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authorRavi Bangoria <ravi.bangoria@amd.com>2022-10-06 18:39:42 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2022-10-06 22:29:32 +0300
commit4173cc055dc92f199a43775775e54dc7fafd37b6 (patch)
tree614cc01080453fa32045f8d4d253973bf71c5145 /tools/perf/builtin-c2c.c
parent923396f6827d00ef18c1bf589551e5a604191261 (diff)
downloadlinux-4173cc055dc92f199a43775775e54dc7fafd37b6.tar.xz
perf mem/c2c: Set PERF_SAMPLE_WEIGHT for LOAD_STORE events
Currently perf sets PERF_SAMPLE_WEIGHT flag only for mem load events. Set it for combined load-store event as well which will enable recording of load latency by default on arch that does not support independent mem load event. Also document missing -W in perf-record man page. Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ali Saidi <alisaidi@amazon.com> Cc: Ananth Narayan <ananth.narayan@amd.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Joe Mario <jmario@redhat.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Kim Phillips <kim.phillips@amd.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sandipan Das <sandipan.das@amd.com> Cc: Santosh Shukla <santosh.shukla@amd.com> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: x86@kernel.org Link: https://lore.kernel.org/r/20221006153946.7816-5-ravi.bangoria@amd.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-c2c.c')
-rw-r--r--tools/perf/builtin-c2c.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index f35a47b2dbe4..a9190458d2d5 100644
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -3281,6 +3281,7 @@ static int perf_c2c__record(int argc, const char **argv)
*/
if (e->tag) {
e->record = true;
+ rec_argv[i++] = "-W";
} else {
e = perf_mem_events__ptr(PERF_MEM_EVENTS__LOAD);
e->record = true;