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[PATCH] lockdep ifdef fix

With

	CONFIG_SMP=y
	CONFIG_PREEMPT=y
	CONFIG_LOCKDEP=y
	CONFIG_DEBUG_LOCK_ALLOC=y
	# CONFIG_PROVE_LOCKING is not set

spin_unlock_irqrestore() goes through lockdep but spin_lock_irqsave() doesn't.
Apparently, bad things happen.

Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Jarek Poplawski 18 years ago
parent
c336923b66
commit
fc47e7b592
1 changed files with 1 additions and 1 deletions
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  1. 1 1
      kernel/spinlock.c

+ 1 - 1
kernel/spinlock.c
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@@ -72,7 +72,7 @@ EXPORT_SYMBOL(_write_trylock);
 
  * not re-enabled during lock-acquire (which the preempt-spin-ops do):
 
  * not re-enabled during lock-acquire (which the preempt-spin-ops do):
 
  */
 
  */
 
 #if !defined(CONFIG_PREEMPT) || !defined(CONFIG_SMP) || \
 
 #if !defined(CONFIG_PREEMPT) || !defined(CONFIG_SMP) || \
 
-	defined(CONFIG_PROVE_LOCKING)
 
+	defined(CONFIG_DEBUG_LOCK_ALLOC)
 
 
 
 void __lockfunc _read_lock(rwlock_t *lock)
 
 void __lockfunc _read_lock(rwlock_t *lock)
 
 {
 
 {