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authorNamhyung Kim <namhyung@kernel.org>2013-11-26 17:54:26 +0900
committerArnaldo Carvalho de Melo <acme@redhat.com>2013-11-27 14:58:38 -0300
commitba1ddf42f3c3af111d3adee277534f73c1ef6a9b (patch)
tree67899014c8dcb48278d0f1578f71b2ca439bf0b2 /tools
parentad7ebb9a48f59bad2714b64725653a73d78b686e (diff)
downloadop-kernel-dev-ba1ddf42f3c3af111d3adee277534f73c1ef6a9b.zip
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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>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/Documentation/perf-script.txt3
-rw-r--r--tools/perf/builtin-script.c69
2 files changed, 72 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt
index 67af9b7..cfdbb1e0 100644
--- a/tools/perf/Documentation/perf-script.txt
+++ b/tools/perf/Documentation/perf-script.txt
@@ -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],
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index e2b9aff..952dce9 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -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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