diff options
| author | Mathieu Poirier <mathieu.poirier@linaro.org> | 2018-04-27 14:01:54 -0600 |
|---|---|---|
| committer | Mathieu Poirier <mathieu.poirier@linaro.org> | 2019-05-23 15:41:56 -0600 |
| commit | 882aa5a15dba6b0c19db423265128ae53507ccfc (patch) | |
| tree | 33f40f5cbe9810af1f65f460652fb7f9f449f702 | |
| parent | 7bfb23ecad6a8e04b46a84859866c4bacb03f4d9 (diff) | |
perf tools: Add handling of itrace start events
Add handling of ITRACE events in order to add the tid/pid of the executing
process to the perf tools machine infrastructure. This information is
later retrieved when a contextID packet is found in the trace stream.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
| -rw-r--r-- | tools/perf/util/cs-etm.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c index de488b43f440..0742c50fce46 100644 --- a/tools/perf/util/cs-etm.c +++ b/tools/perf/util/cs-etm.c @@ -1657,6 +1657,29 @@ static int cs_etm__process_timeless_queues(struct cs_etm_auxtrace *etm, return 0; } +static int cs_etm__process_itrace_start(struct cs_etm_auxtrace *etm, + union perf_event *event) +{ + struct thread *th; + + if (etm->timeless_decoding) + return 0; + + /* + * Add the tid/pid to the log so that we can get a match when + * we get a contextID from the decoder. + */ + th = machine__findnew_thread(etm->machine, + event->itrace_start.pid, + event->itrace_start.tid); + if (!th) + return -ENOMEM; + + thread__put(th); + + return 0; +} + static int cs_etm__process_event(struct perf_session *session, union perf_event *event, struct perf_sample *sample, @@ -1694,6 +1717,9 @@ static int cs_etm__process_event(struct perf_session *session, return cs_etm__process_timeless_queues(etm, event->fork.tid); + if (event->header.type == PERF_RECORD_ITRACE_START) + return cs_etm__process_itrace_start(etm, event); + return 0; } |