diff options
| -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); } |