Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf: Call perf_cgroup_event_time() directly
  perf: Don't call release_callchain_buffers() if allocation fails
diff --git a/kernel/events/callchain.c b/kernel/events/callchain.c
index 057e24b..6581a04 100644
--- a/kernel/events/callchain.c
+++ b/kernel/events/callchain.c
@@ -115,8 +115,6 @@
 	}
 
 	err = alloc_callchain_buffers();
-	if (err)
-		release_callchain_buffers();
 exit:
 	mutex_unlock(&callchain_mutex);
 
diff --git a/kernel/events/core.c b/kernel/events/core.c
index a8f4ac0..32b48c8 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -815,7 +815,7 @@
 	 * here.
 	 */
 	if (is_cgroup_event(event))
-		run_end = perf_event_time(event);
+		run_end = perf_cgroup_event_time(event);
 	else if (ctx->is_active)
 		run_end = ctx->time;
 	else