diff options
| author | Adrian Hunter <adrian.hunter@intel.com> | 2019-11-15 15:42:18 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-11-22 16:48:13 +0300 |
| commit | ba2675bf15fc3ec1d54b9bf938cf5b28392f79fb (patch) | |
| tree | 71d0e1cc4ab2ca4de9d0d16cdb23b1591f2a8383 /tools/perf | |
| parent | eb7a52d46c6ac95df563f867d526b3d46616b10b (diff) | |
| download | linux-ba2675bf15fc3ec1d54b9bf938cf5b28392f79fb.tar.xz | |
perf inject: Cut AUX area samples
After decoding AUX area samples, the AUX area data is no longer needed
(having been replaced by synthesized events) so cut it out.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lore.kernel.org/lkml/20191115124225.5247-9-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/builtin-inject.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c index 1e5d28311e14..9664a72a089d 100644 --- a/tools/perf/builtin-inject.c +++ b/tools/perf/builtin-inject.c @@ -45,6 +45,7 @@ struct perf_inject { u64 aux_id; struct list_head samples; struct itrace_synth_opts itrace_synth_opts; + char event_copy[PERF_SAMPLE_MAX_SIZE]; }; struct event_entry { @@ -214,6 +215,28 @@ static int perf_event__drop_aux(struct perf_tool *tool, return 0; } +static union perf_event * +perf_inject__cut_auxtrace_sample(struct perf_inject *inject, + union perf_event *event, + struct perf_sample *sample) +{ + size_t sz1 = sample->aux_sample.data - (void *)event; + size_t sz2 = event->header.size - sample->aux_sample.size - sz1; + union perf_event *ev = (union perf_event *)inject->event_copy; + + if (sz1 > event->header.size || sz2 > event->header.size || + sz1 + sz2 > event->header.size || + sz1 < sizeof(struct perf_event_header) + sizeof(u64)) + return event; + + memcpy(ev, event, sz1); + memcpy((void *)ev + sz1, (void *)event + event->header.size - sz2, sz2); + ev->header.size = sz1 + sz2; + ((u64 *)((void *)ev + sz1))[-1] = 0; + + return ev; +} + typedef int (*inject_handler)(struct perf_tool *tool, union perf_event *event, struct perf_sample *sample, @@ -226,6 +249,9 @@ static int perf_event__repipe_sample(struct perf_tool *tool, struct evsel *evsel, struct machine *machine) { + struct perf_inject *inject = container_of(tool, struct perf_inject, + tool); + if (evsel && evsel->handler) { inject_handler f = evsel->handler; return f(tool, event, sample, evsel, machine); @@ -233,6 +259,9 @@ static int perf_event__repipe_sample(struct perf_tool *tool, build_id__mark_dso_hit(tool, event, sample, evsel, machine); + if (inject->itrace_synth_opts.set && sample->aux_sample.size) + event = perf_inject__cut_auxtrace_sample(inject, event, sample); + return perf_event__repipe_synth(tool, event); } |