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perf stat: Introduce read_counters function 

Moving read counters logic into single read_counters function, which
will be called for both interval and overall processing legs.

The reason is to split reading and processing (following patches)
counters code, so we could read counters from other sources (like
perf.data) and process them in the same way as 'perf stat' command does.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1435310967-14570-15-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2015-06-26 11:29:19 +02:00 committed by Arnaldo Carvalho de Melo
parent f99f4719b8
commit 106a94a0f8
1 changed files with 23 additions and 26 deletions
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49
tools/perf/builtin-stat.c
View File

@ -323,27 +323,35 @@ static int read_counter(struct perf_evsel *counter)
return 0;
}
static void read_counters(bool close)
{
struct perf_evsel *counter;
struct perf_stat *ps;
evlist__for_each(evsel_list, counter) {
ps = counter->priv;
memset(ps->res_stats, 0, sizeof(ps->res_stats));
if (aggr_mode == AGGR_GLOBAL)
read_counter_aggr(counter);
else
read_counter(counter);
if (close) {
perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter),
thread_map__nr(evsel_list->threads));
}
}
}
static void print_interval(void)
{
static int num_print_interval;
struct perf_evsel *counter;
struct perf_stat *ps;
struct timespec ts, rs;
char prefix[64];
if (aggr_mode == AGGR_GLOBAL) {
evlist__for_each(evsel_list, counter) {
ps = counter->priv;
memset(ps->res_stats, 0, sizeof(ps->res_stats));
read_counter_aggr(counter);
}
} else {
evlist__for_each(evsel_list, counter) {
ps = counter->priv;
memset(ps->res_stats, 0, sizeof(ps->res_stats));
read_counter(counter);
}
}
read_counters(false);
clock_gettime(CLOCK_MONOTONIC, &ts);
diff_timespec(&rs, &ts, &ref_time);
@ -525,18 +533,7 @@ static int __run_perf_stat(int argc, const char **argv)
update_stats(&walltime_nsecs_stats, t1 - t0);
if (aggr_mode == AGGR_GLOBAL) {
evlist__for_each(evsel_list, counter) {
read_counter_aggr(counter);
perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter),
thread_map__nr(evsel_list->threads));
}
} else {
evlist__for_each(evsel_list, counter) {
read_counter(counter);
perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter), 1);
}
}
read_counters(true);
return WEXITSTATUS(status);
}