[GIT PULL] perf fixes
From: Ingo Molnar
Date: Sun Jan 11 2015 - 03:43:09 EST
Linus,
Please pull the latest perf-urgent-for-linus git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git perf-urgent-for-linus
# HEAD: 5306c31c5733cb4a79cc002e0c3ad256fd439614 perf/x86/uncore/hsw-ep: Handle systems with only two SBOXes
Mostly tooling fixes, but also some kernel side fixes: uncore PMU
driver fix, user regs sampling fix and an instruction decoder fix
that unbreaks PEBS precise sampling.
Thanks,
Ingo
------------------>
Andi Kleen (1):
perf/x86/uncore/hsw-ep: Handle systems with only two SBOXes
Andy Lutomirski (2):
perf: Move task_pt_regs sampling into arch code
perf/x86_64: Improve user regs sampling
Masami Hiramatsu (1):
perf probe: Fix to fall back to find probe point in symbols
Namhyung Kim (8):
perf report: Show progress bar for output resorting
perf ui/tui: Print backtrace symbols when segfault occurs
perf callchain: Append callchains only when requested
perf probe: Fix crash in dwarf_getcfi_elf
perf diff: Fix to sort by baseline field by default
perf hists: Fix children sort key behavior
perf callchain: Free callchains when hist entries are deleted
perf hists browser: Fix segfault when showing callchain
Peter Zijlstra (1):
x86: Fix off-by-one in instruction decoder
Taesoo Kim (1):
perf list: Fix --raw-dump option
arch/arm/kernel/perf_regs.c | 8 ++
arch/arm64/kernel/perf_regs.c | 8 ++
arch/x86/kernel/cpu/perf_event_intel_uncore.h | 2 +-
.../x86/kernel/cpu/perf_event_intel_uncore_snbep.c | 17 ++++
arch/x86/kernel/perf_regs.c | 90 ++++++++++++++++++++++
arch/x86/lib/insn.c | 2 +-
include/linux/perf_event.h | 12 +--
include/linux/perf_regs.h | 16 ++++
kernel/events/core.c | 19 ++---
tools/perf/builtin-annotate.c | 2 +-
tools/perf/builtin-diff.c | 46 ++++++++++-
tools/perf/builtin-list.c | 13 +++-
tools/perf/builtin-report.c | 24 +++++-
tools/perf/builtin-top.c | 4 +-
tools/perf/tests/hists_cumulate.c | 66 ++++++++--------
tools/perf/tests/hists_filter.c | 2 +-
tools/perf/tests/hists_output.c | 10 +--
tools/perf/ui/browsers/hists.c | 2 +-
tools/perf/ui/hist.c | 3 +
tools/perf/ui/tui/setup.c | 26 ++++++-
tools/perf/util/callchain.c | 30 ++++++++
tools/perf/util/callchain.h | 2 +
tools/perf/util/hist.c | 18 ++++-
tools/perf/util/hist.h | 2 +-
tools/perf/util/probe-event.c | 6 +-
tools/perf/util/probe-finder.c | 18 ++++-
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;
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/