diff options
26 files changed, 371 insertions, 77 deletions
diff --git a/arch/arm/kernel/perf_regs.c b/arch/arm/kernel/perf_regs.c index 6e4379c67cbc..592dda3f21ff 100644 --- a/arch/arm/kernel/perf_regs.c +++ b/arch/arm/kernel/perf_regs.c @@ -28,3 +28,11 @@ u64 perf_reg_abi(struct task_struct *task) { return PERF_SAMPLE_REGS_ABI_32; } + +void perf_get_regs_user(struct perf_regs *regs_user, + struct pt_regs *regs, + struct pt_regs *regs_user_copy) +{ + regs_user->regs = task_pt_regs(current); + regs_user->abi = perf_reg_abi(current); +} diff --git a/arch/arm64/kernel/perf_regs.c b/arch/arm64/kernel/perf_regs.c index 6762ad705587..3f62b35fb6f1 100644 --- a/arch/arm64/kernel/perf_regs.c +++ b/arch/arm64/kernel/perf_regs.c @@ -50,3 +50,11 @@ u64 perf_reg_abi(struct task_struct *task) else return PERF_SAMPLE_REGS_ABI_64; } + +void perf_get_regs_user(struct perf_regs *regs_user, + struct pt_regs *regs, + struct pt_regs *regs_user_copy) +{ + regs_user->regs = task_pt_regs(current); + regs_user->abi = perf_reg_abi(current); +} diff --git a/arch/x86/kernel/cpu/perf_event_intel_uncore.h b/arch/x86/kernel/cpu/perf_event_intel_uncore.h index 18eb78bbdd10..863d9b02563e 100644 --- a/arch/x86/kernel/cpu/perf_event_intel_uncore.h +++ b/arch/x86/kernel/cpu/perf_event_intel_uncore.h @@ -17,7 +17,7 @@ #define UNCORE_PCI_DEV_TYPE(data) ((data >> 8) & 0xff) #define UNCORE_PCI_DEV_IDX(data) (data & 0xff) #define UNCORE_EXTRA_PCI_DEV 0xff -#define UNCORE_EXTRA_PCI_DEV_MAX 2 +#define UNCORE_EXTRA_PCI_DEV_MAX 3 /* support up to 8 sockets */ #define UNCORE_SOCKET_MAX 8 diff --git a/arch/x86/kernel/cpu/perf_event_intel_uncore_snbep.c b/arch/x86/kernel/cpu/perf_event_intel_uncore_snbep.c index 745b158e9a65..21af6149edf2 100644 --- a/arch/x86/kernel/cpu/perf_event_intel_uncore_snbep.c +++ b/arch/x86/kernel/cpu/perf_event_intel_uncore_snbep.c @@ -891,6 +891,7 @@ void snbep_uncore_cpu_init(void) enum { SNBEP_PCI_QPI_PORT0_FILTER, SNBEP_PCI_QPI_PORT1_FILTER, + HSWEP_PCI_PCU_3, }; static int snbep_qpi_hw_config(struct intel_uncore_box *box, struct perf_event *event) @@ -2026,6 +2027,17 @@ void hswep_uncore_cpu_init(void) { if (hswep_uncore_cbox.num_boxes > boot_cpu_data.x86_max_cores) hswep_uncore_cbox.num_boxes = boot_cpu_data.x86_max_cores; + + /* Detect 6-8 core systems with only two SBOXes */ + if (uncore_extra_pci_dev[0][HSWEP_PCI_PCU_3]) { + u32 capid4; + + pci_read_config_dword(uncore_extra_pci_dev[0][HSWEP_PCI_PCU_3], + 0x94, &capid4); + if (((capid4 >> 6) & 0x3) == 0) + hswep_uncore_sbox.num_boxes = 2; + } + uncore_msr_uncores = hswep_msr_uncores; } @@ -2287,6 +2299,11 @@ static DEFINE_PCI_DEVICE_TABLE(hswep_uncore_pci_ids) = { .driver_data = UNCORE_PCI_DEV_DATA(UNCORE_EXTRA_PCI_DEV, SNBEP_PCI_QPI_PORT1_FILTER), }, + { /* PCU.3 (for Capability registers) */ + PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2fc0), + .driver_data = UNCORE_PCI_DEV_DATA(UNCORE_EXTRA_PCI_DEV, + HSWEP_PCI_PCU_3), + }, { /* end: all zeroes */ } }; diff --git a/arch/x86/kernel/perf_regs.c b/arch/x86/kernel/perf_regs.c index e309cc5c276e..781861cc5ee8 100644 --- a/arch/x86/kernel/perf_regs.c +++ b/arch/x86/kernel/perf_regs.c @@ -78,6 +78,14 @@ u64 perf_reg_abi(struct task_struct *task) { return PERF_SAMPLE_REGS_ABI_32; } + +void perf_get_regs_user(struct perf_regs *regs_user, + struct pt_regs *regs, + struct pt_regs *regs_user_copy) +{ + regs_user->regs = task_pt_regs(current); + regs_user->abi = perf_reg_abi(current); +} #else /* CONFIG_X86_64 */ #define REG_NOSUPPORT ((1ULL << PERF_REG_X86_DS) | \ (1ULL << PERF_REG_X86_ES) | \ @@ -102,4 +110,86 @@ u64 perf_reg_abi(struct task_struct *task) else return PERF_SAMPLE_REGS_ABI_64; } + +void perf_get_regs_user(struct perf_regs *regs_user, + struct pt_regs *regs, + struct pt_regs *regs_user_copy) +{ + struct pt_regs *user_regs = task_pt_regs(current); + + /* + * If we're in an NMI that interrupted task_pt_regs setup, then + * we can't sample user regs at all. This check isn't really + * sufficient, though, as we could be in an NMI inside an interrupt + * that happened during task_pt_regs setup. + */ + if (regs->sp > (unsigned long)&user_regs->r11 && + regs->sp <= (unsigned long)(user_regs + 1)) { + regs_user->abi = PERF_SAMPLE_REGS_ABI_NONE; + regs_user->regs = NULL; + return; + } + + /* + * RIP, flags, and the argument registers are usually saved. + * orig_ax is probably okay, too. + */ + regs_user_copy->ip = user_regs->ip; + regs_user_copy->cx = user_regs->cx; + regs_user_copy->dx = user_regs->dx; + regs_user_copy->si = user_regs->si; + regs_user_copy->di = user_regs->di; + regs_user_copy->r8 = user_regs->r8; + regs_user_copy->r9 = user_regs->r9; + regs_user_copy->r10 = user_regs->r10; + regs_user_copy->r11 = user_regs->r11; + regs_user_copy->orig_ax = user_regs->orig_ax; + regs_user_copy->flags = user_regs->flags; + + /* + * Don't even try to report the "rest" regs. + */ + regs_user_copy->bx = -1; + regs_user_copy->bp = -1; + regs_user_copy->r12 = -1; + regs_user_copy->r13 = -1; + regs_user_copy->r14 = -1; + regs_user_copy->r15 = -1; + + /* + * For this to be at all useful, we need a reasonable guess for + * sp and the ABI. Be careful: we're in NMI context, and we're + * considering current to be the current task, so we should + * be careful not to look at any other percpu variables that might + * change during context switches. + */ + if (IS_ENABLED(CONFIG_IA32_EMULATION) && + task_thread_info(current)->status & TS_COMPAT) { + /* Easy case: we're in a compat syscall. */ + regs_user->abi = PERF_SAMPLE_REGS_ABI_32; + regs_user_copy->sp = user_regs->sp; + regs_user_copy->cs = user_regs->cs; + regs_user_copy->ss = user_regs->ss; + } else if (user_regs->orig_ax != -1) { + /* + * We're probably in a 64-bit syscall. + * Warning: this code is severely racy. At least it's better + * than just blindly copying user_regs. + */ + regs_user->abi = PERF_SAMPLE_REGS_ABI_64; + regs_user_copy->sp = this_cpu_read(old_rsp); + regs_user_copy->cs = __USER_CS; + regs_user_copy->ss = __USER_DS; + regs_user_copy->cx = -1; /* usually contains garbage */ + } else { + /* We're probably in an interrupt or exception. */ + regs_user->abi = user_64bit_mode(user_regs) ? + PERF_SAMPLE_REGS_ABI_64 : PERF_SAMPLE_REGS_ABI_32; + regs_user_copy->sp = user_regs->sp; + regs_user_copy->cs = user_regs->cs; + regs_user_copy->ss = user_regs->ss; + } + + regs_user->regs = regs_user_copy; +} #endif /* CONFIG_X86_32 */ diff --git a/arch/x86/lib/insn.c b/arch/x86/lib/insn.c index 2480978b31cc..1313ae6b478b 100644 --- a/arch/x86/lib/insn.c +++ b/arch/x86/lib/insn.c @@ -28,7 +28,7 @@ /* Verify next sizeof(t) bytes can be on the same instruction */ #define validate_next(t, insn, n) \ - ((insn)->next_byte + sizeof(t) + n < (insn)->end_kaddr) + ((insn)->next_byte + sizeof(t) + n <= (insn)->end_kaddr) #define __get_next(t, insn) \ ({ t r = *(t*)insn->next_byte; insn->next_byte += sizeof(t); r; }) diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 486e84ccb1f9..4f7a61ca4b39 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -79,11 +79,6 @@ struct perf_branch_stack { struct perf_branch_entry entries[0]; }; -struct perf_regs { - __u64 abi; - struct pt_regs *regs; -}; - struct task_struct; /* @@ -610,7 +605,14 @@ struct perf_sample_data { u32 reserved; } cpu_entry; struct perf_callchain_entry *callchain; + + /* + * regs_user may point to task_pt_regs or to regs_user_copy, depending + * on arch details. + */ struct perf_regs regs_user; + struct pt_regs regs_user_copy; + struct perf_regs regs_intr; u64 stack_user_size; } ____cacheline_aligned; diff --git a/include/linux/perf_regs.h b/include/linux/perf_regs.h index 3c73d5fe18be..a5f98d53d732 100644 --- a/include/linux/perf_regs.h +++ b/include/linux/perf_regs.h @@ -1,11 +1,19 @@ #ifndef _LINUX_PERF_REGS_H #define _LINUX_PERF_REGS_H +struct perf_regs { + __u64 abi; + struct pt_regs *regs; +}; + #ifdef CONFIG_HAVE_PERF_REGS #include <asm/perf_regs.h> u64 perf_reg_value(struct pt_regs *regs, int idx); int perf_reg_validate(u64 mask); u64 perf_reg_abi(struct task_struct *task); +void perf_get_regs_user(struct perf_regs *regs_user, + struct pt_regs *regs, + struct pt_regs *regs_user_copy); #else static inline u64 perf_reg_value(struct pt_regs *regs, int idx) { @@ -21,5 +29,13 @@ static inline u64 perf_reg_abi(struct task_struct *task) { return PERF_SAMPLE_REGS_ABI_NONE; } + +static inline void perf_get_regs_user(struct perf_regs *regs_user, + struct pt_regs *regs, + struct pt_regs *regs_user_copy) +{ + regs_user->regs = task_pt_regs(current); + regs_user->abi = perf_reg_abi(current); +} #endif /* CONFIG_HAVE_PERF_REGS */ #endif /* _LINUX_PERF_REGS_H */ diff --git a/kernel/events/core.c b/kernel/events/core.c index 4c1ee7f2bebc..882f835a0d85 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -4461,18 +4461,14 @@ perf_output_sample_regs(struct perf_output_handle *handle, } static void perf_sample_regs_user(struct perf_regs *regs_user, - struct pt_regs *regs) + struct pt_regs *regs, + struct pt_regs *regs_user_copy) { - if (!user_mode(regs)) { - if (current->mm) - regs = task_pt_regs(current); - else - regs = NULL; - } - - if (regs) { - regs_user->abi = perf_reg_abi(current); + if (user_mode(regs)) { + regs_user->abi = perf_reg_abi(current); regs_user->regs = regs; + } else if (current->mm) { + perf_get_regs_user(regs_user, regs, regs_user_copy); } else { regs_user->abi = PERF_SAMPLE_REGS_ABI_NONE; regs_user->regs = NULL; @@ -4951,7 +4947,8 @@ void perf_prepare_sample(struct perf_event_header *header, } if (sample_type & (PERF_SAMPLE_REGS_USER | PERF_SAMPLE_STACK_USER)) - perf_sample_regs_user(&data->regs_user, regs); + perf_sample_regs_user(&data->regs_user, regs, + &data->regs_user_copy); if (sample_type & PERF_SAMPLE_REGS_USER) { /* regs dump ABI info */ diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c index e7417fe97a97..747f86103599 100644 --- a/tools/perf/builtin-annotate.c +++ b/tools/perf/builtin-annotate.c @@ -232,7 +232,7 @@ static int __cmd_annotate(struct perf_annotate *ann) if (nr_samples > 0) { total_nr_samples += nr_samples; hists__collapse_resort(hists, NULL); - hists__output_resort(hists); + hists__output_resort(hists, NULL); if (symbol_conf.event_group && !perf_evsel__is_group_leader(pos)) diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c index 1ce425d101a9..1fd96c13f199 100644 --- a/tools/perf/builtin-diff.c +++ b/tools/perf/builtin-diff.c @@ -545,6 +545,42 @@ hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right, return __hist_entry__cmp_compute(p_left, p_right, c); } +static int64_t +hist_entry__cmp_nop(struct hist_entry *left __maybe_unused, + struct hist_entry *right __maybe_unused) +{ + return 0; +} + +static int64_t +hist_entry__cmp_baseline(struct hist_entry *left, struct hist_entry *right) +{ + if (sort_compute) + return 0; + + if (left->stat.period == right->stat.period) + return 0; + return left->stat.period > right->stat.period ? 1 : -1; +} + +static int64_t +hist_entry__cmp_delta(struct hist_entry *left, struct hist_entry *right) +{ + return hist_entry__cmp_compute(right, left, COMPUTE_DELTA); +} + +static int64_t +hist_entry__cmp_ratio(struct hist_entry *left, struct hist_entry *right) +{ + return hist_entry__cmp_compute(right, left, COMPUTE_RATIO); +} + +static int64_t +hist_entry__cmp_wdiff(struct hist_entry *left, struct hist_entry *right) +{ + return hist_entry__cmp_compute(right, left, COMPUTE_WEIGHTED_DIFF); +} + static void insert_hist_entry_by_compute(struct rb_root *root, struct hist_entry *he, int c) @@ -605,7 +641,7 @@ static void hists__process(struct hists *hists) hists__precompute(hists); hists__compute_resort(hists); } else { - hists__output_resort(hists); + hists__output_resort(hists, NULL); } hists__fprintf(hists, true, 0, 0, 0, stdout); @@ -1038,27 +1074,35 @@ static void data__hpp_register(struct data__file *d, int idx) fmt->header = hpp__header; fmt->width = hpp__width; fmt->entry = hpp__entry_global; + fmt->cmp = hist_entry__cmp_nop; + fmt->collapse = hist_entry__cmp_nop; /* TODO more colors */ switch (idx) { case PERF_HPP_DIFF__BASELINE: fmt->color = hpp__color_baseline; + fmt->sort = hist_entry__cmp_baseline; break; case PERF_HPP_DIFF__DELTA: fmt->color = hpp__color_delta; + fmt->sort = hist_entry__cmp_delta; break; case PERF_HPP_DIFF__RATIO: fmt->color = hpp__color_ratio; + fmt->sort = hist_entry__cmp_ratio; break; case PERF_HPP_DIFF__WEIGHTED_DIFF: fmt->color = hpp__color_wdiff; + fmt->sort = hist_entry__cmp_wdiff; break; default: + fmt->sort = hist_entry__cmp_nop; break; } init_header(d, dfmt); perf_hpp__column_register(fmt); + perf_hpp__register_sort_field(fmt); } static void ui_init(void) diff --git a/tools/perf/builtin-list.c b/tools/perf/builtin-list.c index 011195e38f21..198f3c3aff95 100644 --- a/tools/perf/builtin-list.c +++ b/tools/perf/builtin-list.c @@ -19,7 +19,9 @@ int cmd_list(int argc, const char **argv, const char *prefix __maybe_unused) { int i; - const struct option list_options[] = { + bool raw_dump = false; + struct option list_options[] = { + OPT_BOOLEAN(0, "raw-dump", &raw_dump, "Dump raw events"), OPT_END() }; const char * const list_usage[] = { @@ -27,11 +29,18 @@ int cmd_list(int argc, const char **argv, const char *prefix __maybe_unused) NULL }; + set_option_flag(list_options, 0, "raw-dump", PARSE_OPT_HIDDEN); + argc = parse_options(argc, argv, list_options, list_usage, PARSE_OPT_STOP_AT_NON_OPTION); setup_pager(); + if (raw_dump) { + print_events(NULL, true); + return 0; + } + if (argc == 0) { print_events(NULL, false); return 0; @@ -53,8 +62,6 @@ int cmd_list(int argc, const char **argv, const char *prefix __maybe_unused) print_hwcache_events(NULL, false); else if (strcmp(argv[i], "pmu") == 0) print_pmu_events(NULL, false); - else if (strcmp(argv[i], "--raw-dump") == 0) - print_events(NULL, true); else { char *sep = strchr(argv[i], ':'), *s; int sep_idx; diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 39367609c707..072ae8ad67fc 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -457,6 +457,19 @@ static void report__collapse_hists(struct report *rep) ui_progress__finish(); } +static void report__output_resort(struct report *rep) +{ + struct ui_progress prog; + struct perf_evsel *pos; + + ui_progress__init(&prog, rep->nr_entries, "Sorting events for output..."); + + evlist__for_each(rep->session->evlist, pos) + hists__output_resort(evsel__hists(pos), &prog); + + ui_progress__finish(); +} + static int __cmd_report(struct report *rep) { int ret; @@ -505,13 +518,20 @@ static int __cmd_report(struct report *rep) if (session_done()) return 0; + /* + * recalculate number of entries after collapsing since it + * might be changed during the collapse phase. + */ + rep->nr_entries = 0; + evlist__for_each(session->evlist, pos) + rep->nr_entries += evsel__hists(pos)->nr_entries; + if (rep->nr_entries == 0) { ui__error("The %s file has no samples!\n", file->path); return 0; } - evlist__for_each(session->evlist, pos) - hists__output_resort(evsel__hists(pos)); + report__output_resort(rep); return report__browse_hists(rep); } diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 0aa7747ff139..961cea183a83 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -285,7 +285,7 @@ static void perf_top__print_sym_table(struct perf_top *top) } hists__collapse_resort(hists, NULL); - hists__output_resort(hists); + hists__output_resort(hists, NULL); hists__output_recalc_col_len(hists, top->print_entries - printed); putchar('\n'); @@ -554,7 +554,7 @@ static void perf_top__sort_new_samples(void *arg) } hists__collapse_resort(hists, NULL); - hists__output_resort(hists); + hists__output_resort(hists, NULL); } static void *display_thread_tui(void *arg) diff --git a/tools/perf/tests/hists_cumulate.c b/tools/perf/tests/hists_cumulate.c index 614d5c4978ab..8d110dec393e 100644 --- a/tools/perf/tests/hists_cumulate.c +++ b/tools/perf/tests/hists_cumulate.c @@ -187,7 +187,7 @@ static int do_test(struct hists *hists, struct result *expected, size_t nr_expec * function since TEST_ASSERT_VAL() returns in case of failure. */ hists__collapse_resort(hists, NULL); - hists__output_resort(hists); + hists__output_resort(hists, NULL); if (verbose > 2) { pr_info("use callchain: %d, cumulate callchain: %d\n", @@ -454,12 +454,12 @@ static int test3(struct perf_evsel *evsel, struct machine *machine) * 30.00% 10.00% perf perf [.] cmd_record * 20.00% 0.00% bash libc [.] malloc * 10.00% 10.00% bash [kernel] [k] page_fault - * 10.00% 10.00% perf [kernel] [k] schedule - * 10.00% 0.00% perf [kernel] [k] sys_perf_event_open + * 10.00% 10.00% bash bash [.] xmalloc * 10.00% 10.00% perf [kernel] [k] page_fault - * 10.00% 10.00% perf libc [.] free * 10.00% 10.00% perf libc [.] malloc - * 10.00% 10.00% bash bash [.] xmalloc + * 10.00% 10.00% perf [kernel] [k] schedule + * 10.00% 10.00% perf libc [.] free + * 10.00% 0.00% perf [kernel] [k] sys_perf_event_open */ struct result expected[] = { { 7000, 2000, "perf", "perf", "main" }, @@ -468,12 +468,12 @@ static int test3(struct perf_evsel *evsel, struct machine *machine) { 3000, 1000, "perf", "perf", "cmd_record" }, { 2000, 0, "bash", "libc", "malloc" }, { 1000, 1000, "bash", "[kernel]", "page_fault" }, - { 1000, 1000, "perf", "[kernel]", "schedule" }, - { 1000, 0, "perf", "[kernel]", "sys_perf_event_open" }, + { 1000, 1000, "bash", "bash", "xmalloc" }, { 1000, 1000, "perf", "[kernel]", "page_fault" }, + { 1000, 1000, "perf", "[kernel]", "schedule" }, { 1000, 1000, "perf", "libc", "free" }, { 1000, 1000, "perf", "libc", "malloc" }, - { 1000, 1000, "bash", "bash", "xmalloc" }, + { 1000, 0, "perf", "[kernel]", "sys_perf_event_open" }, }; symbol_conf.use_callchain = false; @@ -537,10 +537,13 @@ static int test4(struct perf_evsel *evsel, struct machine *machine) * malloc * main * - * 10.00% 10.00% perf [kernel] [k] schedule + * 10.00% 10.00% bash bash [.] xmalloc * | - * --- schedule - * run_command + * --- xmalloc + * malloc + * xmalloc <--- NOTE: there's a cycle + * malloc + * xmalloc * main * * 10.00% 0.00% perf [kernel] [k] sys_perf_event_open @@ -556,6 +559,12 @@ static int test4(struct perf_evsel *evsel, struct machine *machine) * run_command * main * + * 10.00% 10.00% perf [kernel] [k] schedule + * | + * --- schedule + * run_command + * main + * * 10.00% 10.00% perf libc [.] free * | * --- free @@ -570,15 +579,6 @@ static int test4(struct perf_evsel *evsel, struct machine *machine) * run_command * main * - * 10.00% 10.00% bash bash [.] xmalloc - * | - * --- xmalloc - * malloc - * xmalloc <--- NOTE: there's a cycle - * malloc - * xmalloc - * main - * */ struct result expected[] = { { 7000, 2000, "perf", "perf", "main" }, @@ -587,12 +587,12 @@ static int test4(struct perf_evsel *evsel, struct machine *machine) { 3000, 1000, "perf", "perf", "cmd_record" }, { 2000, 0, "bash", "libc", "malloc" }, { 1000, 1000, "bash", "[kernel]", "page_fault" }, - { 1000, 1000, "perf", "[kernel]", "schedule" }, + { 1000, 1000, "bash", "bash", "xmalloc" }, { 1000, 0, "perf", "[kernel]", "sys_perf_event_open" }, { 1000, 1000, "perf", "[kernel]", "page_fault" }, + { 1000, 1000, "perf", "[kernel]", "schedule" }, { 1000, 1000, "perf", "libc", "free" }, { 1000, 1000, "perf", "libc", "malloc" }, - { 1000, 1000, "bash", "bash", "xmalloc" }, }; struct callchain_result expected_callchain[] = { { @@ -622,9 +622,12 @@ static int test4(struct perf_evsel *evsel, struct machine *machine) { "bash", "main" }, }, }, { - 3, { { "[kernel]", "schedule" }, - { "perf", "run_command" }, - { "perf", "main" }, }, + 6, { { "bash", "xmalloc" }, + { "libc", "malloc" }, + { "bash", "xmalloc" }, + { "libc", "malloc" }, + { "bash", "xmalloc" }, + { "bash", "main" }, }, }, { 3, { { "[kernel]", "sys_perf_event_open" }, @@ -638,6 +641,11 @@ static int test4(struct perf_evsel *evsel, struct machine *machine) { "perf", "main" }, }, }, { + 3, { { "[kernel]", "schedule" }, + { "perf", "run_command" }, + { "perf", "main" }, }, + }, + { 4, { { "libc", "free" }, { "perf", "cmd_record" }, { "perf", "run_command" }, @@ -649,14 +657,6 @@ static int test4(struct perf_evsel *evsel, struct machine *machine) { "perf", "run_command" }, { "perf", "main" }, }, }, - { - 6, { { "bash", "xmalloc" }, - { "libc", "malloc" }, - { "bash", "xmalloc" }, - { "libc", "malloc" }, - { "bash", "xmalloc" }, - { "bash", "main" }, }, - }, }; symbol_conf.use_callchain = true; diff --git a/tools/perf/tests/hists_filter.c b/tools/perf/tests/hists_filter.c index 74f257a81265..59e53db7914c 100644 --- a/tools/perf/tests/hists_filter.c +++ b/tools/perf/tests/hists_filter.c @@ -138,7 +138,7 @@ int test__hists_filter(void) struct hists *hists = evsel__hists(evsel); hists__collapse_resort(hists, NULL); - hists__output_resort(hists); + hists__output_resort(hists, NULL); if (verbose > 2) { pr_info("Normal histogram\n"); diff --git a/tools/perf/tests/hists_output.c b/tools/perf/tests/hists_output.c index a748f2be1222..f5547610da02 100644 --- a/tools/perf/tests/hists_output.c +++ b/tools/perf/tests/hists_output.c @@ -152,7 +152,7 @@ static int test1(struct perf_evsel *evsel, struct machine *machine) goto out; hists__collapse_resort(hists, NULL); - hists__output_resort(hists); + hists__output_resort(hists, NULL); if (verbose > 2) { pr_info("[fields = %s, sort = %s]\n", field_order, sort_order); @@ -252,7 +252,7 @@ static int test2(struct perf_evsel *evsel, struct machine *machine) goto out; hists__collapse_resort(hists, NULL); - hists__output_resort(hists); + hists__output_resort(hists, NULL); if (verbose > 2) { pr_info("[fields = %s, sort = %s]\n", field_order, sort_order); @@ -306,7 +306,7 @@ static int test3(struct perf_evsel *evsel, struct machine *machine) goto out; hists__collapse_resort(hists, NULL); - hists__output_resort(hists); + hists__output_resort(hists, NULL); if (verbose > 2) { pr_info("[fields = %s, sort = %s]\n", field_order, sort_order); @@ -384,7 +384,7 @@ static int test4(struct perf_evsel *evsel, struct machine *machine) goto out; hists__collapse_resort(hists, NULL); - hists__output_resort(hists); + hists__output_resort(hists, NULL); if (verbose > 2) { pr_info("[fields = %s, sort = %s]\n", field_order, sort_order); @@ -487,7 +487,7 @@ static int test5(struct perf_evsel *evsel, struct machine *machine) goto out; hists__collapse_resort(hists, NULL); - hists__output_resort(hists); + hists__output_resort(hists, NULL); if (verbose > 2) { pr_info("[fields = %s, sort = %s]\n", field_order, sort_order); diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c index e6bb04b5b09b..788506eef567 100644 --- a/tools/perf/ui/browsers/hists.c +++ b/tools/perf/ui/browsers/hists.c @@ -550,7 +550,7 @@ static int hist_browser__show_callchain(struct hist_browser *browser, bool need_percent; node = rb_first(root); - need_percent = !!rb_next(node); + need_percent = node && rb_next(node); while (node) { struct callchain_node *child = rb_entry(node, struct callchain_node, rb_node); diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c index dc0d095f318c..482adae3cc44 100644 --- a/tools/perf/ui/hist.c +++ b/tools/perf/ui/hist.c @@ -204,6 +204,9 @@ static int __hpp__sort_acc(struct hist_entry *a, struct hist_entry *b, if (ret) return ret; + if (a->thread != b->thread || !symbol_conf.use_callchain) + return 0; + ret = b->callchain->max_depth - a->callchain->max_depth; } return ret; diff --git a/tools/perf/ui/tui/setup.c b/tools/perf/ui/tui/setup.c index 2f612562978c..3c38f25b1695 100644 --- a/tools/perf/ui/tui/setup.c +++ b/tools/perf/ui/tui/setup.c @@ -1,5 +1,8 @@ #include <signal.h> #include <stdbool.h> +#ifdef HAVE_BACKTRACE_SUPPORT +#include <execinfo.h> +#endif #include "../../util/cache.h" #include "../../util/debug.h" @@ -88,6 +91,25 @@ int ui__getch(int delay_secs) return SLkp_getkey(); } +#ifdef HAVE_BACKTRACE_SUPPORT +static void ui__signal_backtrace(int sig) +{ + void *stackdump[32]; + size_t size; + + ui__exit(false); + psignal(sig, "perf"); + + printf("-------- backtrace --------\n"); + size = backtrace(stackdump, ARRAY_SIZE(stackdump)); + backtrace_symbols_fd(stackdump, size, STDOUT_FILENO); + + exit(0); +} +#else +# define ui__signal_backtrace ui__signal +#endif + static void ui__signal(int sig) { ui__exit(false); @@ -122,8 +144,8 @@ int ui__init(void) ui_browser__init(); tui_progress__init(); - signal(SIGSEGV, ui__signal); - signal(SIGFPE, ui__signal); + signal(SIGSEGV, ui__signal_backtrace); + signal(SIGFPE, ui__signal_backtrace); signal(SIGINT, ui__signal); signal(SIGQUIT, ui__signal); signal(SIGTERM, ui__signal); diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c index 64b377e591e4..14e7a123d43b 100644 --- a/tools/perf/util/callchain.c +++ b/tools/perf/util/callchain.c @@ -841,3 +841,33 @@ char *callchain_list__sym_name(struct callchain_list *cl, return bf; } + +static void free_callchain_node(struct callchain_node *node) +{ + struct callchain_list *list, *tmp; + struct callchain_node *child; + struct rb_node *n; + + list_for_each_entry_safe(list, tmp, &node->val, list) { + list_del(&list->list); + free(list); + } + + n = rb_first(&node->rb_root_in); + while (n) { + child = container_of(n, struct callchain_node, rb_node_in); + n = rb_next(n); + rb_erase(&child->rb_node_in, &node->rb_root_in); + + free_callchain_node(child); + free(child); + } +} + +void free_callchain(struct callchain_root *root) +{ + if (!symbol_conf.use_callchain) + return; + + free_callchain_node(&root->node); +} diff --git a/tools/perf/util/callchain.h b/tools/perf/util/callchain.h index dbc08cf5f970..c0ec1acc38e4 100644 --- a/tools/perf/util/callchain.h +++ b/tools/perf/util/callchain.h @@ -198,4 +198,6 @@ static inline int arch_skip_callchain_idx(struct thread *thread __maybe_unused, char *callchain_list__sym_name(struct callchain_list *cl, char *bf, size_t bfsize, bool show_dso); +void free_callchain(struct callchain_root *root); + #endif /* __PERF_CALLCHAIN_H */ diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c index 6e88b9e395df..182395546ddc 100644 --- a/tools/perf/util/hist.c +++ b/tools/perf/util/hist.c @@ -6,6 +6,7 @@ #include "evlist.h" #include "evsel.h" #include "annotate.h" +#include "ui/progress.h" #include <math.h> static bool hists__filter_entry_by_dso(struct hists *hists, @@ -303,7 +304,7 @@ static struct hist_entry *hist_entry__new(struct hist_entry *template, size_t callchain_size = 0; struct hist_entry *he; - if (symbol_conf.use_callchain || symbol_conf.cumulate_callchain) + if (symbol_conf.use_callchain) callchain_size = sizeof(struct callchain_root); he = zalloc(sizeof(*he) + callchain_size); @@ -736,7 +737,7 @@ iter_add_single_cumulative_entry(struct hist_entry_iter *iter, iter->he = he; he_cache[iter->curr++] = he; - callchain_append(he->callchain, &callchain_cursor, sample->period); + hist_entry__append_callchain(he, sample); /* * We need to re-initialize the cursor since callchain_append() @@ -809,7 +810,8 @@ iter_add_next_cumulative_entry(struct hist_entry_iter *iter, iter->he = he; he_cache[iter->curr++] = he; - callchain_append(he->callchain, &cursor, sample->period); + if (symbol_conf.use_callchain) + callchain_append(he->callchain, &cursor, sample->period); return 0; } @@ -945,6 +947,7 @@ void hist_entry__free(struct hist_entry *he) zfree(&he->mem_info); zfree(&he->stat_acc); free_srcline(he->srcline); + free_callchain(he->callchain); free(he); } @@ -987,6 +990,7 @@ static bool hists__collapse_insert_entry(struct hists *hists __maybe_unused, else p = &(*p)->rb_right; } + hists->nr_entries++; rb_link_node(&he->rb_node_in, parent, p); rb_insert_color(&he->rb_node_in, root); @@ -1024,7 +1028,10 @@ void hists__collapse_resort(struct hists *hists, struct ui_progress *prog) if (!sort__need_collapse) return; + hists->nr_entries = 0; + root = hists__get_rotate_entries_in(hists); + next = rb_first(root); while (next) { @@ -1119,7 +1126,7 @@ static void __hists__insert_output_entry(struct rb_root *entries, rb_insert_color(&he->rb_node, entries); } -void hists__output_resort(struct hists *hists) +void hists__output_resort(struct hists *hists, struct ui_progress *prog) { struct rb_root *root; struct rb_node *next; @@ -1148,6 +1155,9 @@ void hists__output_resort(struct hists *hists) if (!n->filtered) hists__calc_col_len(hists, n); + + if (prog) + ui_progress__update(prog, 1); } } diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h index d0ef9a19a744..46bd50344f85 100644 --- a/tools/perf/util/hist.h +++ b/tools/perf/util/hist.h @@ -121,7 +121,7 @@ int hist_entry__sort_snprintf(struct hist_entry *he, char *bf, size_t size, struct hists *hists); void hist_entry__free(struct hist_entry *); -void hists__output_resort(struct hists *hists); +void hists__output_resort(struct hists *hists, struct ui_progress *prog); void hists__collapse_resort(struct hists *hists, struct ui_progress *prog); void hists__decay_entries(struct hists *hists, bool zap_user, bool zap_kernel); diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index 28eb1417cb2a..7f9b8632e433 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -495,9 +495,11 @@ static int try_to_find_probe_trace_events(struct perf_probe_event *pev, } if (ntevs == 0) { /* No error but failed to find probe point. */ - pr_warning("Probe point '%s' not found.\n", + pr_warning("Probe point '%s' not found in debuginfo.\n", synthesize_perf_probe_point(&pev->point)); - return -ENOENT; + if (need_dwarf) + return -ENOENT; + return 0; } /* Error path : ntevs < 0 */ pr_debug("An error occurred in debuginfo analysis (%d).\n", ntevs); diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c index c7918f83b300..b5247d777f0e 100644 --- a/tools/perf/util/probe-finder.c +++ b/tools/perf/util/probe-finder.c @@ -989,8 +989,24 @@ static int debuginfo__find_probes(struct debuginfo *dbg, int ret = 0; #if _ELFUTILS_PREREQ(0, 142) + Elf *elf; + GElf_Ehdr ehdr; + GElf_Shdr shdr; + /* Get the call frame information from this dwarf */ - pf->cfi = dwarf_getcfi_elf(dwarf_getelf(dbg->dbg)); + elf = dwarf_getelf(dbg->dbg); + if (elf == NULL) + return -EINVAL; + + if (gelf_getehdr(elf, &ehdr) == NULL) + return -EINVAL; + + if (elf_section_by_name(elf, &ehdr, &shdr, ".eh_frame", NULL) && + shdr.sh_type == SHT_PROGBITS) { + pf->cfi = dwarf_getcfi_elf(elf); + } else { + pf->cfi = dwarf_getcfi(dbg->dbg); + } #endif off = 0; |