Commit ba1ddf42 authored by Namhyung Kim's avatar Namhyung Kim Committed by Arnaldo Carvalho de Melo
Browse files

perf script: Print mmap[2] events also 



If --show-mmap-events option is given, also print internal MMAP and
MMAP2 events.  It would be helpful for debugging.

  $ perf script --show-mmap-events
  ...
           sleep  9486 [009] 3350640.335531: PERF_RECORD_MMAP 9486/9486: [0x400000(0x6000) @ 0]: x /usr/bin/sleep
           sleep  9486 [009] 3350640.335542: PERF_RECORD_MMAP 9486/9486: [0x3153a00000(0x223000) @ 0]: x /usr/lib64/ld-2.17.so
           sleep  9486 [009] 3350640.335553: PERF_RECORD_MMAP 9486/9486: [0x7fff8b5fe000(0x2000) @ 0x7fff8b5fe000]: x [vdso]
           sleep  9486 [009] 3350640.335643: PERF_RECORD_MMAP 9486/9486: [0x3153e00000(0x3c0000) @ 0]: x /usr/lib64/libc-2.17.so

Signed-off-by: default avatarNamhyung Kim <namhyung@kernel.org>
Suggested-by: default avatarFrederic Weisbecker <fweisbec@gmail.com>
Reviewed-by: default avatarDavid Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1385456066-26592-1-git-send-email-namhyung@kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent ad7ebb9a

tools/perf/Documentation/perf-script.txt

+3 −0
Original line number Diff line number Diff line
@@ -206,6 +206,9 @@ OPTIONS 
--show-task-events

	Display task related events (e.g. FORK, COMM, EXIT).



--show-mmap-events

	Display mmap related events (e.g. MMAP, MMAP2).



SEE ALSO

--------

linkperf:perf-record[1], linkperf:perf-script-perl[1],

tools/perf/builtin-script.c

+69 −0
Original line number Diff line number Diff line
@@ -573,6 +573,7 @@ struct perf_script { 
	struct perf_tool	tool;

	struct perf_session	*session;

	bool			show_task_events;

	bool			show_mmap_events;

};



static int process_attr(struct perf_tool *tool, union perf_event *event,
@@ -698,6 +699,68 @@ static int process_exit_event(struct perf_tool *tool, 
	return 0;

}



static int process_mmap_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__first(session->evlist);



	if (perf_event__process_mmap(tool, event, sample, machine) < 0)

		return -1;



	thread = machine__findnew_thread(machine, event->mmap.pid, event->mmap.tid);

	if (thread == NULL) {

		pr_debug("problem processing MMAP event, skipping it.\n");

		return -1;

	}



	if (!evsel->attr.sample_id_all) {

		sample->cpu = 0;

		sample->time = 0;

		sample->tid = event->mmap.tid;

		sample->pid = event->mmap.pid;

	}

	print_sample_start(sample, thread, evsel);

	perf_event__fprintf(event, stdout);



	return 0;

}



static int process_mmap2_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__first(session->evlist);



	if (perf_event__process_mmap2(tool, event, sample, machine) < 0)

		return -1;



	thread = machine__findnew_thread(machine, event->mmap2.pid, event->mmap2.tid);

	if (thread == NULL) {

		pr_debug("problem processing MMAP2 event, skipping it.\n");

		return -1;

	}



	if (!evsel->attr.sample_id_all) {

		sample->cpu = 0;

		sample->time = 0;

		sample->tid = event->mmap2.tid;

		sample->pid = event->mmap2.pid;

	}

	print_sample_start(sample, thread, evsel);

	perf_event__fprintf(event, stdout);



	return 0;

}



static void sig_handler(int sig __maybe_unused)

{

	session_done = 1;
@@ -715,6 +778,10 @@ static int __cmd_script(struct perf_script *script) 
		script->tool.fork = process_fork_event;

		script->tool.exit = process_exit_event;

	}

	if (script->show_mmap_events) {

		script->tool.mmap = process_mmap_event;

		script->tool.mmap2 = process_mmap2_event;

	}



	ret = perf_session__process_events(script->session, &script->tool);
@@ -1480,6 +1547,8 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused) 
		    "Show the path of [kernel.kallsyms]"),

	OPT_BOOLEAN('\0', "show-task-events", &script.show_task_events,

		    "Show the fork/comm/exit events"),

	OPT_BOOLEAN('\0', "show-mmap-events", &script.show_mmap_events,

		    "Show the mmap events"),

	OPT_END()

	};

	const char * const script_usage[] = {

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