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authorMing Lei <tom.leiming@gmail.com>2009-07-16 15:44:29 +0200
committerPeter Zijlstra <a.p.zijlstra@chello.nl>2009-07-24 10:52:03 +0200
commit12f3dfd022d7e616757a94f0538d3d525d806a16 (patch)
tree22221bcfa6edcc47094bd87862eb9cc5402a5799 /kernel/lockdep_internals.h
parent4dd861d6467007681991d8ec079d928db2018cbb (diff)
downloadlinux-12f3dfd022d7e616757a94f0538d3d525d806a16.tar.bz2
lockdep: Add statistics info for max bfs queue depth
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>
Diffstat (limited to 'kernel/lockdep_internals.h')
-rw-r--r--kernel/lockdep_internals.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/lockdep_internals.h b/kernel/lockdep_internals.h
index b115aaa0bf35..6baa8807efdd 100644
--- a/kernel/lockdep_internals.h
+++ b/kernel/lockdep_internals.h
@@ -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);
}