Commit 642ee1c6 authored by Arnaldo Carvalho de Melo's avatar Arnaldo Carvalho de Melo
Browse files

perf script: Print information about per-event-dump files 



For a file generated by "perf sched record sleep 50":

  # perf script --per-event-dump
  [ perf script: Wrote 23.121 MB perf.data.sched:sched_switch.dump (206015 samples) ]
  [ perf script: Wrote 0.000 MB perf.data.sched:sched_stat_wait.dump (0 samples) ]
  [ perf script: Wrote 0.000 MB perf.data.sched:sched_stat_sleep.dump (0 samples) ]
  [ perf script: Wrote 0.000 MB perf.data.sched:sched_stat_iowait.dump (0 samples) ]
  [ perf script: Wrote 17.680 MB perf.data.sched:sched_stat_runtime.dump (129342 samples) ]
  [ perf script: Wrote 0.000 MB perf.data.sched:sched_process_fork.dump (24 samples) ]
  [ perf script: Wrote 11.328 MB perf.data.sched:sched_wakeup.dump (106770 samples) ]
  [ perf script: Wrote 0.000 MB perf.data.sched:sched_wakeup_new.dump (24 samples) ]
  [ perf script: Wrote 2.477 MB perf.data.sched:sched_migrate_task.dump (20434 samples) ]
  #

Similar to what is generated by 'perf record'.

Based-on-a-patch-by: default avataryuzhoujian <yuzhoujian@didichuxing.com>
Suggested-by: default avatarJiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1508921599-10832-3-git-send-email-yuzhoujian@didichuxing.com
Link: http://lkml.kernel.org/n/tip-xuketkkjuk2c0qz546ypd1u7@git.kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent d688d037

tools/perf/builtin-script.c

+69 −8
Original line number Diff line number Diff line
@@ -210,6 +210,51 @@ static struct { 
	},

};



struct perf_evsel_script {

       char *filename;

       FILE *fp;

       u64  samples;

};



static struct perf_evsel_script *perf_evsel_script__new(struct perf_evsel *evsel,

							struct perf_data_file *file)

{

	struct perf_evsel_script *es = malloc(sizeof(*es));



	if (es != NULL) {

		if (asprintf(&es->filename, "%s.%s.dump", file->path, perf_evsel__name(evsel)) < 0)

			goto out_free;

		es->fp = fopen(es->filename, "w");

		if (es->fp == NULL)

			goto out_free_filename;

		es->samples = 0;

	}



	return es;

out_free_filename:

	zfree(&es->filename);

out_free:

	free(es);

	return NULL;

}



static void perf_evsel_script__delete(struct perf_evsel_script *es)

{

	zfree(&es->filename);

	fclose(es->fp);

	es->fp = NULL;

	free(es);

}



static int perf_evsel_script__fprintf(struct perf_evsel_script *es, FILE *fp)

{

	struct stat st;



	fstat(fileno(es->fp), &st);

	return fprintf(fp, "[ perf script: Wrote %.3f MB %s (%" PRIu64 " samples) ]\n",

		       st.st_size / 1024.0 / 1024.0, es->filename, es->samples);

}



static inline int output_type(unsigned int type)

{

	switch (type) {
@@ -1439,11 +1484,14 @@ static void process_event(struct perf_script *script, 
	struct thread *thread = al->thread;

	struct perf_event_attr *attr = &evsel->attr;

	unsigned int type = output_type(attr->type);

	FILE *fp = evsel->priv;

	struct perf_evsel_script *es = evsel->priv;

	FILE *fp = es->fp;



	if (output[type].fields == 0)

		return;



	++es->samples;



	perf_sample__fprintf_start(sample, thread, evsel, fp);



	if (PRINT_FIELD(PERIOD))
@@ -1896,7 +1944,7 @@ static void perf_script__fclose_per_event_dump(struct perf_script *script) 
	evlist__for_each_entry(evlist, evsel) {

		if (!evsel->priv)

			break;

		fclose(evsel->priv);

		perf_evsel_script__delete(evsel->priv);

		evsel->priv = NULL;

	}

}
@@ -1906,10 +1954,7 @@ static int perf_script__fopen_per_event_dump(struct perf_script *script) 
	struct perf_evsel *evsel;



	evlist__for_each_entry(script->session->evlist, evsel) {

		char filename[PATH_MAX];

		snprintf(filename, sizeof(filename), "%s.%s.dump",

			 script->session->file->path, perf_evsel__name(evsel));

		evsel->priv = fopen(filename, "w");

		evsel->priv = perf_evsel_script__new(evsel, script->session->file);

		if (evsel->priv == NULL)

			goto out_err_fclose;

	}
@@ -1924,16 +1969,32 @@ out_err_fclose: 
static int perf_script__setup_per_event_dump(struct perf_script *script)

{

	struct perf_evsel *evsel;

	static struct perf_evsel_script es_stdout;



	if (script->per_event_dump)

		return perf_script__fopen_per_event_dump(script);



	es_stdout.fp = stdout;



	evlist__for_each_entry(script->session->evlist, evsel)

		evsel->priv = stdout;

		evsel->priv = &es_stdout;



	return 0;

}



static void perf_script__exit_per_event_dump_stats(struct perf_script *script)

{

	struct perf_evsel *evsel;



	evlist__for_each_entry(script->session->evlist, evsel) {

		struct perf_evsel_script *es = evsel->priv;



		perf_evsel_script__fprintf(es, stdout);

		perf_evsel_script__delete(es);

		evsel->priv = NULL;

	}

}



static int __cmd_script(struct perf_script *script)

{

	int ret;
@@ -1963,7 +2024,7 @@ static int __cmd_script(struct perf_script *script) 
	ret = perf_session__process_events(script->session);



	if (script->per_event_dump)

		perf_script__fclose_per_event_dump(script);

		perf_script__exit_per_event_dump_stats(script);



	if (debug_mode)

		pr_err("Misordered timestamps: %" PRIu64 "\n", nr_unordered);

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