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: Namhyung Kim <namhyung@kernel.org> Suggested-by: Frederic Weisbecker <fweisbec@gmail.com> Reviewed-by: David 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: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -206,6 +206,9 @@ OPTIONS
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--show-task-events
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--show-task-events
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Display task related events (e.g. FORK, COMM, EXIT).
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Display task related events (e.g. FORK, COMM, EXIT).
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--show-mmap-events
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Display mmap related events (e.g. MMAP, MMAP2).
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SEE ALSO
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SEE ALSO
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--------
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--------
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linkperf:perf-record[1], linkperf:perf-script-perl[1],
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linkperf:perf-record[1], linkperf:perf-script-perl[1],
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@ -573,6 +573,7 @@ struct perf_script {
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struct perf_tool tool;
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struct perf_tool tool;
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struct perf_session *session;
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struct perf_session *session;
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bool show_task_events;
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bool show_task_events;
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bool show_mmap_events;
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};
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};
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static int process_attr(struct perf_tool *tool, union perf_event *event,
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static int process_attr(struct perf_tool *tool, union perf_event *event,
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@ -698,6 +699,68 @@ static int process_exit_event(struct perf_tool *tool,
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return 0;
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return 0;
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}
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}
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static int process_mmap_event(struct perf_tool *tool,
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union perf_event *event,
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struct perf_sample *sample,
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struct machine *machine)
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{
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struct thread *thread;
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struct perf_script *script = container_of(tool, struct perf_script, tool);
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struct perf_session *session = script->session;
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struct perf_evsel *evsel = perf_evlist__first(session->evlist);
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if (perf_event__process_mmap(tool, event, sample, machine) < 0)
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return -1;
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thread = machine__findnew_thread(machine, event->mmap.pid, event->mmap.tid);
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if (thread == NULL) {
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pr_debug("problem processing MMAP event, skipping it.\n");
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return -1;
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}
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if (!evsel->attr.sample_id_all) {
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sample->cpu = 0;
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sample->time = 0;
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sample->tid = event->mmap.tid;
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sample->pid = event->mmap.pid;
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}
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print_sample_start(sample, thread, evsel);
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perf_event__fprintf(event, stdout);
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return 0;
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}
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static int process_mmap2_event(struct perf_tool *tool,
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union perf_event *event,
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struct perf_sample *sample,
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struct machine *machine)
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{
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struct thread *thread;
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struct perf_script *script = container_of(tool, struct perf_script, tool);
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struct perf_session *session = script->session;
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struct perf_evsel *evsel = perf_evlist__first(session->evlist);
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if (perf_event__process_mmap2(tool, event, sample, machine) < 0)
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return -1;
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thread = machine__findnew_thread(machine, event->mmap2.pid, event->mmap2.tid);
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if (thread == NULL) {
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pr_debug("problem processing MMAP2 event, skipping it.\n");
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return -1;
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}
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if (!evsel->attr.sample_id_all) {
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sample->cpu = 0;
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sample->time = 0;
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sample->tid = event->mmap2.tid;
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sample->pid = event->mmap2.pid;
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}
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print_sample_start(sample, thread, evsel);
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perf_event__fprintf(event, stdout);
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return 0;
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}
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static void sig_handler(int sig __maybe_unused)
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static void sig_handler(int sig __maybe_unused)
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{
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{
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session_done = 1;
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session_done = 1;
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@ -715,6 +778,10 @@ static int __cmd_script(struct perf_script *script)
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script->tool.fork = process_fork_event;
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script->tool.fork = process_fork_event;
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script->tool.exit = process_exit_event;
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script->tool.exit = process_exit_event;
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}
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}
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if (script->show_mmap_events) {
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script->tool.mmap = process_mmap_event;
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script->tool.mmap2 = process_mmap2_event;
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}
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ret = perf_session__process_events(script->session, &script->tool);
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ret = perf_session__process_events(script->session, &script->tool);
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@ -1480,6 +1547,8 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
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"Show the path of [kernel.kallsyms]"),
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"Show the path of [kernel.kallsyms]"),
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OPT_BOOLEAN('\0', "show-task-events", &script.show_task_events,
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OPT_BOOLEAN('\0', "show-task-events", &script.show_task_events,
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"Show the fork/comm/exit events"),
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"Show the fork/comm/exit events"),
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OPT_BOOLEAN('\0', "show-mmap-events", &script.show_mmap_events,
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"Show the mmap events"),
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OPT_END()
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OPT_END()
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};
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};
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const char * const script_usage[] = {
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const char * const script_usage[] = {
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