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lockdep: Add statistics info for max bfs queue depth

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Add BFS statistics to the existing lockdep stats.

Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1246201486-7308-10-git-send-email-tom.leiming@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ming Lei
2009-07-16 15:44:29 +02:00
committed by Peter Zijlstra
parent 4dd861d646
commit 12f3dfd022
3 changed files with 9 additions and 2 deletions
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kernel/lockdep_internals.h
+2 -1
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@@ -138,6 +138,7 @@ extern atomic_t nr_find_usage_backwards_recursions;
#endif
extern unsigned int max_bfs_queue_depth;
extern unsigned long nr_list_entries;
extern struct lock_list list_entries[MAX_LOCKDEP_ENTRIES];
extern unsigned long bfs_accessed[];
@@ -191,7 +192,7 @@ static inline int __cq_dequeue(struct circular_queue *cq, unsigned long *elem)
return 0;
}
static inline int __cq_get_elem_count(struct circular_queue *cq)
static inline unsigned int __cq_get_elem_count(struct circular_queue *cq)
{
return (cq->rear - cq->front)&(MAX_CIRCULAR_QUE_SIZE-1);
}