perf session: Move total_unknown to perf_session->unknown events

As this is a session property, not belonging to perf_event_ops,
that can be shared by many perf_session instances.
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1261957026-15580-7-git-send-email-acme@infradead.org>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

tools/perf/util/session.c

@@ -66,6 +66,7 @@ struct perf_session *perf_session__new(const char *filename, int mode, bool forc
 	self->mmap_window = 32;
 	self->cwd = NULL;
 	self->cwdlen = 0;
+	self->unknown_events = 0;
 	map_groups__init(&self->kmaps);
 
 	if (perf_session__create_kernel_maps(self) < 0)
@@ -239,7 +240,7 @@ static int perf_session__process_event(struct perf_session *self,
 	case PERF_RECORD_UNTHROTTLE:
 		return ops->process_unthrottle_event(event, self);
 	default:
-		ops->total_unknown++;
+		self->unknown_events++;
 		return -1;
 	}
 }

tools/perf/util/session.h

@@ -20,6 +20,7 @@ struct perf_session {
 	struct thread		*last_match;
 	struct events_stats	events_stats;
 	unsigned long		event_total[PERF_RECORD_MAX];
+	unsigned long		unknown_events;
 	struct rb_root		hists;
 	u64			sample_type;
 	int			fd;
@@ -40,7 +41,6 @@ struct perf_event_ops {
 	event_op	process_read_event;
 	event_op	process_throttle_event;
 	event_op	process_unthrottle_event;
-	unsigned long	total_unknown;
 	bool		full_paths;
 };