---

yaml --- r: 4269 b: refs/heads/master c: 5bbcfd9 h: refs/heads/master i: 4267: e76750d v: v3
git-mirror · Jul 8, 2005 · ba9b08f · ba9b08f
1 parent dbabead
commit ba9b08f
Show file tree

Hide file tree

Showing 2 changed files with 8 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a4014d8f61a6a136d22422cf8aa978e6495dbad9
+refs/heads/master: 5bbcfd9000887c0da7d57cc7b3ac869fc0dd5aa9
diff --git a/trunk/kernel/sched.c b/trunk/kernel/sched.c
@@ -3877,6 +3877,13 @@ asmlinkage long sys_sched_yield(void)
 
 static inline void __cond_resched(void)
 {
+	/*
+	 * The BKS might be reacquired before we have dropped
+	 * PREEMPT_ACTIVE, which could trigger a second
+	 * cond_resched() call.
+	 */
+	if (unlikely(preempt_count()))
+		return;
 	do {
 		add_preempt_count(PREEMPT_ACTIVE);
 		schedule();