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authorLinus Torvalds <torvalds@linux-foundation.org>2008-06-30 08:57:43 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-06-30 08:57:43 -0700
commit70c85057e0bde35eb56352a293ecb5d1641a0334 (patch)
tree5344336d5c9caccf236e1f87b822543f69685b6c
parente6100f23375c0c71ce595d04551fa6553b611918 (diff)
parentd7ee56059b335e27c3c6db34f7efe5a705d65b1c (diff)
downloadconfigs-70c85057e0bde35eb56352a293ecb5d1641a0334.tar.gz
Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: debugobjects: fix lockdep warning
-rw-r--r--lib/debugobjects.c15
1 files changed, 6 insertions, 9 deletions
diff --git a/lib/debugobjects.c b/lib/debugobjects.c
index a76a5e122ae..85b18d79be8 100644
--- a/lib/debugobjects.c
+++ b/lib/debugobjects.c
@@ -68,6 +68,7 @@ static int fill_pool(void)
{
gfp_t gfp = GFP_ATOMIC | __GFP_NORETRY | __GFP_NOWARN;
struct debug_obj *new;
+ unsigned long flags;
if (likely(obj_pool_free >= ODEBUG_POOL_MIN_LEVEL))
return obj_pool_free;
@@ -81,10 +82,10 @@ static int fill_pool(void)
if (!new)
return obj_pool_free;
- spin_lock(&pool_lock);
+ spin_lock_irqsave(&pool_lock, flags);
hlist_add_head(&new->node, &obj_pool);
obj_pool_free++;
- spin_unlock(&pool_lock);
+ spin_unlock_irqrestore(&pool_lock, flags);
}
return obj_pool_free;
}
@@ -110,16 +111,13 @@ static struct debug_obj *lookup_object(void *addr, struct debug_bucket *b)
}
/*
- * Allocate a new object. If the pool is empty and no refill possible,
- * switch off the debugger.
+ * Allocate a new object. If the pool is empty, switch off the debugger.
*/
static struct debug_obj *
alloc_object(void *addr, struct debug_bucket *b, struct debug_obj_descr *descr)
{
struct debug_obj *obj = NULL;
- int retry = 0;
-repeat:
spin_lock(&pool_lock);
if (obj_pool.first) {
obj = hlist_entry(obj_pool.first, typeof(*obj), node);
@@ -141,9 +139,6 @@ repeat:
}
spin_unlock(&pool_lock);
- if (fill_pool() && !obj && !retry++)
- goto repeat;
-
return obj;
}
@@ -261,6 +256,8 @@ __debug_object_init(void *addr, struct debug_obj_descr *descr, int onstack)
struct debug_obj *obj;
unsigned long flags;
+ fill_pool();
+
db = get_bucket((unsigned long) addr);
spin_lock_irqsave(&db->lock, flags);