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Date: Sat, 3 Oct 2015 00:50:18 -0700
From: tip-bot for Arnaldo Carvalho de Melo <tipbot@...or.com>
To: linux-tip-commits@...r.kernel.org
Cc: fweisbec@...il.com, eranian@...gle.com, tglx@...utronix.de,
acme@...hat.com, bp@...e.de, adrian.hunter@...el.com,
linux-kernel@...r.kernel.org, dsahern@...il.com,
namhyung@...nel.org, hpa@...or.com, wangnan0@...wei.com,
jolsa@...hat.com, mingo@...nel.org
Subject: [tip:perf/core] perf list:
Do event name substring search as last resort when no events found
Commit-ID: dbc67409fa912ba063dfa956af0543af1258fc97
Gitweb: http://git.kernel.org/tip/dbc67409fa912ba063dfa956af0543af1258fc97
Author: Arnaldo Carvalho de Melo <acme@...hat.com>
AuthorDate: Thu, 1 Oct 2015 12:12:22 -0300
Committer: Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Thu, 1 Oct 2015 12:12:22 -0300
perf list: Do event name substring search as last resort when no events found
Before:
# perf list _alloc_ | head -10
#
After:
# perf list _alloc_ | head -10
ext4:ext4_alloc_da_blocks [Tracepoint event]
ext4:ext4_get_implied_cluster_alloc_exit [Tracepoint event]
kmem:kmem_cache_alloc_node [Tracepoint event]
kmem:mm_page_alloc_extfrag [Tracepoint event]
kmem:mm_page_alloc_zone_locked [Tracepoint event]
xen:xen_mmu_alloc_ptpage [Tracepoint event]
#
And it works for all types of events:
# perf list br
List of pre-defined events (to be used in -e):
branch-instructions OR branches [Hardware event]
branch-misses [Hardware event]
branch-load-misses [Hardware cache event]
branch-loads [Hardware cache event]
branch-instructions OR cpu/branch-instructions/ [Kernel PMU event]
branch-misses OR cpu/branch-misses/ [Kernel PMU event]
filelock:break_lease_block [Tracepoint event]
filelock:break_lease_noblock [Tracepoint event]
filelock:break_lease_unblock [Tracepoint event]
syscalls:sys_enter_brk [Tracepoint event]
syscalls:sys_exit_brk [Tracepoint event]
#
Suggested-by: Ingo Molnar <mingo@...nel.org>
Cc: Adrian Hunter <adrian.hunter@...el.com>
Cc: Borislav Petkov <bp@...e.de>
Cc: David Ahern <dsahern@...il.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Stephane Eranian <eranian@...gle.com>
Cc: Wang Nan <wangnan0@...wei.com>
Link: http://lkml.kernel.org/n/tip-qieivl18jdemoaghgndj36e6@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
tools/perf/Documentation/perf-list.txt | 2 ++
tools/perf/builtin-list.c | 18 ++++++++++++++++--
2 files changed, 18 insertions(+), 2 deletions(-)
diff --git a/tools/perf/Documentation/perf-list.txt b/tools/perf/Documentation/perf-list.txt
index bada893..ad60c6e 100644
--- a/tools/perf/Documentation/perf-list.txt
+++ b/tools/perf/Documentation/perf-list.txt
@@ -125,6 +125,8 @@ To limit the list use:
. If none of the above is matched, it will apply the supplied glob to all
events, printing the ones that match.
+. As a last resort, it will do a substring search in all event names.
+
One or more types can be used at the same time, listing the events for the
types specified.
diff --git a/tools/perf/builtin-list.c b/tools/perf/builtin-list.c
index 6024140..bf679e2 100644
--- a/tools/perf/builtin-list.c
+++ b/tools/perf/builtin-list.c
@@ -45,6 +45,8 @@ int cmd_list(int argc, const char **argv, const char *prefix __maybe_unused)
}
for (i = 0; i < argc; ++i) {
+ char *sep, *s;
+
if (strcmp(argv[i], "tracepoint") == 0)
print_tracepoint_events(NULL, NULL, raw_dump);
else if (strcmp(argv[i], "hw") == 0 ||
@@ -60,8 +62,7 @@ int cmd_list(int argc, const char **argv, const char *prefix __maybe_unused)
print_hwcache_events(NULL, raw_dump);
else if (strcmp(argv[i], "pmu") == 0)
print_pmu_events(NULL, raw_dump);
- else {
- char *sep = strchr(argv[i], ':'), *s;
+ else if ((sep = strchr(argv[i], ':')) != NULL) {
int sep_idx;
if (sep == NULL) {
@@ -76,6 +77,19 @@ int cmd_list(int argc, const char **argv, const char *prefix __maybe_unused)
s[sep_idx] = '\0';
print_tracepoint_events(s, s + sep_idx + 1, raw_dump);
free(s);
+ } else {
+ if (asprintf(&s, "*%s*", argv[i]) < 0) {
+ printf("Critical: Not enough memory! Trying to continue...\n");
+ continue;
+ }
+ print_symbol_events(s, PERF_TYPE_HARDWARE,
+ event_symbols_hw, PERF_COUNT_HW_MAX, raw_dump);
+ print_symbol_events(s, PERF_TYPE_SOFTWARE,
+ event_symbols_sw, PERF_COUNT_SW_MAX, raw_dump);
+ print_hwcache_events(s, raw_dump);
+ print_pmu_events(s, raw_dump);
+ print_tracepoint_events(NULL, s, raw_dump);
+ free(s);
}
}
return 0;
--
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