diff options
| author |   Leo Yan <leo.yan@arm.com> | 2025-05-28 16:35:19 +0100 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2025-05-28 15:08:25 -0300 |
| commit | e8718f9866e5aa25724bc85a518ed5d6ad9d4bb4 (patch) | |
| tree | 7d1e87f8d9e55ec1c908470fbe406912e8b0aacb /tools/perf | |
| parent | perf mem: Show absolute percent in mem_stat output (diff) | |
| download | linux-rng-e8718f9866e5aa25724bc85a518ed5d6ad9d4bb4.tar.xz linux-rng-e8718f9866e5aa25724bc85a518ed5d6ad9d4bb4.zip | |
perf script: Print PERF_AUX_FLAG_COLLISION flag
Print out the collision flag for AUX trace data. This is helpful for
inspecting sample collisions.
After:
0x217b60@/data_nvme1n1/niayan01/upstream/perf.data [0x40]: event: 11
.
. ... raw event: size 64 bytes
. 0000: 0b 00 00 00 00 00 40 00 d2 ef 3f 00 00 00 00 00 ......@...?.....
. 0010: ff 0f 00 00 00 00 00 00 08 00 00 00 00 00 00 00 ................
. 0020: 1c 01 00 00 1c 01 00 00 10 bf 38 d6 11 01 00 00 ..........8.....
. 0030: 03 00 00 00 00 00 00 00 06 00 00 00 00 00 00 00 ................
3 1176120114960 0x217b60 [0x40]: PERF_RECORD_AUX offset: 0x3fefd2 size: 0xfff flags: 0x8 [C]
The added character '[C]' indicates the collision.
Signed-off-by: Leo Yan <leo.yan@arm.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20250528153519.188644-1-leo.yan@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/util/event.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c index 80c9ea682413..7544a3104e21 100644 --- a/tools/perf/util/event.c +++ b/tools/perf/util/event.c @@ -449,12 +449,13 @@ int perf_event__exit_del_thread(const struct perf_tool *tool __maybe_unused, size_t perf_event__fprintf_aux(union perf_event *event, FILE *fp) { - return fprintf(fp, " offset: %#"PRI_lx64" size: %#"PRI_lx64" flags: %#"PRI_lx64" [%s%s%s]\n", + return fprintf(fp, " offset: %#"PRI_lx64" size: %#"PRI_lx64" flags: %#"PRI_lx64" [%s%s%s%s]\n", event->aux.aux_offset, event->aux.aux_size, event->aux.flags, event->aux.flags & PERF_AUX_FLAG_TRUNCATED ? "T" : "", event->aux.flags & PERF_AUX_FLAG_OVERWRITE ? "O" : "", - event->aux.flags & PERF_AUX_FLAG_PARTIAL ? "P" : ""); + event->aux.flags & PERF_AUX_FLAG_PARTIAL ? "P" : "", + event->aux.flags & PERF_AUX_FLAG_COLLISION ? "C" : ""); } size_t perf_event__fprintf_itrace_start(union perf_event *event, FILE *fp) |