diff options
| author |   Jiri Olsa <jolsa@kernel.org> | 2018-01-07 17:03:53 +0100 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-01-10 12:00:39 -0300 |
| commit | 3d7c27b6dbca4c90e7d921b45c2240e7c3cb92a2 (patch) | |
| tree | ecb6ee74ee84e5fa1e720f1994f6fc223014c345 /tools/perf/builtin-script.c | |
| parent | perf script: Add support to display sample misc field (diff) | |
| download | wireguard-linux-3d7c27b6dbca4c90e7d921b45c2240e7c3cb92a2.tar.xz wireguard-linux-3d7c27b6dbca4c90e7d921b45c2240e7c3cb92a2.zip | |
perf script: Add support to display lost events
Adding option to display lost events:
$ perf script --show-lost-events ...
mplayer 13810 [002] 468011.402396: 100 cycles:ppp: ff..
mplayer 13810 [002] 468011.402396: PERF_RECORD_LOST lost 3880
mplayer 13810 [002] 468011.402397: 100 cycles:ppp: ff..
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20180107160356.28203-10-jolsa@kernel.org
[ Use PRIu64 when printing u64 values, fixing the build in some arches ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-script.c')
| -rw-r--r-- | tools/perf/builtin-script.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index bb603495cf4a..c1cce474c0f1 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -1489,6 +1489,7 @@ struct perf_script { bool show_mmap_events; bool show_switch_events; bool show_namespace_events; + bool show_lost_events; bool allocated; bool per_event_dump; struct cpu_map *cpus; @@ -2080,6 +2081,29 @@ static int process_switch_event(struct perf_tool *tool, return 0; } +static int +process_lost_event(struct perf_tool *tool, + union perf_event *event, + struct perf_sample *sample, + struct machine *machine) +{ + 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); + struct thread *thread; + + thread = machine__findnew_thread(machine, sample->pid, + sample->tid); + if (thread == NULL) + return -1; + + perf_sample__fprintf_start(sample, thread, evsel, + PERF_RECORD_LOST, stdout); + perf_event__fprintf(event, stdout); + thread__put(thread); + return 0; +} + static void sig_handler(int sig __maybe_unused) { session_done = 1; @@ -2174,6 +2198,8 @@ static int __cmd_script(struct perf_script *script) script->tool.context_switch = process_switch_event; if (script->show_namespace_events) script->tool.namespaces = process_namespaces_event; + if (script->show_lost_events) + script->tool.lost = process_lost_event; if (perf_script__setup_per_event_dump(script)) { pr_err("Couldn't create the per event dump files\n"); @@ -3110,6 +3136,8 @@ int cmd_script(int argc, const char **argv) "Show context switch events (if recorded)"), OPT_BOOLEAN('\0', "show-namespace-events", &script.show_namespace_events, "Show namespace events (if recorded)"), + OPT_BOOLEAN('\0', "show-lost-events", &script.show_lost_events, + "Show lost events (if recorded)"), OPT_BOOLEAN('\0', "per-event-dump", &script.per_event_dump, "Dump trace output to files named by the monitored events"), OPT_BOOLEAN('f', "force", &symbol_conf.force, "don't complain, do it"), |