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OpenCloudOS-Kernel
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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
This commit is contained in:
Linus Torvalds 2008-06-30 08:57:43 -07:00
parent e6100f2337 d7ee56059b
commit 70c85057e0
1 changed files with 6 additions and 9 deletions
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15
lib/debugobjects.c
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@ -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);