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[patch 2/5] tasklet: use lock bitops for tasklet lock

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From: <npiggin@...>
To: <akpm@...>
Cc: <linux-kernel@...>
Subject: [patch 2/5] tasklet: use lock bitops for tasklet lock
Date: Wednesday, October 24, 2007 - 4:13 am

Signed-off-by: Nick Piggin <npiggin@suse.de>


---

 include/linux/interrupt.h |    5 ++---

 1 file changed, 2 insertions(+), 3 deletions(-)


Index: linux-2.6/include/linux/interrupt.h

===================================================================

--- linux-2.6.orig/include/linux/interrupt.h

+++ linux-2.6/include/linux/interrupt.h

@@ -321,13 +321,12 @@ enum

 #ifdef CONFIG_SMP

 static inline int tasklet_trylock(struct tasklet_struct *t)

 {

-	return !test_and_set_bit(TASKLET_STATE_RUN, &(t)->state);

+	return !test_and_set_bit_lock(TASKLET_STATE_RUN, &(t)->state);

 }


 static inline void tasklet_unlock(struct tasklet_struct *t)

 {

-	smp_mb__before_clear_bit();

-	clear_bit(TASKLET_STATE_RUN, &(t)->state);

+	clear_bit_unlock(TASKLET_STATE_RUN, &(t)->state);

 }


 static inline void tasklet_unlock_wait(struct tasklet_struct *t)


-- 


-
Previous thread: [PATCH] Define smp_call_function_mask() on uniprocessor builds by Avi Kivity on Wednesday, October 24, 2007 - 4:51 am. (3 messages)

Next thread: [patch 1/5] wait: use lock bitops for __wait_on_bit_lock by npiggin on Wednesday, October 24, 2007 - 4:13 am. (4 messages)