perf stat: Rename perf_stat struct into perf_stat_evsel

It's used as the perf_evsel::priv data, so the name suits better. Also
we'll need the perf_stat name free for more generic struct.

Signed-off-by: Jiri Olsa <[e-mail]>
Tested-by: Kan Liang <[e-mail]>
Cc: David Ahern <[e-mail]>
Cc: Namhyung Kim <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Link: http://lkml.kernel.org/r/[e-mail]
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/builtin-stat.c

···
 
 static void print_noise(struct perf_evsel *evsel, double avg)
 {
-	struct perf_stat *ps;
+	struct perf_stat_evsel *ps;
 
 	if (run_count == 1)
 		return;
···
 static void print_counter_aggr(struct perf_evsel *counter, char *prefix)
 {
 	FILE *output = stat_config.output;
-	struct perf_stat *ps = counter->priv;
+	struct perf_stat_evsel *ps = counter->priv;
 	double avg = avg_stats(&ps->res_stats[0]);
 	int scaled = counter->counts->scaled;
 	double uval;

tools/perf/util/stat.c

···
 bool __perf_evsel_stat__is(struct perf_evsel *evsel,
 			   enum perf_stat_evsel_id id)
 {
-	struct perf_stat *ps = evsel->priv;
+	struct perf_stat_evsel *ps = evsel->priv;
 
 	return ps->id == id;
 }
···
 
 void perf_stat_evsel_id_init(struct perf_evsel *evsel)
 {
-	struct perf_stat *ps = evsel->priv;
+	struct perf_stat_evsel *ps = evsel->priv;
 	int i;
 
 	/* ps->id is 0 hence PERF_STAT_EVSEL_ID__NONE by default */
···
 void perf_evsel__reset_stat_priv(struct perf_evsel *evsel)
 {
 	int i;
-	struct perf_stat *ps = evsel->priv;
+	struct perf_stat_evsel *ps = evsel->priv;
 
 	for (i = 0; i < 3; i++)
 		init_stats(&ps->res_stats[i]);
···
 
 int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel)
 {
-	evsel->priv = zalloc(sizeof(struct perf_stat));
+	evsel->priv = zalloc(sizeof(struct perf_stat_evsel));
 	if (evsel->priv == NULL)
 		return -ENOMEM;
 	perf_evsel__reset_stat_priv(evsel);
···
 			      struct perf_evsel *counter)
 {
 	struct perf_counts_values *aggr = &counter->counts->aggr;
-	struct perf_stat *ps = counter->priv;
+	struct perf_stat_evsel *ps = counter->priv;
 	u64 *count = counter->counts->aggr.values;
 	int i, ret;
 

tools/perf/util/stat.h

···
 	PERF_STAT_EVSEL_ID__MAX,
 };
 
-struct perf_stat {
+struct perf_stat_evsel {
 	struct stats		res_stats[3];
 	enum perf_stat_evsel_id	id;
 };