From f835224b306eff3ede9bcf156939dba2dc8e9d98 Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Sun, 17 May 2009 11:08:41 +0200
Subject: [PATCH] --- yaml --- r: 147475 b: refs/heads/master c:
 33b2fb303fe7f6b08bbb32f708e67b96eaa94a7a h: refs/heads/master i:   147473:
 ac0874b980596346afaf87baa76c714fb7654afa   147471:
 8a612005bac63b448426f15ca5ecb9988c7e3423 v: v3

---
 [refs]                      |  2 +-
 trunk/kernel/exit.c         | 19 +++++++------------
 trunk/kernel/perf_counter.c |  2 ++
 3 files changed, 10 insertions(+), 13 deletions(-)

diff --git a/[refs] b/[refs]
index e2e87dacc1a2..e9ab8e9df4c0 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: b68f1d2e7aa21029d73c7d453a8046e95d351740
+refs/heads/master: 33b2fb303fe7f6b08bbb32f708e67b96eaa94a7a
diff --git a/trunk/kernel/exit.c b/trunk/kernel/exit.c
index 73affd35e76d..f9dfedd94af0 100644
--- a/trunk/kernel/exit.c
+++ b/trunk/kernel/exit.c
@@ -178,12 +178,6 @@ void release_task(struct task_struct * p)
 
 	proc_flush_task(p);
 
-	/*
-	 * Flush inherited counters to the parent - before the parent
-	 * gets woken up by child-exit notifications.
-	 */
-	perf_counter_exit_task(p);
-
 	write_lock_irq(&tasklist_lock);
 	tracehook_finish_release_task(p);
 	__exit_signal(p);
@@ -985,6 +979,13 @@ NORET_TYPE void do_exit(long code)
 		module_put(tsk->binfmt->module);
 
 	proc_exit_connector(tsk);
+
+	/*
+	 * Flush inherited counters to the parent - before the parent
+	 * gets woken up by child-exit notifications.
+	 */
+	perf_counter_exit_task(tsk);
+
 	exit_notify(tsk, group_dead);
 #ifdef CONFIG_NUMA
 	mpol_put(tsk->mempolicy);
@@ -1257,12 +1258,6 @@ static int wait_task_zombie(struct task_struct *p, int options,
 	 */
 	read_unlock(&tasklist_lock);
 
-	/*
-	 * Flush inherited counters to the parent - before the parent
-	 * gets woken up by child-exit notifications.
-	 */
-	perf_counter_exit_task(p);
-
 	retval = ru ? getrusage(p, RUSAGE_BOTH, ru) : 0;
 	status = (p->signal->flags & SIGNAL_GROUP_EXIT)
 		? p->signal->group_exit_code : p->exit_code;
diff --git a/trunk/kernel/perf_counter.c b/trunk/kernel/perf_counter.c
index 59a926d04baf..7af16d1c480f 100644
--- a/trunk/kernel/perf_counter.c
+++ b/trunk/kernel/perf_counter.c
@@ -3299,6 +3299,8 @@ void perf_counter_exit_task(struct task_struct *child)
 	struct perf_counter *child_counter, *tmp;
 	struct perf_counter_context *child_ctx;
 
+	WARN_ON_ONCE(child != current);
+
 	child_ctx = &child->perf_counter_ctx;
 
 	if (likely(!child_ctx->nr_counters))