[PATCH] lockdep: annotate hrtimer base locks

Teach special (recursive) 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>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index 8d3dc29ef41a..617304ce67db 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -782,8 +782,10 @@ static void __devinit init_hrtimers_cpu(int cpu)
         struct hrtimer_base *base = per_cpu(hrtimer_bases, cpu);
         int i;
 
-        for (i = 0; i < MAX_HRTIMER_BASES; i++, base++)
+        for (i = 0; i < MAX_HRTIMER_BASES; i++, base++) {
                 spin_lock_init(&base->lock);
+                lockdep_set_class(&base->lock, &base->lock_key);
+        }
 }
 
 #ifdef CONFIG_HOTPLUG_CPU