) { + if (ctx->nr < ctx->max_stack && !ctx->contexts_maxed) { + struct perf_callchain_entry *entry = ctx->entry; entry->ip[entry->nr++] = ip; + ++ctx->nr; return 0; } else { return -1; /* no more room, stop walking the stack */ diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h index 43fc8d2..36ce552 100644 --- a/include/uapi/linux/perf_event.h +++ b/include/uapi/linux/perf_event.h @@ -862,6 +862,7 @@ enum perf_event_type { }; #define PERF_MAX_STACK_DEPTH 127 +#define PERF_MAX_CONTEXTS_PER_STACK 8 enum perf_callchain_context { PERF_CONTEXT_HV = (__u64)-32, diff --git a/kernel/bpf/stackmap.c b/kernel/bpf/stackmap.c index c8ee352..080a2df 100644 --- a/kernel/bpf/stackmap.c +++ b/kernel/bpf/stackmap.c @@ -136,7 +136,8 @@ u64 bpf_get_stackid(u64 r1, u64 r2, u64 flags, u64 r4, u64 r5) BPF_F_FAST_STACK_CMP | BPF_F_REUSE_STACKID))) return -EINVAL; - trace = get_perf_callchain(regs, init_nr, kernel, user, false, false); + trace = get_perf_callchain(regs, init_nr, kernel, user, + sysctl_perf_event_max_stack, false, false); if (unlikely(!trace)) /* couldn't fetch the stack trace */ diff --git a/kernel/events/callchain.c b/kernel/events/callchain.c index b9325e7..179ef46 100644 --- a/kernel/events/callchain.c +++ b/kernel/events/callchain.c @@ -19,11 +19,13 @@ struct callchain_cpus_entries { }; int sysctl_perf_event_max_stack __read_mostly = PERF_MAX_STACK_DEPTH; +int sysctl_perf_event_max_contexts_per_stack __read_mostly = PERF_MAX_CONTEXTS_PER_STACK; static inline size_t perf_callchain_entry__sizeof(void) { return (sizeof(struct perf_callchain_entry) + - sizeof(__u64) * sysctl_perf_event_max_stack); + sizeof(__u64) * (sysctl_perf_event_max_stack + + sysctl_perf_event_max_contexts_per_stack)); } static DEFINE_PER_CPU(int, callchain_recursion[PERF_NR_CONTEXTS]); @@ -32,12 +34,12 @@ static DEFINE_MUTEX(callchain_mutex); static struct callchain_cpus_entries *callchain_cpus_entries; -__weak void perf_callchain_kernel(struct perf_callchain_entry *entry, +__weak void perf_callchain_kernel(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) { } -__weak void perf_callchain_user(struct perf_callchain_entry *entry, +__weak void perf_callchain_user(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) { } @@ -176,14 +178,15 @@ perf_callchain(struct perf_event *event, struct pt_regs *regs) if (!kernel && !user) return NULL; - return get_perf_callchain(regs, 0, kernel, user, crosstask, true); + return get_perf_callchain(regs, 0, kernel, user, sysctl_perf_event_max_stack, crosstask, true); } struct perf_callchain_entry * get_perf_callchain(struct pt_regs *regs, u32 init_nr, bool kernel, bool user, - bool crosstask, bool add_mark) + u32 max_stack, bool crosstask, bool add_mark) { struct perf_callchain_entry *entry; + struct perf_callchain_entry_ctx ctx; int rctx; entry = get_callchain_entry(&rctx); @@ -193,12 +196,16 @@ get_perf_callchain(struct pt_regs *regs, u32 init_nr, bool kernel, bool user, if (!entry) goto exit_put; - entry->nr = init_nr; + ctx.entry = entry; + ctx.max_stack = max_stack; + ctx.nr = entry->nr = init_nr; + ctx.contexts = 0; + ctx.contexts_maxed = false; if (kernel && !user_mode(regs)) { if (add_mark) - perf_callchain_store(entry, PERF_CONTEXT_KERNEL); - perf_callchain_kernel(entry, regs); + perf_callchain_store_context(&ctx, PERF_CONTEXT_KERNEL); + perf_callchain_kernel(&ctx, regs); } if (user) { @@ -214,8 +221,8 @@ get_perf_callchain(struct pt_regs *regs, u32 init_nr, bool kernel, bool user, goto exit_put; if (add_mark) - perf_callchain_store(entry, PERF_CONTEXT_USER); - perf_callchain_user(entry, regs); + perf_callchain_store_context(&ctx, PERF_CONTEXT_USER); + perf_callchain_user(&ctx, regs); } } @@ -225,10 +232,15 @@ exit_put: return entry; } +/* + * Used for sysctl_perf_event_max_stack and + * sysctl_perf_event_max_contexts_per_stack. + */ int perf_event_max_stack_handler(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { - int new_value = sysctl_perf_event_max_stack, ret; + int *value = table->data; + int new_value = *value, ret; struct ctl_table new_table = *table; new_table.data = &new_value; @@ -240,7 +252,7 @@ int perf_event_max_stack_handler(struct ctl_table *table, int write, if (atomic_read(&nr_callchain_events)) ret = -EBUSY; else - sysctl_perf_event_max_stack = new_value; + *value = new_value; mutex_unlock(&callchain_mutex); diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 2effd84..87b2fc38 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -1149,13 +1149,22 @@ static struct ctl_table kern_table[] = { }, { .procname = "perf_event_max_stack", - .data = NULL, /* filled in by handler */ + .data = &sysctl_perf_event_max_stack, .maxlen = sizeof(sysctl_perf_event_max_stack), .mode = 0644, .proc_handler = perf_event_max_stack_handler, .extra1 = &zero, .extra2 = &six_hundred_forty_kb, }, + { + .procname = "perf_event_max_contexts_per_stack", + .data = &sysctl_perf_event_max_contexts_per_stack, + .maxlen = sizeof(sysctl_perf_event_max_contexts_per_stack), + .mode = 0644, + .proc_handler = perf_event_max_stack_handler, + .extra1 = &zero, + .extra2 = &one_thousand, + }, #endif #ifdef CONFIG_KMEMCHECK { diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt index ebaf849..9cbddc2 100644 --- a/tools/perf/Documentation/perf-report.txt +++ b/tools/perf/Documentation/perf-report.txt @@ -103,12 +103,13 @@ OPTIONS If --branch-stack option is used, following sort keys are also available: - dso_from, dso_to, symbol_from, symbol_to, mispredict. - dso_from: name of library or module branched from - dso_to: name of library or module branched to - symbol_from: name of function branched from - symbol_to: name of function branched to + - srcline_from: source file and line branched from + - srcline_to: source file and line branched to - mispredict: "N" for predicted branch, "Y" for mispredicted branch - in_tx: branch in TSX transaction - abort: TSX transaction abort. @@ -248,7 +249,7 @@ OPTIONS Note that when using the --itrace option the synthesized callchain size will override this value if the synthesized callchain size is bigger. - Default: /proc/sys/kernel/perf_event_max_stack when present, 127 otherwise. + Default: 127 -G:: --inverted:: diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt index a856a10..4fc44c7 100644 --- a/tools/perf/Documentation/perf-script.txt +++ b/tools/perf/Documentation/perf-script.txt @@ -267,7 +267,7 @@ include::itrace.txt[] Note that when using the --itrace option the synthesized callchain size will override this value if the synthesized callchain size is bigger. - Default: /proc/sys/kernel/perf_event_max_stack when present, 127 otherwise. + Default: 127 --ns:: Use 9 decimal places when displaying time (i.e. show the nanoseconds) diff --git a/tools/perf/Documentation/perf-trace.txt b/tools/perf/Documentation/perf-trace.txt index 6afe201..1ab0782 100644 --- a/tools/perf/Documentation/perf-trace.txt +++ b/tools/perf/Documentation/perf-trace.txt @@ -143,7 +143,8 @@ the thread executes on the designated CPUs. Default is to monitor all CPUs. Implies '--call-graph dwarf' when --call-graph not present on the command line, on systems where DWARF unwinding was built in. - Default: /proc/sys/kernel/perf_event_max_stack when present, 127 otherwise. + Default: /proc/sys/kernel/perf_event_max_stack when present for + live sessions (without --input/-i), 127 otherwise. --min-stack:: Set the stack depth limit when parsing the callchain, anything diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c index 8141583..25c8173 100644 --- a/tools/perf/builtin-annotate.c +++ b/tools/perf/builtin-annotate.c @@ -324,8 +324,9 @@ int cmd_annotate(int argc, const char **argv, const char *prefix __maybe_unused) OPT_BOOLEAN(0, "skip-missing", &annotate.skip_missing, "Skip symbols that cannot be annotated"), OPT_STRING('C', "cpu", &annotate.cpu_list, "cpu", "list of cpus to profile"), - OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory", - "Look for files with symbols relative to this directory"), + OPT_CALLBACK(0, "symfs", NULL, "directory", + "Look for files with symbols relative to this directory", + symbol__config_symfs), OPT_BOOLEAN(0, "source", &symbol_conf.annotate_src, "Interleave source code with assembly code (default)"), OPT_BOOLEAN(0, "asm-raw", &symbol_conf.annotate_asm_raw, diff --git a/tools/perf/builtin-buildid-cache.c b/tools/perf/builtin-buildid-cache.c index 632efc6..d75bded 100644 --- a/tools/perf/builtin-buildid-cache.c +++ b/tools/perf/builtin-buildid-cache.c @@ -119,8 +119,8 @@ static int build_id_cache__add_kcore(const char *filename, bool force) if (build_id_cache__kcore_buildid(from_dir, sbuildid) < 0) return -1; - scnprintf(to_dir, sizeof(to_dir), "%s/[kernel.kcore]/%s", - buildid_dir, sbuildid); + scnprintf(to_dir, sizeof(to_dir), "%s/%s/%s", + buildid_dir, DSO__NAME_KCORE, sbuildid); if (!force && !build_id_cache__kcore_existing(from_dir, to_dir, sizeof(to_dir))) { @@ -131,8 +131,8 @@ static int build_id_cache__add_kcore(const char *filename, bool force) if (build_id_cache__kcore_dir(dir, sizeof(dir))) return -1; - scnprintf(to_dir, sizeof(to_dir), "%s/[kernel.kcore]/%s/%s", - buildid_dir, sbuildid, dir); + scnprintf(to_dir, sizeof(to_dir), "%s/%s/%s/%s", + buildid_dir, DSO__NAME_KCORE, sbuildid, dir); if (mkdir_p(to_dir, 0755)) return -1; diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c index 9ce354f..f7645a4 100644 --- a/tools/perf/builtin-diff.c +++ b/tools/perf/builtin-diff.c @@ -812,8 +812,9 @@ static const struct option options[] = { OPT_STRING_NOEMPTY('t', "field-separator", &symbol_conf.field_sep, "separator", "separator for columns, no spaces will be added between " "columns '.' is reserved."), - OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory", - "Look for files with symbols relative to this directory"), + OPT_CALLBACK(0, "symfs", NULL, "directory", + "Look for files with symbols relative to this directory", + symbol__config_symfs), OPT_UINTEGER('o', "order", &sort_compute, "Specify compute sorting."), OPT_CALLBACK(0, "percentage", NULL, "relative|absolute", "How to display percentage of filtered entries", parse_filter_percentage), diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index f3679c4..dc3fcb5 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -40,6 +40,7 @@ #include <unistd.h> #include <sched.h> #include <sys/mman.h> +#include <asm/bug.h> struct record { @@ -82,27 +83,87 @@ static int process_synthesized_event(struct perf_tool *tool, return record__write(rec, event, event->header.size); } +static int +backward_rb_find_range(void *buf, int mask, u64 head, u64 *start, u64 *end) +{ + struct perf_event_header *pheader; + u64 evt_head = head; + int size = mask + 1; + + pr_debug2("backward_rb_find_range: buf=%p, head=%"PRIx64"\n", buf, head); + pheader = (struct perf_event_header *)(buf + (head & mask)); + *start = head; + while (true) { + if (evt_head - head >= (unsigned int)size) { + pr_debug("Finshed reading backward ring buffer: rewind\n"); + if (evt_head - head > (unsigned int)size) + evt_head -= pheader->size; + *end = evt_head; + return 0; + } + + pheader = (struct perf_event_header *)(buf + (evt_head & mask)); + + if (pheader->size == 0) { + pr_debug("Finshed reading backward ring buffer: get start\n"); + *end = evt_head; + return 0; + } + + evt_head += pheader->size; + pr_debug3("move evt_head: %"PRIx64"\n", evt_head); + } + WARN_ONCE(1, "Shouldn't get here\n"); + return -1; +} + +static int +rb_find_range(struct perf_evlist *evlist, + void *data, int mask, u64 head, u64 old, + u64 *start, u64 *end) +{ + if (!evlist->backward) { + *start = old; + *end = head; + return 0; + } + + return backward_rb_find_range(data, mask, head, start, end); +} + static int record__mmap_read(struct record *rec, int idx) { struct perf_mmap *md = &rec->evlist->mmap[idx]; u64 head = perf_mmap__read_head(md); u64 old = md->prev; + u64 end = head, start = old; unsigned char *data = md->base + page_size; unsigned long size; void *buf; int rc = 0; - if (old == head) + if (rb_find_range(rec->evlist, data, md->mask, head, + old, &start, &end)) + return -1; + + if (start == end) return 0; rec->samples++; - size = head - old; + size = end - start; + if (size > (unsigned long)(md->mask) + 1) { + WARN_ONCE(1, "failed to keep up with mmap data. (warn only once)\n"); + + md->prev = head; + perf_evlist__mmap_consume(rec->evlist, idx); + return 0; + } - if ((old & md->mask) + size != (head & md->mask)) { - buf = &data[old & md->mask]; - size = md->mask + 1 - (old & md->mask); - old += size; + if ((start & md->mask) + size != (end & md->mask)) { + buf = &data[start & md->mask]; + size = md->mask + 1 - (start & md->mask); + start += size; if (record__write(rec, buf, size) < 0) { rc = -1; @@ -110,16 +171,16 @@ static int record__mmap_read(struct record *rec, int idx) } } - buf = &data[old & md->mask]; - size = head - old; - old += size; + buf = &data[start & md->mask]; + size = end - start; + start += size; if (record__write(rec, buf, size) < 0) { rc = -1; goto out; } - md->prev = old; + md->prev = head; perf_evlist__mmap_consume(rec->evlist, idx); out: return rc; diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 87d40e3..a87cb33 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -691,7 +691,7 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused) .ordered_events = true, .ordering_requires_timestamps = true, }, - .max_stack = sysctl_perf_event_max_stack, + .max_stack = PERF_MAX_STACK_DEPTH, .pretty_printing_style = "normal", .socket_filter = -1, }; @@ -770,8 +770,9 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused) "columns '.' is reserved."), OPT_BOOLEAN('U', "hide-unresolved", &symbol_conf.hide_unresolved, "Only display entries resolved to a symbol"), - OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory", - "Look for files with symbols relative to this directory"), + OPT_CALLBACK(0, "symfs", NULL, "directory", + "Look for files with symbols relative to this directory", + symbol__config_symfs), OPT_STRING('C', "cpu", &report.cpu_list, "cpu", "list of cpus to profile"), OPT_BOOLEAN('I', "show-info", &report.show_full_info, diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index efca816..e3ce2f3 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -2010,8 +2010,9 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused) "file", "kallsyms pathname"), OPT_BOOLEAN('G', "hide-call-graph", &no_callchain, "When printing symbols do not display call chain"), - OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory", - "Look for files with symbols relative to this directory"), + OPT_CALLBACK(0, "symfs", NULL, "directory", + "Look for files with symbols relative to this directory", + symbol__config_symfs), OPT_CALLBACK('F', "fields", NULL, "str", "comma separated output fields prepend with 'type:'. " "Valid types: hw,sw,trace,raw. " @@ -2067,8 +2068,6 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused) NULL }; - scripting_max_stack = sysctl_perf_event_max_stack; - setup_scripting(); argc = parse_options_subcommand(argc, argv, options, script_subcommands, script_usage, diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index e459b68..ee7ada7 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -66,6 +66,7 @@ #include <stdlib.h> #include <sys/prctl.h> #include <locale.h> +#include <math.h> #define DEFAULT_SEPARATOR " " #define CNTR_NOT_SUPPORTED "<not supported>" @@ -991,12 +992,12 @@ static void abs_printout(int id, int nr, struct perf_evsel *evsel, double avg) const char *fmt; if (csv_output) { - fmt = sc != 1.0 ? "%.2f%s" : "%.0f%s"; + fmt = floor(sc) != sc ? "%.2f%s" : "%.0f%s"; } else { if (big_num) - fmt = sc != 1.0 ? "%'18.2f%s" : "%'18.0f%s"; + fmt = floor(sc) != sc ? "%'18.2f%s" : "%'18.0f%s"; else - fmt = sc != 1.0 ? "%18.2f%s" : "%18.0f%s"; + fmt = floor(sc) != sc ? "%18.2f%s" : "%18.0f%s"; } aggr_printout(evsel, id, nr); @@ -1909,6 +1910,9 @@ static int add_default_attributes(void) } if (!evsel_list->nr_entries) { + if (target__has_cpu(&target)) + default_attrs0[0].config = PERF_COUNT_SW_CPU_CLOCK; + if (perf_evlist__add_default_attrs(evsel_list, default_attrs0) < 0) return -1; if (pmu_have_event("cpu", "stalled-cycles-frontend")) { @@ -2000,7 +2004,7 @@ static int process_stat_round_event(struct perf_tool *tool __maybe_unused, union perf_event *event, struct perf_session *session) { - struct stat_round_event *round = &event->stat_round; + struct stat_round_event *stat_round = &event->stat_round; struct perf_evsel *counter; struct timespec tsh, *ts = NULL; const char **argv = session->header.env.cmdline_argv; @@ -2009,12 +2013,12 @@ static int process_stat_round_event(struct perf_tool *tool __maybe_unused, evlist__for_each(evsel_list, counter) perf_stat_process_counter(&stat_config, counter); - if (round->type == PERF_STAT_ROUND_TYPE__FINAL) - update_stats(&walltime_nsecs_stats, round->time); + if (stat_round->type == PERF_STAT_ROUND_TYPE__FINAL) + update_stats(&walltime_nsecs_stats, stat_round->time); - if (stat_config.interval && round->time) { - tsh.tv_sec = round->time / NSECS_PER_SEC; - tsh.tv_nsec = round->time % NSECS_PER_SEC; + if (stat_config.interval && stat_round->time) { + tsh.tv_sec = stat_round->time / NSECS_PER_SEC; + tsh.tv_nsec = stat_round->time % NSECS_PER_SEC; ts = &tsh; } diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c index 40cc9bb..733a554 100644 --- a/tools/perf/builtin-timechart.c +++ b/tools/perf/builtin-timechart.c @@ -1945,8 +1945,9 @@ int cmd_timechart(int argc, const char **argv, OPT_CALLBACK('p', "process", NULL, "process", "process selector. Pass a pid or process name.", parse_process), - OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory", - "Look for files with symbols relative to this directory"), + OPT_CALLBACK(0, "symfs", NULL, "directory", + "Look for files with symbols relative to this directory", + symbol__config_symfs), OPT_INTEGER('n', "proc-num", &tchart.proc_num, "min. number of tasks to print"), OPT_BOOLEAN('t', "topology", &tchart.topology, diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 1793da5..2a6cc25 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -732,7 +732,7 @@ static void perf_event__process_sample(struct perf_tool *tool, if (machine__resolve(machine, &al, sample) < 0) return; - if (!top->kptr_restrict_warned && + if (!machine->kptr_restrict_warned && symbol_conf.kptr_restrict && al.cpumode == PERF_RECORD_MISC_KERNEL) { ui__warning( @@ -743,7 +743,7 @@ static void perf_event__process_sample(struct perf_tool *tool, " modules" : ""); if (use_browser <= 0) sleep(5); - top->kptr_restrict_warned = true; + machine->kptr_restrict_warned = true; } if (al.sym == NULL) { @@ -759,7 +759,7 @@ static void perf_event__process_sample(struct perf_tool *tool, * --hide-kernel-symbols, even if the user specifies an * invalid --vmlinux ;-) */ - if (!top->kptr_restrict_warned && !top->vmlinux_warned && + if (!machine->kptr_restrict_warned && !top->vmlinux_warned && al.map == machine->vmlinux_maps[MAP__FUNCTION] && RB_EMPTY_ROOT(&al.map->dso->symbols[MAP__FUNCTION])) { if (symbol_conf.vmlinux_name) { diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 6e5c325..5c50fe7 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -576,84 +576,54 @@ static struct syscall_fmt { bool hexret; } syscall_fmts[] = { { .name = "access", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ - [1] = SCA_ACCMODE, /* mode */ }, }, + .arg_scnprintf = { [1] = SCA_ACCMODE, /* mode */ }, }, { .name = "arch_prctl", .errmsg = true, .alias = "prctl", }, { .name = "bpf", .errmsg = true, STRARRAY(0, cmd, bpf_cmd), }, { .name = "brk", .hexret = true, .arg_scnprintf = { [0] = SCA_HEX, /* brk */ }, }, - { .name = "chdir", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, - { .name = "chmod", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, - { .name = "chroot", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, + { .name = "chdir", .errmsg = true, }, + { .name = "chmod", .errmsg = true, }, + { .name = "chroot", .errmsg = true, }, { .name = "clock_gettime", .errmsg = true, STRARRAY(0, clk_id, clockid), }, { .name = "clone", .errpid = true, }, { .name = "close", .errmsg = true, .arg_scnprintf = { [0] = SCA_CLOSE_FD, /* fd */ }, }, { .name = "connect", .errmsg = true, }, - { .name = "creat", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, - { .name = "dup", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, - { .name = "dup2", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, - { .name = "dup3", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + { .name = "creat", .errmsg = true, }, + { .name = "dup", .errmsg = true, }, + { .name = "dup2", .errmsg = true, }, + { .name = "dup3", .errmsg = true, }, { .name = "epoll_ctl", .errmsg = true, STRARRAY(1, op, epoll_ctl_ops), }, { .name = "eventfd2", .errmsg = true, .arg_scnprintf = { [1] = SCA_EFD_FLAGS, /* flags */ }, }, - { .name = "faccessat", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ - [1] = SCA_FILENAME, /* filename */ }, }, - { .name = "fadvise64", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, - { .name = "fallocate", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, - { .name = "fchdir", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, - { .name = "fchmod", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + { .name = "faccessat", .errmsg = true, }, + { .name = "fadvise64", .errmsg = true, }, + { .name = "fallocate", .errmsg = true, }, + { .name = "fchdir", .errmsg = true, }, + { .name = "fchmod", .errmsg = true, }, { .name = "fchmodat", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ - [1] = SCA_FILENAME, /* filename */ }, }, - { .name = "fchown", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, }, + { .name = "fchown", .errmsg = true, }, { .name = "fchownat", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ - [1] = SCA_FILENAME, /* filename */ }, }, + .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, }, { .name = "fcntl", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ - [1] = SCA_STRARRAY, /* cmd */ }, + .arg_scnprintf = { [1] = SCA_STRARRAY, /* cmd */ }, .arg_parm = { [1] = &strarray__fcntl_cmds, /* cmd */ }, }, - { .name = "fdatasync", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + { .name = "fdatasync", .errmsg = true, }, { .name = "flock", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ - [1] = SCA_FLOCK, /* cmd */ }, }, - { .name = "fsetxattr", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, - { .name = "fstat", .errmsg = true, .alias = "newfstat", - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, - { .name = "fstatat", .errmsg = true, .alias = "newfstatat", - .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ - [1] = SCA_FILENAME, /* filename */ }, }, - { .name = "fstatfs", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, - { .name = "fsync", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, - { .name = "ftruncate", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + .arg_scnprintf = { [1] = SCA_FLOCK, /* cmd */ }, }, + { .name = "fsetxattr", .errmsg = true, }, + { .name = "fstat", .errmsg = true, .alias = "newfstat", }, + { .name = "fstatat", .errmsg = true, .alias = "newfstatat", }, + { .name = "fstatfs", .errmsg = true, }, + { .name = "fsync", .errmsg = true, }, + { .name = "ftruncate", .errmsg = true, }, { .name = "futex", .errmsg = true, .arg_scnprintf = { [1] = SCA_FUTEX_OP, /* op */ }, }, { .name = "futimesat", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ - [1] = SCA_FILENAME, /* filename */ }, }, - { .name = "getdents", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, - { .name = "getdents64", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, }, + { .name = "getdents", .errmsg = true, }, + { .name = "getdents64", .errmsg = true, }, { .name = "getitimer", .errmsg = true, STRARRAY(0, which, itimers), }, { .name = "getpid", .errpid = true, }, { .name = "getpgid", .errpid = true, }, @@ -661,12 +631,10 @@ static struct syscall_fmt { { .name = "getrandom", .errmsg = true, .arg_scnprintf = { [2] = SCA_GETRANDOM_FLAGS, /* flags */ }, }, { .name = "getrlimit", .errmsg = true, STRARRAY(0, resource, rlimit_resources), }, - { .name = "getxattr", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, - { .name = "inotify_add_watch", .errmsg = true, - .arg_scnprintf = { [1] = SCA_FILENAME, /* pathname */ }, }, + { .name = "getxattr", .errmsg = true, }, + { .name = "inotify_add_watch", .errmsg = true, }, { .name = "ioctl", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ + .arg_scnprintf = { #if defined(__i386__) || defined(__x86_64__) /* * FIXME: Make this available to all arches. @@ -680,41 +648,28 @@ static struct syscall_fmt { { .name = "keyctl", .errmsg = true, STRARRAY(0, option, keyctl_options), }, { .name = "kill", .errmsg = true, .arg_scnprintf = { [1] = SCA_SIGNUM, /* sig */ }, }, - { .name = "lchown", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, - { .name = "lgetxattr", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, + { .name = "lchown", .errmsg = true, }, + { .name = "lgetxattr", .errmsg = true, }, { .name = "linkat", .errmsg = true, .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, }, - { .name = "listxattr", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, - { .name = "llistxattr", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, - { .name = "lremovexattr", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, + { .name = "listxattr", .errmsg = true, }, + { .name = "llistxattr", .errmsg = true, }, + { .name = "lremovexattr", .errmsg = true, }, { .name = "lseek", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ - [2] = SCA_STRARRAY, /* whence */ }, + .arg_scnprintf = { [2] = SCA_STRARRAY, /* whence */ }, .arg_parm = { [2] = &strarray__whences, /* whence */ }, }, - { .name = "lsetxattr", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, - { .name = "lstat", .errmsg = true, .alias = "newlstat", - .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, - { .name = "lsxattr", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, + { .name = "lsetxattr", .errmsg = true, }, + { .name = "lstat", .errmsg = true, .alias = "newlstat", }, + { .name = "lsxattr", .errmsg = true, }, { .name = "madvise", .errmsg = true, .arg_scnprintf = { [0] = SCA_HEX, /* start */ [2] = SCA_MADV_BHV, /* behavior */ }, }, - { .name = "mkdir", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, + { .name = "mkdir", .errmsg = true, }, { .name = "mkdirat", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ - [1] = SCA_FILENAME, /* pathname */ }, }, - { .name = "mknod", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, + .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, }, + { .name = "mknod", .errmsg = true, }, { .name = "mknodat", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ - [1] = SCA_FILENAME, /* filename */ }, }, + .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, }, { .name = "mlock", .errmsg = true, .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, }, { .name = "mlockall", .errmsg = true, @@ -722,8 +677,7 @@ static struct syscall_fmt { { .name = "mmap", .hexret = true, .arg_scnprintf = { [0] = SCA_HEX, /* addr */ [2] = SCA_MMAP_PROT, /* prot */ - [3] = SCA_MMAP_FLAGS, /* flags */ - [4] = SCA_FD, /* fd */ }, }, + [3] = SCA_MMAP_FLAGS, /* flags */ }, }, { .name = "mprotect", .errmsg = true, .arg_scnprintf = { [0] = SCA_HEX, /* start */ [2] = SCA_MMAP_PROT, /* prot */ }, }, @@ -740,17 +694,14 @@ static struct syscall_fmt { { .name = "name_to_handle_at", .errmsg = true, .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, }, { .name = "newfstatat", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ - [1] = SCA_FILENAME, /* filename */ }, }, + .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, }, { .name = "open", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ - [1] = SCA_OPEN_FLAGS, /* flags */ }, }, + .arg_scnprintf = { [1] = SCA_OPEN_FLAGS, /* flags */ }, }, { .name = "open_by_handle_at", .errmsg = true, .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ [2] = SCA_OPEN_FLAGS, /* flags */ }, }, { .name = "openat", .errmsg = true, .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ - [1] = SCA_FILENAME, /* filename */ [2] = SCA_OPEN_FLAGS, /* flags */ }, }, { .name = "perf_event_open", .errmsg = true, .arg_scnprintf = { [2] = SCA_INT, /* cpu */ @@ -760,39 +711,26 @@ static struct syscall_fmt { .arg_scnprintf = { [1] = SCA_PIPE_FLAGS, /* flags */ }, }, { .name = "poll", .errmsg = true, .timeout = true, }, { .name = "ppoll", .errmsg = true, .timeout = true, }, - { .name = "pread", .errmsg = true, .alias = "pread64", - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, - { .name = "preadv", .errmsg = true, .alias = "pread", - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + { .name = "pread", .errmsg = true, .alias = "pread64", }, + { .name = "preadv", .errmsg = true, .alias = "pread", }, { .name = "prlimit64", .errmsg = true, STRARRAY(1, resource, rlimit_resources), }, - { .name = "pwrite", .errmsg = true, .alias = "pwrite64", - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, - { .name = "pwritev", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, - { .name = "read", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, - { .name = "readlink", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FILENAME, /* path */ }, }, + { .name = "pwrite", .errmsg = true, .alias = "pwrite64", }, + { .name = "pwritev", .errmsg = true, }, + { .name = "read", .errmsg = true, }, + { .name = "readlink", .errmsg = true, }, { .name = "readlinkat", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ - [1] = SCA_FILENAME, /* pathname */ }, }, - { .name = "readv", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, }, + { .name = "readv", .errmsg = true, }, { .name = "recvfrom", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ - [3] = SCA_MSG_FLAGS, /* flags */ }, }, + .arg_scnprintf = { [3] = SCA_MSG_FLAGS, /* flags */ }, }, { .name = "recvmmsg", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ - [3] = SCA_MSG_FLAGS, /* flags */ }, }, + .arg_scnprintf = { [3] = SCA_MSG_FLAGS, /* flags */ }, }, { .name = "recvmsg", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ - [2] = SCA_MSG_FLAGS, /* flags */ }, }, - { .name = "removexattr", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, + .arg_scnprintf = { [2] = SCA_MSG_FLAGS, /* flags */ }, }, + { .name = "removexattr", .errmsg = true, }, { .name = "renameat", .errmsg = true, .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, }, - { .name = "rmdir", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, + { .name = "rmdir", .errmsg = true, }, { .name = "rt_sigaction", .errmsg = true, .arg_scnprintf = { [0] = SCA_SIGNUM, /* sig */ }, }, { .name = "rt_sigprocmask", .errmsg = true, STRARRAY(0, how, sighow), }, @@ -807,22 +745,17 @@ static struct syscall_fmt { [1] = SCA_SECCOMP_FLAGS, /* flags */ }, }, { .name = "select", .errmsg = true, .timeout = true, }, { .name = "sendmmsg", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ - [3] = SCA_MSG_FLAGS, /* flags */ }, }, + .arg_scnprintf = { [3] = SCA_MSG_FLAGS, /* flags */ }, }, { .name = "sendmsg", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ - [2] = SCA_MSG_FLAGS, /* flags */ }, }, + .arg_scnprintf = { [2] = SCA_MSG_FLAGS, /* flags */ }, }, { .name = "sendto", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ - [3] = SCA_MSG_FLAGS, /* flags */ }, }, + .arg_scnprintf = { [3] = SCA_MSG_FLAGS, /* flags */ }, }, { .name = "set_tid_address", .errpid = true, }, { .name = "setitimer", .errmsg = true, STRARRAY(0, which, itimers), }, { .name = "setpgid", .errmsg = true, }, { .name = "setrlimit", .errmsg = true, STRARRAY(0, resource, rlimit_resources), }, - { .name = "setxattr", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, - { .name = "shutdown", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + { .name = "setxattr", .errmsg = true, }, + { .name = "shutdown", .errmsg = true, }, { .name = "socket", .errmsg = true, .arg_scnprintf = { [0] = SCA_STRARRAY, /* family */ [1] = SCA_SK_TYPE, /* type */ }, @@ -831,10 +764,8 @@ static struct syscall_fmt { .arg_scnprintf = { [0] = SCA_STRARRAY, /* family */ [1] = SCA_SK_TYPE, /* type */ }, .arg_parm = { [0] = &strarray__socket_families, /* family */ }, }, - { .name = "stat", .errmsg = true, .alias = "newstat", - .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, - { .name = "statfs", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, + { .name = "stat", .errmsg = true, .alias = "newstat", }, + { .name = "statfs", .errmsg = true, }, { .name = "swapoff", .errmsg = true, .arg_scnprintf = { [0] = SCA_FILENAME, /* specialfile */ }, }, { .name = "swapon", .errmsg = true, @@ -845,29 +776,21 @@ static struct syscall_fmt { .arg_scnprintf = { [2] = SCA_SIGNUM, /* sig */ }, }, { .name = "tkill", .errmsg = true, .arg_scnprintf = { [1] = SCA_SIGNUM, /* sig */ }, }, - { .name = "truncate", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FILENAME, /* path */ }, }, + { .name = "truncate", .errmsg = true, }, { .name = "uname", .errmsg = true, .alias = "newuname", }, { .name = "unlinkat", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ - [1] = SCA_FILENAME, /* pathname */ }, }, - { .name = "utime", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, + .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, }, + { .name = "utime", .errmsg = true, }, { .name = "utimensat", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FDAT, /* dirfd */ - [1] = SCA_FILENAME, /* filename */ }, }, - { .name = "utimes", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, - { .name = "vmsplice", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FDAT, /* dirfd */ }, }, + { .name = "utimes", .errmsg = true, }, + { .name = "vmsplice", .errmsg = true, }, { .name = "wait4", .errpid = true, .arg_scnprintf = { [2] = SCA_WAITID_OPTIONS, /* options */ }, }, { .name = "waitid", .errpid = true, .arg_scnprintf = { [3] = SCA_WAITID_OPTIONS, /* options */ }, }, - { .name = "write", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, - { .name = "writev", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + { .name = "write", .errmsg = true, }, + { .name = "writev", .errmsg = true, }, }; static int syscall_fmt__cmp(const void *name, const void *fmtp) @@ -1160,6 +1083,24 @@ static int trace__tool_process(struct perf_tool *tool, return trace__process_event(trace, machine, event, sample); } +static char *trace__machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp) +{ + struct machine *machine = vmachine; + + if (machine->kptr_restrict_warned) + return NULL; + + if (symbol_conf.kptr_restrict) { + pr_warning("Kernel address maps (/proc/{kallsyms,modules}) are restricted.\n\n" + "Check /proc/sys/kernel/kptr_restrict.\n\n" + "Kernel samples will not be resolved.\n"); + machine->kptr_restrict_warned = true; + return NULL; + } + + return machine__resolve_kernel_addr(vmachine, addrp, modp); +} + static int trace__symbols_init(struct trace *trace, struct perf_evlist *evlist) { int err = symbol__init(NULL); @@ -1171,7 +1112,7 @@ static int trace__symbols_init(struct trace *trace, struct perf_evlist *evlist) if (trace->host == NULL) return -ENOMEM; - if (trace_event__register_resolver(trace->host, machine__resolve_kernel_addr) < 0) + if (trace_event__register_resolver(trace->host, trace__machine__resolve_kernel_addr) < 0) return -errno; err = __machine__synthesize_threads(trace->host, &trace->tool, &trace->opts.target, @@ -1186,7 +1127,7 @@ static int trace__symbols_init(struct trace *trace, struct perf_evlist *evlist) static int syscall__set_arg_fmts(struct syscall *sc) { struct format_field *field; - int idx = 0; + int idx = 0, len; sc->arg_scnprintf = calloc(sc->nr_args, sizeof(void *)); if (sc->arg_scnprintf == NULL) @@ -1198,12 +1139,31 @@ static int syscall__set_arg_fmts(struct syscall *sc) for (field = sc->args; field; field = field->next) { if (sc->fmt && sc->fmt->arg_scnprintf[idx]) sc->arg_scnprintf[idx] = sc->fmt->arg_scnprintf[idx]; + else if (strcmp(field->type, "const char *") == 0 && + (strcmp(field->name, "filename") == 0 || + strcmp(field->name, "path") == 0 || + strcmp(field->name, "pathname") == 0)) + sc->arg_scnprintf[idx] = SCA_FILENAME; else if (field->flags & FIELD_IS_POINTER) sc->arg_scnprintf[idx] = syscall_arg__scnprintf_hex; else if (strcmp(field->type, "pid_t") == 0) sc->arg_scnprintf[idx] = SCA_PID; else if (strcmp(field->type, "umode_t") == 0) sc->arg_scnprintf[idx] = SCA_MODE_T; + else if ((strcmp(field->type, "int") == 0 || + strcmp(field->type, "unsigned int") == 0 || + strcmp(field->type, "long") == 0) && + (len = strlen(field->name)) >= 2 && + strcmp(field->name + len - 2, "fd") == 0) { + /* + * /sys/kernel/tracing/events/syscalls/sys_enter* + * egrep 'field:.*fd;' .../format|sed -r 's/.*field:([a-z ]+) [a-z_]*fd.+/\1/g'|sort|uniq -c + * 65 int + * 23 unsigned int + * 7 unsigned long + */ + sc->arg_scnprintf[idx] = SCA_FD; + } ++idx; } @@ -1534,7 +1494,7 @@ static int trace__sys_enter(struct trace *trace, struct perf_evsel *evsel, if (sc->is_exit) { if (!(trace->duration_filter || trace->summary_only || trace->min_stack)) { trace__fprintf_entry_head(trace, thread, 1, sample->time, trace->output); - fprintf(trace->output, "%-70s\n", ttrace->entry_str); + fprintf(trace->output, "%-70s)\n", ttrace->entry_str); } } else { ttrace->entry_pending = true; @@ -2887,12 +2847,12 @@ int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused) mmap_pages_user_set = false; if (trace.max_stack == UINT_MAX) { - trace.max_stack = sysctl_perf_event_max_stack; + trace.max_stack = input_name ? PERF_MAX_STACK_DEPTH : sysctl_perf_event_max_stack; max_stack_user_set = false; } #ifdef HAVE_DWARF_UNWIND_SUPPORT - if ((trace.min_stack || max_stack_user_set) && !callchain_param.enabled) + if ((trace.min_stack || max_stack_user_set) && !callchain_param.enabled && trace.trace_syscalls) record_opts__parse_callchain(&trace.opts, &callchain_param, "dwarf", false); #endif diff --git a/tools/perf/perf.c b/tools/perf/perf.c index 7970008..15982ce 100644 --- a/tools/perf/perf.c +++ b/tools/perf/perf.c @@ -549,6 +549,9 @@ int main(int argc, const char **argv) if (sysctl__read_int("kernel/perf_event_max_stack", &value) == 0) sysctl_perf_event_max_stack = value; + if (sysctl__read_int("kernel/perf_event_max_contexts_per_stack", &value) == 0) + sysctl_perf_event_max_contexts_per_stack = value; + cmd = extract_argv0_path(argv[0]); if (!cmd) cmd = "perf-help"; diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c index 4db73d5..7e5a1e8 100644 --- a/tools/perf/util/annotate.c +++ b/tools/perf/util/annotate.c @@ -354,9 +354,6 @@ static struct ins_ops nop_ops = { .scnprintf = nop__scnprintf, }; -/* - * Must be sorted by name! - */ static struct ins instructions[] = { { .name = "add", .ops = &mov_ops, }, { .name = "addl", .ops = &mov_ops, }, @@ -372,8 +369,8 @@ static struct ins instructions[] = { { .name = "bgt", .ops = &jump_ops, }, { .name = "bhi", .ops = &jump_ops, }, { .name = "bl", .ops = &call_ops, }, - { .name = "blt", .ops = &jump_ops, }, { .name = "bls", .ops = &jump_ops, }, + { .name = "blt", .ops = &jump_ops, }, { .name = "blx", .ops = &call_ops, }, { .name = "bne", .ops = &jump_ops, }, #endif @@ -449,18 +446,39 @@ static struct ins instructions[] = { { .name = "xbeginq", .ops = &jump_ops, }, }; -static int ins__cmp(const void *name, const void *insp) +static int ins__key_cmp(const void *name, const void *insp) { const struct ins *ins = insp; return strcmp(name, ins->name); } +static int ins__cmp(const void *a, const void *b) +{ + const struct ins *ia = a; + const struct ins *ib = b; + + return strcmp(ia->name, ib->name); +} + +static void ins__sort(void) +{ + const int nmemb = ARRAY_SIZE(instructions); + + qsort(instructions, nmemb, sizeof(struct ins), ins__cmp); +} + static struct ins *ins__find(const char *name) { const int nmemb = ARRAY_SIZE(instructions); + static bool sorted; + + if (!sorted) { + ins__sort(); + sorted = true; + } - return bsearch(name, instructions, nmemb, sizeof(struct ins), ins__cmp); + return bsearch(name, instructions, nmemb, sizeof(struct ins), ins__key_cmp); } int symbol__annotate_init(struct map *map __maybe_unused, struct symbol *sym) @@ -1122,7 +1140,7 @@ int symbol__annotate(struct symbol *sym, struct map *map, size_t privsize) } else if (dso__is_kcore(dso)) { goto fallback; } else if (readlink(symfs_filename, command, sizeof(command)) < 0 || - strstr(command, "[kernel.kallsyms]") || + strstr(command, DSO__NAME_KALLSYMS) || access(symfs_filename, R_OK)) { free(filename); fallback: diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c index bff425e..67e5966 100644 --- a/tools/perf/util/build-id.c +++ b/tools/perf/util/build-id.c @@ -256,7 +256,7 @@ static int machine__write_buildid_table(struct machine *machine, int fd) size_t name_len; bool in_kernel = false; - if (!pos->hit) + if (!pos->hit && !dso__is_vdso(pos)) continue; if (dso__is_vdso(pos)) { diff --git a/tools/perf/util/db-export.c b/tools/perf/util/db-export.c index 8d96c80..c9a6dc1 100644 --- a/tools/perf/util/db-export.c +++ b/tools/perf/util/db-export.c @@ -298,8 +298,7 @@ static struct call_path *call_path_from_sample(struct db_export *dbe, */ callchain_param.order = ORDER_CALLER; err = thread__resolve_callchain(thread, &callchain_cursor, evsel, - sample, NULL, NULL, - sysctl_perf_event_max_stack); + sample, NULL, NULL, PERF_MAX_STACK_DEPTH); if (err) { callchain_param.order = saved_order; return NULL; diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c index 3357479..5d286f5 100644 --- a/tools/perf/util/dso.c +++ b/tools/perf/util/dso.c @@ -7,6 +7,7 @@ #include "auxtrace.h" #include "util.h" #include "debug.h" +#include "vdso.h" char dso__symtab_origin(const struct dso *dso) { @@ -62,9 +63,7 @@ int dso__read_binary_type_filename(const struct dso *dso, } break; case DSO_BINARY_TYPE__BUILD_ID_CACHE: - /* skip the locally configured cache if a symfs is given */ - if (symbol_conf.symfs[0] || - (dso__build_id_filename(dso, filename, size) == NULL)) + if (dso__build_id_filename(dso, filename, size) == NULL) ret = -1; break; @@ -1169,7 +1168,7 @@ bool __dsos__read_build_ids(struct list_head *head, bool with_hits) struct dso *pos; list_for_each_entry(pos, head, node) { - if (with_hits && !pos->hit) + if (with_hits && !pos->hit && !dso__is_vdso(pos)) continue; if (pos->has_build_id) { have_build_id = true; diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index c4bfe11..e82ba90 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -44,6 +44,7 @@ void perf_evlist__init(struct perf_evlist *evlist, struct cpu_map *cpus, perf_evlist__set_maps(evlist, cpus, threads); fdarray__init(&evlist->pollfd, 64); evlist->workload.pid = -1; + evlist->backward = false; } struct perf_evlist *perf_evlist__new(void) @@ -679,6 +680,33 @@ static struct perf_evsel *perf_evlist__event2evsel(struct perf_evlist *evlist, return NULL; } +static int perf_evlist__set_paused(struct perf_evlist *evlist, bool value) +{ + int i; + + for (i = 0; i < evlist->nr_mmaps; i++) { + int fd = evlist->mmap[i].fd; + int err; + + if (fd < 0) + continue; + err = ioctl(fd, PERF_EVENT_IOC_PAUSE_OUTPUT, value ? 1 : 0); + if (err) + return err; + } + return 0; +} + +int perf_evlist__pause(struct perf_evlist *evlist) +{ + return perf_evlist__set_paused(evlist, true); +} + +int perf_evlist__resume(struct perf_evlist *evlist) +{ + return perf_evlist__set_paused(evlist, false); +} + /* When check_messup is true, 'end' must points to a good entry */ static union perf_event * perf_mmap__read(struct perf_mmap *md, bool check_messup, u64 start, @@ -881,6 +909,7 @@ static void __perf_evlist__munmap(struct perf_evlist *evlist, int idx) if (evlist->mmap[idx].base != NULL) { munmap(evlist->mmap[idx].base, evlist->mmap_len); evlist->mmap[idx].base = NULL; + evlist->mmap[idx].fd = -1; atomic_set(&evlist->mmap[idx].refcnt, 0); } auxtrace_mmap__munmap(&evlist->mmap[idx].auxtrace_mmap); @@ -901,10 +930,14 @@ void perf_evlist__munmap(struct perf_evlist *evlist) static int perf_evlist__alloc_mmap(struct perf_evlist *evlist) { + int i; + evlist->nr_mmaps = cpu_map__nr(evlist->cpus); if (cpu_map__empty(evlist->cpus)) evlist->nr_mmaps = thread_map__nr(evlist->threads); evlist->mmap = zalloc(evlist->nr_mmaps * sizeof(struct perf_mmap)); + for (i = 0; i < evlist->nr_mmaps; i++) + evlist->mmap[i].fd = -1; return evlist->mmap != NULL ? 0 : -ENOMEM; } @@ -941,6 +974,7 @@ static int __perf_evlist__mmap(struct perf_evlist *evlist, int idx, evlist->mmap[idx].base = NULL; return -1; } + evlist->mmap[idx].fd = fd; if (auxtrace_mmap__mmap(&evlist->mmap[idx].auxtrace_mmap, &mp->auxtrace_mp, evlist->mmap[idx].base, fd)) diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h index 85d1b598..d740fb8 100644 --- a/tools/perf/util/evlist.h +++ b/tools/perf/util/evlist.h @@ -28,6 +28,7 @@ struct record_opts; struct perf_mmap { void *base; int mask; + int fd; atomic_t refcnt; u64 prev; struct auxtrace_mmap auxtrace_mmap; @@ -43,6 +44,7 @@ struct perf_evlist { bool overwrite; bool enabled; bool has_user_cpus; + bool backward; size_t mmap_len; int id_pos; int is_pos; @@ -135,6 +137,8 @@ void perf_evlist__mmap_read_catchup(struct perf_evlist *evlist, int idx); void perf_evlist__mmap_consume(struct perf_evlist *evlist, int idx); +int perf_evlist__pause(struct perf_evlist *evlist); +int perf_evlist__resume(struct perf_evlist *evlist); int perf_evlist__open(struct perf_evlist *evlist); void perf_evlist__close(struct perf_evlist *evlist); diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 52c7d88..5d7037e 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -37,6 +37,7 @@ static struct { bool clockid; bool clockid_wrong; bool lbr_flags; + bool write_backward; } perf_missing_features; static clockid_t clockid; @@ -1376,6 +1377,8 @@ fallback_missing_features: if (perf_missing_features.lbr_flags) evsel->attr.branch_sample_type &= ~(PERF_SAMPLE_BRANCH_NO_FLAGS | PERF_SAMPLE_BRANCH_NO_CYCLES); + if (perf_missing_features.write_backward) + evsel->attr.write_backward = false; retry_sample_id: if (perf_missing_features.sample_id_all) evsel->attr.sample_id_all = 0; @@ -1438,6 +1441,12 @@ retry_open: err = -EINVAL; goto out_close; } + + if (evsel->overwrite && + perf_missing_features.write_backward) { + err = -EINVAL; + goto out_close; + } } } @@ -1500,6 +1509,10 @@ try_fallback: PERF_SAMPLE_BRANCH_NO_FLAGS))) { perf_missing_features.lbr_flags = true; goto fallback_missing_features; + } else if (!perf_missing_features.write_backward && + evsel->attr.write_backward) { + perf_missing_features.write_backward = true; + goto fallback_missing_features; } out_close: diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index 8a644fe..c1f1015 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -112,6 +112,7 @@ struct perf_evsel { bool tracking; bool per_pkg; bool precise_max; + bool overwrite; /* parse modifier helper */ int exclude_GH; int nr_members; diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c index cfab531..d1f19e0 100644 --- a/tools/perf/util/hist.c +++ b/tools/perf/util/hist.c @@ -117,6 +117,13 @@ void hists__calc_col_len(struct hists *hists, struct hist_entry *h) hists__new_col_len(hists, HISTC_SYMBOL_TO, symlen); hists__set_unres_dso_col_len(hists, HISTC_DSO_TO); } + + if (h->branch_info->srcline_from) + hists__new_col_len(hists, HISTC_SRCLINE_FROM, + strlen(h->branch_info->srcline_from)); + if (h->branch_info->srcline_to) + hists__new_col_len(hists, HISTC_SRCLINE_TO, + strlen(h->branch_info->srcline_to)); } if (h->mem_info) { @@ -1042,6 +1049,8 @@ void hist_entry__delete(struct hist_entry *he) if (he->branch_info) { map__zput(he->branch_info->from.map); map__zput(he->branch_info->to.map); + free_srcline(he->branch_info->srcline_from); + free_srcline(he->branch_info->srcline_to); zfree(&he->branch_info); } diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h index 0f84bfb..7b54ccf 100644 --- a/tools/perf/util/hist.h +++ b/tools/perf/util/hist.h @@ -52,6 +52,8 @@ enum hist_column { HISTC_MEM_IADDR_SYMBOL, HISTC_TRANSACTION, HISTC_CYCLES, + HISTC_SRCLINE_FROM, + HISTC_SRCLINE_TO, HISTC_TRACE, HISTC_NR_COLS, /* Last entry */ }; diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c index f9644f7..b177218 100644 --- a/tools/perf/util/machine.c +++ b/tools/perf/util/machine.c @@ -43,6 +43,7 @@ int machine__init(struct machine *machine, const char *root_dir, pid_t pid) machine->symbol_filter = NULL; machine->id_hdr_size = 0; + machine->kptr_restrict_warned = false; machine->comm_exec = false; machine->kernel_start = 0; @@ -709,7 +710,7 @@ static struct dso *machine__get_kernel(struct machine *machine) if (machine__is_host(machine)) { vmlinux_name = symbol_conf.vmlinux_name; if (!vmlinux_name) - vmlinux_name = "[kernel.kallsyms]"; + vmlinux_name = DSO__NAME_KALLSYMS; kernel = machine__findnew_kernel(machine, vmlinux_name, "[kernel]", DSO_TYPE_KERNEL); @@ -1135,10 +1136,10 @@ int machine__create_kernel_maps(struct machine *machine) { struct dso *kernel = machine__get_kernel(machine); const char *name; - u64 addr = machine__get_running_kernel_start(machine, &name); + u64 addr; int ret; - if (!addr || kernel == NULL) + if (kernel == NULL) return -1; ret = __machine__create_kernel_maps(machine, kernel); @@ -1160,8 +1161,9 @@ int machine__create_kernel_maps(struct machine *machine) */ map_groups__fixup_end(&machine->kmaps); - if (maps__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps, name, - addr)) { + addr = machine__get_running_kernel_start(machine, &name); + if (!addr) { + } else if (maps__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps, name, addr)) { machine__destroy_kernel_maps(machine); return -1; } @@ -1769,11 +1771,6 @@ static int resolve_lbr_callchain_sample(struct thread *thread, */ int mix_chain_nr = i + 1 + lbr_nr + 1; - if (mix_chain_nr > (int)sysctl_perf_event_max_stack + PERF_MAX_BRANCH_DEPTH) { - pr_warning("corrupted callchain. skipping...\n"); - return 0; - } - for (j = 0; j < mix_chain_nr; j++) { if (callchain_param.order == ORDER_CALLEE) { if (j < i + 1) @@ -1811,9 +1808,9 @@ static int thread__resolve_callchain_sample(struct thread *thread, { struct branch_stack *branch = sample->branch_stack; struct ip_callchain *chain = sample->callchain; - int chain_nr = min(max_stack, (int)chain->nr); + int chain_nr = chain->nr; u8 cpumode = PERF_RECORD_MISC_USER; - int i, j, err; + int i, j, err, nr_entries; int skip_idx = -1; int first_call = 0; @@ -1828,8 +1825,7 @@ static int thread__resolve_callchain_sample(struct thread *thread, * Based on DWARF debug information, some architectures skip * a callchain entry saved by the kernel. */ - if (chain->nr < sysctl_perf_event_max_stack) - skip_idx = arch_skip_callchain_idx(thread, chain); + skip_idx = arch_skip_callchain_idx(thread, chain); /* * Add branches to call stack for easier browsing. This gives @@ -1889,12 +1885,8 @@ static int thread__resolve_callchain_sample(struct thread *thread, } check_calls: - if (chain->nr > sysctl_perf_event_max_stack && (int)chain->nr > max_stack) { - pr_warning("corrupted callchain. skipping...\n"); - return 0; - } - - for (i = first_call; i < chain_nr; i++) { + for (i = first_call, nr_entries = 0; + i < chain_nr && nr_entries < max_stack; i++) { u64 ip; if (callchain_param.order == ORDER_CALLEE) @@ -1908,6 +1900,9 @@ check_calls: #endif ip = chain->ips[j]; + if (ip < PERF_CONTEXT_MAX) + ++nr_entries; + err = add_callchain_ip(thread, cursor, parent, root_al, &cpumode, ip); if (err) diff --git a/tools/perf/util/machine.h b/tools/perf/util/machine.h index 83f4679..41ac9cf 100644 --- a/tools/perf/util/machine.h +++ b/tools/perf/util/machine.h @@ -28,6 +28,7 @@ struct machine { pid_t pid; u16 id_hdr_size; bool comm_exec; + bool kptr_restrict_warned; char *root_dir; struct rb_root threads; pthread_rwlock_t threads_lock; diff --git a/tools/perf/util/scripting-engines/trace-event-perl.c b/tools/perf/util/scripting-engines/trace-event-perl.c index 62c7f69..5d1eb1c 100644 --- a/tools/perf/util/scripting-engines/trace-event-perl.c +++ b/tools/perf/util/scripting-engines/trace-event-perl.c @@ -264,8 +264,7 @@ static SV *perl_process_callchain(struct perf_sample *sample, goto exit; if (thread__resolve_callchain(al->thread, &callchain_cursor, evsel, - sample, NULL, NULL, - sysctl_perf_event_max_stack) != 0) { + sample, NULL, NULL, scripting_max_stack) != 0) { pr_err("Failed to resolve callchain. Skipping\n"); goto exit; } diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c index 20e69ed..c4e9bd7 100644 --- a/tools/perf/util/sort.c +++ b/tools/perf/util/sort.c @@ -353,6 +353,88 @@ struct sort_entry sort_srcline = { .se_width_idx = HISTC_SRCLINE, }; +/* --sort srcline_from */ + +static int64_t +sort__srcline_from_cmp(struct hist_entry *left, struct hist_entry *right) +{ + if (!left->branch_info->srcline_from) { + struct map *map = left->branch_info->from.map; + if (!map) + left->branch_info->srcline_from = SRCLINE_UNKNOWN; + else + left->branch_info->srcline_from = get_srcline(map->dso, + map__rip_2objdump(map, + left->branch_info->from.al_addr), + left->branch_info->from.sym, true); + } + if (!right->branch_info->srcline_from) { + struct map *map = right->branch_info->from.map; + if (!map) + right->branch_info->srcline_from = SRCLINE_UNKNOWN; + else + right->branch_info->srcline_from = get_srcline(map->dso, + map__rip_2objdump(map, + right->branch_info->from.al_addr), + right->branch_info->from.sym, true); + } + return strcmp(right->branch_info->srcline_from, left->branch_info->srcline_from); +} + +static int hist_entry__srcline_from_snprintf(struct hist_entry *he, char *bf, + size_t size, unsigned int width) +{ + return repsep_snprintf(bf, size, "%-*.*s", width, width, he->branch_info->srcline_from); +} + +struct sort_entry sort_srcline_from = { + .se_header = "From Source:Line", + .se_cmp = sort__srcline_from_cmp, + .se_snprintf = hist_entry__srcline_from_snprintf, + .se_width_idx = HISTC_SRCLINE_FROM, +}; + +/* --sort srcline_to */ + +static int64_t +sort__srcline_to_cmp(struct hist_entry *left, struct hist_entry *right) +{ + if (!left->branch_info->srcline_to) { + struct map *map = left->branch_info->to.map; + if (!map) + left->branch_info->srcline_to = SRCLINE_UNKNOWN; + else + left->branch_info->srcline_to = get_srcline(map->dso, + map__rip_2objdump(map, + left->branch_info->to.al_addr), + left->branch_info->from.sym, true); + } + if (!right->branch_info->srcline_to) { + struct map *map = right->branch_info->to.map; + if (!map) + right->branch_info->srcline_to = SRCLINE_UNKNOWN; + else + right->branch_info->srcline_to = get_srcline(map->dso, + map__rip_2objdump(map, + right->branch_info->to.al_addr), + right->branch_info->to.sym, true); + } + return strcmp(right->branch_info->srcline_to, left->branch_info->srcline_to); +} + +static int hist_entry__srcline_to_snprintf(struct hist_entry *he, char *bf, + size_t size, unsigned int width) +{ + return repsep_snprintf(bf, size, "%-*.*s", width, width, he->branch_info->srcline_to); +} + +struct sort_entry sort_srcline_to = { + .se_header = "To Source:Line", + .se_cmp = sort__srcline_to_cmp, + .se_snprintf = hist_entry__srcline_to_snprintf, + .se_width_idx = HISTC_SRCLINE_TO, +}; + /* --sort srcfile */ static char no_srcfile[1]; @@ -1347,6 +1429,8 @@ static struct sort_dimension bstack_sort_dimensions[] = { DIM(SORT_IN_TX, "in_tx", sort_in_tx), DIM(SORT_ABORT, "abort", sort_abort), DIM(SORT_CYCLES, "cycles", sort_cycles), + DIM(SORT_SRCLINE_FROM, "srcline_from", sort_srcline_from), + DIM(SORT_SRCLINE_TO, "srcline_to", sort_srcline_to), }; #undef DIM diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h index 42927f4..ebb59ca 100644 --- a/tools/perf/util/sort.h +++ b/tools/perf/util/sort.h @@ -215,6 +215,8 @@ enum sort_type { SORT_ABORT, SORT_IN_TX, SORT_CYCLES, + SORT_SRCLINE_FROM, + SORT_SRCLINE_TO, /* memory mode specific sort keys */ __SORT_MEMORY_MODE, diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c index fdb7196..aa9efe0 100644 --- a/tools/perf/util/stat-shadow.c +++ b/tools/perf/util/stat-shadow.c @@ -94,7 +94,8 @@ void perf_stat__update_shadow_stats(struct perf_evsel *counter, u64 *count, { int ctx = evsel_context(counter); - if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK)) + if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK) || + perf_evsel__match(counter, SOFTWARE, SW_CPU_CLOCK)) update_stats(&runtime_nsecs_stats[cpu], count[0]); else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES)) update_stats(&runtime_cycles_stats[ctx][cpu], count[0]); @@ -188,7 +189,7 @@ static void print_stalled_cycles_backend(int cpu, color = get_ratio_color(GRC_STALLED_CYCLES_BE, ratio); - out->print_metric(out->ctx, color, "%6.2f%%", "backend cycles idle", ratio); + out->print_metric(out->ctx, color, "%7.2f%%", "backend cycles idle", ratio); } static void print_branch_misses(int cpu, @@ -444,7 +445,8 @@ void perf_stat__print_shadow_stats(struct perf_evsel *evsel, ratio = total / avg; print_metric(ctxp, NULL, "%8.0f", "cycles / elision", ratio); - } else if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK)) { + } else if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK) || + perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK)) { if ((ratio = avg_stats(&walltime_nsecs_stats)) != 0) print_metric(ctxp, NULL, "%8.3f", "CPUs utilized", avg / ratio); diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index 7fb3330..20f9cb3 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -1662,8 +1662,8 @@ static char *dso__find_kallsyms(struct dso *dso, struct map *map) build_id__sprintf(dso->build_id, sizeof(dso->build_id), sbuild_id); - scnprintf(path, sizeof(path), "%s/[kernel.kcore]/%s", buildid_dir, - sbuild_id); + scnprintf(path, sizeof(path), "%s/%s/%s", buildid_dir, + DSO__NAME_KCORE, sbuild_id); /* Use /proc/kallsyms if possible */ if (is_host) { @@ -1699,8 +1699,8 @@ static char *dso__find_kallsyms(struct dso *dso, struct map *map) if (!find_matching_kcore(map, path, sizeof(path))) return strdup(path); - scnprintf(path, sizeof(path), "%s/[kernel.kallsyms]/%s", - buildid_dir, sbuild_id); + scnprintf(path, sizeof(path), "%s/%s/%s", + buildid_dir, DSO__NAME_KALLSYMS, sbuild_id); if (access(path, F_OK)) { pr_err("No kallsyms or vmlinux with build-id %s was found\n", @@ -1769,7 +1769,7 @@ do_kallsyms: if (err > 0 && !dso__is_kcore(dso)) { dso->binary_type = DSO_BINARY_TYPE__KALLSYMS; - dso__set_long_name(dso, "[kernel.kallsyms]", false); + dso__set_long_name(dso, DSO__NAME_KALLSYMS, false); map__fixup_start(map); map__fixup_end(map); } @@ -2033,3 +2033,26 @@ void symbol__exit(void) symbol_conf.sym_list = symbol_conf.dso_list = symbol_conf.comm_list = NULL; symbol_conf.initialized = false; } + +int symbol__config_symfs(const struct option *opt __maybe_unused, + const char *dir, int unset __maybe_unused) +{ + char *bf = NULL; + int ret; + + symbol_conf.symfs = strdup(dir); + if (symbol_conf.symfs == NULL) + return -ENOMEM; + + /* skip the locally configured cache if a symfs is given, and + * config buildid dir to symfs/.debug + */ + ret = asprintf(&bf, "%s/%s", dir, ".debug"); + if (ret < 0) + return -ENOMEM; + + set_buildid_dir(bf); + + free(bf); + return 0; +} diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h index 2b5e4ed..b10d558 100644 --- a/tools/perf/util/symbol.h +++ b/tools/perf/util/symbol.h @@ -44,6 +44,9 @@ Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep, #define DMGL_ANSI (1 << 1) /* Include const, volatile, etc */ #endif +#define DSO__NAME_KALLSYMS "[kernel.kallsyms]" +#define DSO__NAME_KCORE "[kernel.kcore]" + /** struct symbol - symtab entry * * @ignore - resolvable but tools ignore it (e.g. idle routines) @@ -183,6 +186,8 @@ struct branch_info { struct addr_map_symbol from; struct addr_map_symbol to; struct branch_flags flags; + char *srcline_from; + char *srcline_to; }; struct mem_info { @@ -287,6 +292,8 @@ bool symbol_type__is_a(char symbol_type, enum map_type map_type); bool symbol__restricted_filename(const char *filename, const char *restricted_filename); bool symbol__is_idle(struct symbol *sym); +int symbol__config_symfs(const struct option *opt __maybe_unused, + const char *dir, int unset __maybe_unused); int dso__load_sym(struct dso *dso, struct map *map, struct symsrc *syms_ss, struct symsrc *runtime_ss, symbol_filter_t filter, diff --git a/tools/perf/util/top.h b/tools/perf/util/top.h index f92c37a..b2940c8 100644 --- a/tools/perf/util/top.h +++ b/tools/perf/util/top.h @@ -27,7 +27,6 @@ struct perf_top { int max_stack; bool hide_kernel_symbols, hide_user_symbols, zero; bool use_tui, use_stdio; - bool kptr_restrict_warned; bool vmlinux_warned; bool dump_symtab; struct hist_entry *sym_filter_entry; diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c index eab077a..23504ad 100644 --- a/tools/perf/util/util.c +++ b/tools/perf/util/util.c @@ -33,7 +33,8 @@ struct callchain_param callchain_param = { unsigned int page_size; int cacheline_size; -unsigned int sysctl_perf_event_max_stack = PERF_MAX_STACK_DEPTH; +int sysctl_perf_event_max_stack = PERF_MAX_STACK_DEPTH; +int sysctl_perf_event_max_contexts_per_stack = PERF_MAX_CONTEXTS_PER_STACK; bool test_attr__enabled; diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h index 7651633..1e8c316 100644 --- a/tools/perf/util/util.h +++ b/tools/perf/util/util.h @@ -261,7 +261,8 @@ void sighandler_dump_stack(int sig); extern unsigned int page_size; extern int cacheline_size; -extern unsigned int sysctl_perf_event_max_stack; +extern int sysctl_perf_event_max_stack; +extern int sysctl_perf_event_max_contexts_per_stack; struct parse_tag { char tag; |
