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perf script: Add option --show-switch-events

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Add option --show-switch-events to show switch events in a similar
fashion to --show-task-events and --show-mmap-events.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1437471846-26995-6-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter 2015-07-21 12:44:06 +03:00 committed by Arnaldo Carvalho de Melo
parent 06b234ec26
commit 7c14898ba9
2 changed files with 35 additions and 0 deletions
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4
tools/perf/Documentation/perf-script.txt
View File

@ -222,6 +222,10 @@ OPTIONS
--show-mmap-events
Display mmap related events (e.g. MMAP, MMAP2).
--show-switch-events
Display context switch events i.e. events of type PERF_RECORD_SWITCH or
PERF_RECORD_SWITCH_CPU_WIDE.
--header
Show perf.data header.

31
tools/perf/builtin-script.c
View File

@ -623,6 +623,7 @@ struct perf_script {
struct perf_session *session;
bool show_task_events;
bool show_mmap_events;
bool show_switch_events;
};
static int process_attr(struct perf_tool *tool, union perf_event *event,
@ -813,6 +814,32 @@ static int process_mmap2_event(struct perf_tool *tool,
return 0;
}
static int process_switch_event(struct perf_tool *tool,
union perf_event *event,
struct perf_sample *sample,
struct machine *machine)
{
struct thread *thread;
struct perf_script *script = container_of(tool, struct perf_script, tool);
struct perf_session *session = script->session;
struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
if (perf_event__process_switch(tool, event, sample, machine) < 0)
return -1;
thread = machine__findnew_thread(machine, sample->pid,
sample->tid);
if (thread == NULL) {
pr_debug("problem processing SWITCH event, skipping it.\n");
return -1;
}
print_sample_start(sample, thread, evsel);
perf_event__fprintf(event, stdout);
thread__put(thread);
return 0;
}
static void sig_handler(int sig __maybe_unused)
{
session_done = 1;
@ -834,6 +861,8 @@ static int __cmd_script(struct perf_script *script)
script->tool.mmap = process_mmap_event;
script->tool.mmap2 = process_mmap2_event;
}
if (script->show_switch_events)
script->tool.context_switch = process_switch_event;
ret = perf_session__process_events(script->session);
@ -1618,6 +1647,8 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
"Show the fork/comm/exit events"),
OPT_BOOLEAN('\0', "show-mmap-events", &script.show_mmap_events,
"Show the mmap events"),
OPT_BOOLEAN('\0', "show-switch-events", &script.show_switch_events,
"Show context switch events (if recorded)"),
OPT_BOOLEAN('f', "force", &file.force, "don't complain, do it"),
OPT_CALLBACK_OPTARG(0, "itrace", &itrace_synth_opts, NULL, "opts",
"Instruction Tracing options",