To use dynamic sort keys, it might be good to add an option to see the list of field names.
$ perf evlist -T -i perf.data.sched sched:sched_switch: trace_fields=prev_comm,prev_pid,prev_prio,prev_state,next_comm,next_pid,next_prio sched:sched_stat_wait: trace_fields=comm,pid,delay sched:sched_stat_sleep: trace_fields=comm,pid,delay sched:sched_stat_iowait: trace_fields=comm,pid,delay sched:sched_stat_runtime: trace_fields=comm,pid,runtime,vruntime sched:sched_process_fork: trace_fields=parent_comm,parent_pid,child_comm,child_pid sched:sched_wakeup: trace_fields=comm,pid,prio,success,target_cpu sched:sched_wakeup_new: trace_fields=comm,pid,prio,success,target_cpu sched:sched_migrate_task: trace_fields=comm,pid,prio,orig_cpu,dest_cpu Signed-off-by: Namhyung Kim <namhy...@kernel.org> --- tools/perf/Documentation/perf-evlist.txt | 4 ++++ tools/perf/builtin-evlist.c | 1 + tools/perf/util/evsel.c | 23 +++++++++++++++++++++++ tools/perf/util/evsel.h | 1 + 4 files changed, 29 insertions(+) diff --git a/tools/perf/Documentation/perf-evlist.txt b/tools/perf/Documentation/perf-evlist.txt index 1ceb3700ffbb..b0d99c276cf5 100644 --- a/tools/perf/Documentation/perf-evlist.txt +++ b/tools/perf/Documentation/perf-evlist.txt @@ -32,6 +32,10 @@ OPTIONS --group:: Show event group information. +-T:: +--trace:: + Show tracepoint field names. + SEE ALSO -------- linkperf:perf-record[1], linkperf:perf-list[1], diff --git a/tools/perf/builtin-evlist.c b/tools/perf/builtin-evlist.c index 08a7d36a2cf8..2820bb2d8cf8 100644 --- a/tools/perf/builtin-evlist.c +++ b/tools/perf/builtin-evlist.c @@ -49,6 +49,7 @@ int cmd_evlist(int argc, const char **argv, const char *prefix __maybe_unused) OPT_BOOLEAN('g', "group", &details.event_group, "Show event group information"), OPT_BOOLEAN('f', "force", &details.force, "don't complain, do it"), + OPT_BOOLEAN('T', "trace", &details.trace, "Show tracepoint fields"), OPT_END() }; const char * const evlist_usage[] = { diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 544e4400de13..174d0029e038 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -2298,6 +2298,29 @@ int perf_evsel__fprintf(struct perf_evsel *evsel, printed += comma_fprintf(fp, &first, " %s=%" PRIu64, term, (u64)evsel->attr.sample_freq); } + + if (details->trace) { + struct format_field *field; + + if (evsel->attr.type != PERF_TYPE_TRACEPOINT) { + printed += comma_fprintf(fp, &first, " (not a tracepoint)"); + goto out; + } + + field = evsel->tp_format->format.fields; + if (field == NULL) { + printed += comma_fprintf(fp, &first, " (no trace field)"); + goto out; + } + + printed += comma_fprintf(fp, &first, " trace_fields=%s", field->name); + + field = field->next; + while (field) { + printed += comma_fprintf(fp, &first, "%s", field->name); + field = field->next; + } + } out: fputc('\n', fp); return ++printed; diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index 5ded1fc0341e..9b36dd584d4a 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -369,6 +369,7 @@ struct perf_attr_details { bool verbose; bool event_group; bool force; + bool trace; }; int perf_evsel__fprintf(struct perf_evsel *evsel, -- 2.6.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/