[PATCH RFC tip/core/rcu 13/23] perf_event: __rcu annotations

[Paul E. McKenney]

From: Arnd Bergmann <arnd@xxxxxxxx>

Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 include/linux/perf_event.h |    6 +++---
 include/linux/sched.h      |    2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index c8e3754..48132eb 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -582,7 +582,7 @@ struct perf_event {
 	int				nr_siblings;
 	int				group_flags;
 	struct perf_event		*group_leader;
-	struct perf_event		*output;
+	struct perf_event __rcu		*output;
 	const struct pmu		*pmu;
 
 	enum perf_event_active_state	state;
@@ -643,7 +643,7 @@ struct perf_event {
 	/* mmap bits */
 	struct mutex			mmap_mutex;
 	atomic_t			mmap_count;
-	struct perf_mmap_data		*data;
+	struct perf_mmap_data __rcu	*data;
 
 	/* poll related */
 	wait_queue_head_t		waitq;
@@ -710,7 +710,7 @@ struct perf_event_context {
 	 * These fields let us detect when two contexts have both
 	 * been cloned (inherited) from a common ancestor.
 	 */
-	struct perf_event_context	*parent_ctx;
+	struct perf_event_context __rcu *parent_ctx;
 	u64				parent_gen;
 	u64				generation;
 	int				pin_count;
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 74b3125..34d28f7 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1442,7 +1442,7 @@ struct task_struct {
 	struct futex_pi_state *pi_state_cache;
 #endif
 #ifdef CONFIG_PERF_EVENTS
-	struct perf_event_context *perf_event_ctxp;
+	struct perf_event_context __rcu *perf_event_ctxp;
 	struct mutex perf_event_mutex;
 	struct list_head perf_event_list;
 #endif
-- 
1.7.0.6

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