diff options
| author | Adrian Hunter <adrian.hunter@intel.com> | 2015-04-30 17:37:30 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-05-05 18:12:58 -0300 |
| commit | 0ad21f6869222fd7fd7c63f02febea082e801fc2 (patch) | |
| tree | 61456354a313f8f7bf6e38856f46fd33455ac16d /tools/perf/util/session.c | |
| parent | 4a96f7a02eb52b1b618ab610e689bd82770f00b0 (diff) | |
perf tools: Add support for PERF_RECORD_ITRACE_START
Add support for the PERF_RECORD_ITRACE_START event type. This event can
be used to determine the pid and tid that are running when Instruction
Tracing starts. Generally that information would come from a
sched_switch event but, at the start, no sched_switch events may yet
have been recorded.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1430404667-10593-8-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/session.c')
| -rw-r--r-- | tools/perf/util/session.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 0b4646cd5245..e722107f932a 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -327,6 +327,8 @@ void perf_tool__fill_defaults(struct perf_tool *tool) tool->lost = perf_event__process_lost; if (tool->aux == NULL) tool->aux = perf_event__process_aux; + if (tool->itrace_start == NULL) + tool->itrace_start = perf_event__process_itrace_start; if (tool->read == NULL) tool->read = process_event_sample_stub; if (tool->throttle == NULL) @@ -455,6 +457,16 @@ static void perf_event__aux_swap(union perf_event *event, bool sample_id_all) swap_sample_id_all(event, &event->aux + 1); } +static void perf_event__itrace_start_swap(union perf_event *event, + bool sample_id_all) +{ + event->itrace_start.pid = bswap_32(event->itrace_start.pid); + event->itrace_start.tid = bswap_32(event->itrace_start.tid); + + if (sample_id_all) + swap_sample_id_all(event, &event->itrace_start + 1); +} + static void perf_event__throttle_swap(union perf_event *event, bool sample_id_all) { @@ -593,6 +605,7 @@ static perf_event__swap_op perf_event__swap_ops[] = { [PERF_RECORD_UNTHROTTLE] = perf_event__throttle_swap, [PERF_RECORD_SAMPLE] = perf_event__all64_swap, [PERF_RECORD_AUX] = perf_event__aux_swap, + [PERF_RECORD_ITRACE_START] = perf_event__itrace_start_swap, [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap, [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap, [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap, @@ -1044,6 +1057,8 @@ static int machines__deliver_event(struct machines *machines, return tool->unthrottle(tool, event, sample, machine); case PERF_RECORD_AUX: return tool->aux(tool, event, sample, machine); + case PERF_RECORD_ITRACE_START: + return tool->itrace_start(tool, event, sample, machine); default: ++evlist->stats.nr_unknown_events; return -1; |