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Subject[patch 43/61] lock validator: special locking: completions
From: Ingo Molnar <mingo@elte.hu>

teach special (multi-initialized) locking code to the lock validator.
Has no effect on non-lockdep kernels.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
---
---
include/linux/completion.h | 6 +-----
kernel/sched.c | 8 ++++++++
2 files changed, 9 insertions(+), 5 deletions(-)

Index: linux/include/linux/completion.h
===================================================================
--- linux.orig/include/linux/completion.h
+++ linux/include/linux/completion.h
@@ -21,11 +21,7 @@ struct completion {
#define DECLARE_COMPLETION(work) \
struct completion work = COMPLETION_INITIALIZER(work)

-static inline void init_completion(struct completion *x)
-{
- x->done = 0;
- init_waitqueue_head(&x->wait);
-}
+extern void init_completion(struct completion *x);

extern void FASTCALL(wait_for_completion(struct completion *));
extern int FASTCALL(wait_for_completion_interruptible(struct completion *x));
Index: linux/kernel/sched.c
===================================================================
--- linux.orig/kernel/sched.c
+++ linux/kernel/sched.c
@@ -3569,6 +3569,14 @@ __wake_up_sync(wait_queue_head_t *q, uns
}
EXPORT_SYMBOL_GPL(__wake_up_sync); /* For internal use only */

+void init_completion(struct completion *x)
+{
+ x->done = 0;
+ __init_waitqueue_head(&x->wait);
+}
+
+EXPORT_SYMBOL(init_completion);
+
void fastcall complete(struct completion *x)
{
unsigned long flags;
-
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