diff options
Diffstat (limited to 'tools/perf/builtin-record.c')
| -rw-r--r-- | tools/perf/builtin-record.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 142eeb341b29..a01c8ae1ee07 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -636,8 +636,21 @@ static int __cmd_record(struct record *rec, int argc, const char **argv) /* * Let the child rip */ - if (forks) + if (forks) { + union perf_event event; + /* + * Some H/W events are generated before COMM event + * which is emitted during exec(), so perf script + * cannot see a correct process name for those events. + * Synthesize COMM event to prevent it. + */ + perf_event__synthesize_comm(tool, &event, + rec->evlist->workload.pid, + process_synthesized_event, + machine); + perf_evlist__start_workload(rec->evlist); + } if (opts->initial_delay) { usleep(opts->initial_delay * 1000); |