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Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Browse Source 
Pull perf fixes from Ingo Molnar:
 "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"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/uncore/hsw-ep: Handle systems with only two SBOXes
  perf/x86_64: Improve user regs sampling
  perf: Move task_pt_regs sampling into arch code
  x86: Fix off-by-one in instruction decoder
  perf hists browser: Fix segfault when showing callchain
  perf callchain: Free callchains when hist entries are deleted
  perf hists: Fix children sort key behavior
  perf diff: Fix to sort by baseline field by default
  perf list: Fix --raw-dump option
  perf probe: Fix crash in dwarf_getcfi_elf
  perf probe: Fix to fall back to find probe point in symbols
  perf callchain: Append callchains only when requested
  perf ui/tui: Print backtrace symbols when segfault occurs
  perf report: Show progress bar for output resorting
This commit is contained in:
Linus Torvalds
2015-01-11 11:47:45 -08:00
parent 1e6c3e8f8f 5306c31c57
commit ddb321a8dd
26 changed files with 372 additions and 78 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
tools/perf/builtin-annotate.c
View File

@@ -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))

46
tools/perf/builtin-diff.c
View File

@@ -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)

13
tools/perf/builtin-list.c
View File

@@ -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;

24
tools/perf/builtin-report.c
View File

@@ -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);
}

4
tools/perf/builtin-top.c
View File

@@ -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)

68
tools/perf/tests/hists_cumulate.c
View File

@@ -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% 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] page_fault
* 10.00% 10.00% perf libc [.] malloc
* 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" },
@@ -637,6 +640,11 @@ static int test4(struct perf_evsel *evsel, struct machine *machine)
{ "perf", "run_command" },
{ "perf", "main" }, },
},
{
3, { { "[kernel]", "schedule" },
{ "perf", "run_command" },
{ "perf", "main" }, },
},
{
4, { { "libc", "free" },
{ "perf", "cmd_record" },
@@ -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;

2
tools/perf/tests/hists_filter.c
View File

@@ -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");

10
tools/perf/tests/hists_output.c
View File

@@ -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);

2
tools/perf/ui/browsers/hists.c
View File

@@ -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);

3
tools/perf/ui/hist.c
View File

@@ -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;

26
tools/perf/ui/tui/setup.c
View File

@@ -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);

30
tools/perf/util/callchain.c
View File

@@ -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);
}

2
tools/perf/util/callchain.h
View File

@@ -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 */

18
tools/perf/util/hist.c
View File

@@ -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);
}
}

2
tools/perf/util/hist.h
View File

@@ -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);

6
tools/perf/util/probe-event.c
View File

@@ -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);

18
tools/perf/util/probe-finder.c
View File

@@ -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;