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

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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: yuzhoujian <yuzhoujian@didichuxing.com>
Suggested-by: Jiri 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: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2017-10-30 13:11:15 -03:00
parent d688d0376c
commit 642ee1c6df
1 changed files with 69 additions and 8 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

77
tools/perf/builtin-script.c
View file

@ -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 @@ static int perf_script__fopen_per_event_dump(struct perf_script *script)
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);