---

yaml
---
r: 158325
b: refs/heads/master
c: e4aafea
h: refs/heads/master
i:
  158323: 7fd1349
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: e09758fae8ccde97e026c704319eaa18d488dc86
+refs/heads/master: e4aafea2d4bde8b44d6500c4ee7195bbfc51269e

trunk/include/linux/kernel.h

@@ -125,7 +125,7 @@ extern int _cond_resched(void);
 #endif
 
 #ifdef CONFIG_DEBUG_SPINLOCK_SLEEP
-  void __might_sleep(char *file, int line);
+  void __might_sleep(char *file, int line, int preempt_offset);
 /**
  * might_sleep - annotation for functions that can sleep
  *
@@ -137,9 +137,9 @@ extern int _cond_resched(void);
  * supposed to.
  */
 # define might_sleep() \
-	do { __might_sleep(__FILE__, __LINE__); might_resched(); } while (0)
+	do { __might_sleep(__FILE__, __LINE__, 0); might_resched(); } while (0)
 #else
-  static inline void __might_sleep(char *file, int line) { }
+  static inline void __might_sleep(char *file, int line, int preempt_offset) { }
 # define might_sleep() do { might_resched(); } while (0)
 #endif
 

trunk/kernel/sched.c

@@ -6610,7 +6610,7 @@ static inline int should_resched(void)
 
 static void __cond_resched(void)
 {
-	__might_sleep(__FILE__, __LINE__);
+	__might_sleep(__FILE__, __LINE__, 0);
 
 	add_preempt_count(PREEMPT_ACTIVE);
 	schedule();
@@ -9429,13 +9429,20 @@ void __init sched_init(void)
 }
 
 #ifdef CONFIG_DEBUG_SPINLOCK_SLEEP
-void __might_sleep(char *file, int line)
+static inline int preempt_count_equals(int preempt_offset)
+{
+	int nested = preempt_count() & ~PREEMPT_ACTIVE;
+
+	return (nested == PREEMPT_INATOMIC_BASE + preempt_offset);
+}
+
+void __might_sleep(char *file, int line, int preempt_offset)
 {
 #ifdef in_atomic
 	static unsigned long prev_jiffy;	/* ratelimiting */
 
-	if ((!in_atomic() && !irqs_disabled()) ||
-		    system_state != SYSTEM_RUNNING || oops_in_progress)
+	if ((preempt_count_equals(preempt_offset) && !irqs_disabled()) ||
+	    system_state != SYSTEM_RUNNING || oops_in_progress)
 		return;
 	if (time_before(jiffies, prev_jiffy + HZ) && prev_jiffy)
 		return;