libperf: Add PERF_RECORD_HEADER_FEATURE 'struct feature_event' to perf/event.h

Move the PERF_RECORD_HEADER_FEATURE event definition to libperf's
event.h.

In order to keep libperf simple, we switch 'u64/u32/u16/u8' types used
events to their generic '__u*' versions.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190828135717.7245-20-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-report.c

@@ -212,7 +212,7 @@ static int process_feature_event(struct perf_session *session,
 		return perf_event__process_feature(session, event);
 
 	if (event->feat.feat_id != HEADER_LAST_FEATURE) {
-		pr_err("failed: wrong feature ID: %" PRIu64 "\n",
+		pr_err("failed: wrong feature ID: %" PRI_lu64 "\n",
 		       event->feat.feat_id);
 		return -1;
 	}

tools/perf/lib/include/perf/event.h

@@ -312,4 +312,10 @@ struct time_conv_event {
 	__u64			 time_zero;
 };
 
+struct feature_event {
+	struct perf_event_header header;
+	__u64			 feat_id;
+	char			 data[];
+};
+
 #endif /* __LIBPERF_EVENT_H */

tools/perf/util/event.h

@@ -337,12 +337,6 @@ enum {
 	PERF_STAT_ROUND_TYPE__FINAL	= 1,
 };
 
-struct feature_event {
-	struct perf_event_header 	header;
-	u64				feat_id;
-	char				data[];
-};
-
 struct compressed_event {
 	struct perf_event_header	header;
 	char				data[];