diff options
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/Documentation/perf-trace.txt | 3 | ||||
| -rw-r--r-- | tools/perf/builtin-trace.c | 9 |
2 files changed, 11 insertions, 1 deletions
diff --git a/tools/perf/Documentation/perf-trace.txt b/tools/perf/Documentation/perf-trace.txt index a93e91aad583..37773854d5c4 100644 --- a/tools/perf/Documentation/perf-trace.txt +++ b/tools/perf/Documentation/perf-trace.txt @@ -82,6 +82,9 @@ the thread executes on the designated CPUs. Default is to monitor all CPUs. --time Print full timestamp rather time relative to first sample. +--comm:: + Show process COMM right beside its ID, on by default, disable with --no-comm. + SEE ALSO -------- linkperf:perf-record[1], linkperf:perf-script[1] diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 8a09ba3dcd97..be658433d3bb 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -726,6 +726,7 @@ struct trace { struct intlist *pid_list; bool sched; bool multiple_threads; + bool show_comm; double duration_filter; double runtime_ms; }; @@ -755,8 +756,11 @@ static size_t trace__fprintf_entry_head(struct trace *trace, struct thread *thre size_t printed = trace__fprintf_tstamp(trace, tstamp, fp); printed += fprintf_duration(duration, fp); - if (trace->multiple_threads) + if (trace->multiple_threads) { + if (trace->show_comm) + printed += fprintf(fp, "%.14s/", thread->comm); printed += fprintf(fp, "%d ", thread->tid); + } return printed; } @@ -1503,10 +1507,13 @@ int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused) .mmap_pages = 1024, }, .output = stdout, + .show_comm = true, }; const char *output_name = NULL; const char *ev_qualifier_str = NULL; const struct option trace_options[] = { + OPT_BOOLEAN(0, "comm", &trace.show_comm, + "show the thread COMM next to its id"), OPT_STRING('e', "expr", &ev_qualifier_str, "expr", "list of events to trace"), OPT_STRING('o', "output", &output_name, "file", "output file name"), |