perf script: Add option --show-switch-events (7c14898b) · Commits · 戴 / test

tools/perf/Documentation/perf-script.txt

+4 −0

Original line number	Diff line number	Diff line
		@@ -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.

tools/perf/builtin-script.c

+31 −0

Original line number	Diff line number	Diff line
		@@ -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",

Admin message