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Commit 3fe0344f authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'kmemleak' of git://linux-arm.org/linux-2.6 

* 'kmemleak' of git://linux-arm.org/linux-2.6:
  kmemleak: Fix some typos in comments
  kmemleak: Rename kmemleak_panic to kmemleak_stop
  kmemleak: Only use GFP_KERNEL|GFP_ATOMIC for the internal allocations
parents c30938d5 2030117d

mm/kmemleak.c

+15 −12
Original line number Diff line number Diff line
@@ -109,6 +109,9 @@ 


#define BYTES_PER_POINTER	sizeof(void *)



/* GFP bitmask for kmemleak internal allocations */

#define GFP_KMEMLEAK_MASK	(GFP_KERNEL | GFP_ATOMIC)



/* scanning area inside a memory block */

struct kmemleak_scan_area {

	struct hlist_node node;
@@ -199,9 +202,9 @@ static DEFINE_MUTEX(kmemleak_mutex); 
static int reported_leaks;



/*

 * Early object allocation/freeing logging. Kkmemleak is initialized after the

 * Early object allocation/freeing logging. Kmemleak is initialized after the

 * kernel allocator. However, both the kernel allocator and kmemleak may

 * allocate memory blocks which need to be tracked. Kkmemleak defines an

 * allocate memory blocks which need to be tracked. Kmemleak defines an

 * arbitrary buffer to hold the allocation/freeing information before it is

 * fully initialized.

 */
@@ -245,10 +248,10 @@ static void kmemleak_disable(void); 


/*

 * Macro invoked when a serious kmemleak condition occured and cannot be

 * recovered from. Kkmemleak will be disabled and further allocation/freeing

 * recovered from. Kmemleak will be disabled and further allocation/freeing

 * tracing no longer available.

 */

#define kmemleak_panic(x...)	do {	\

#define kmemleak_stop(x...)	do {	\

	kmemleak_warn(x);		\

	kmemleak_disable();		\

} while (0)
@@ -462,9 +465,9 @@ static void create_object(unsigned long ptr, size_t size, int min_count, 
	struct prio_tree_node *node;

	struct stack_trace trace;



	object = kmem_cache_alloc(object_cache, gfp & ~GFP_SLAB_BUG_MASK);

	object = kmem_cache_alloc(object_cache, gfp & GFP_KMEMLEAK_MASK);

	if (!object) {

		kmemleak_panic("kmemleak: Cannot allocate a kmemleak_object "

		kmemleak_stop("kmemleak: Cannot allocate a kmemleak_object "

			      "structure\n");

		return;

	}
@@ -524,7 +527,7 @@ static void create_object(unsigned long ptr, size_t size, int min_count, 
	if (node != &object->tree_node) {

		unsigned long flags;



		kmemleak_panic("kmemleak: Cannot insert 0x%lx into the object "

		kmemleak_stop("kmemleak: Cannot insert 0x%lx into the object "

			      "search tree (already existing)\n", ptr);

		object = lookup_object(ptr, 1);

		spin_lock_irqsave(&object->lock, flags);
@@ -636,7 +639,7 @@ static void add_scan_area(unsigned long ptr, unsigned long offset, 
		return;

	}



	area = kmem_cache_alloc(scan_area_cache, gfp & ~GFP_SLAB_BUG_MASK);

	area = kmem_cache_alloc(scan_area_cache, gfp & GFP_KMEMLEAK_MASK);

	if (!area) {

		kmemleak_warn("kmemleak: Cannot allocate a scan area\n");

		goto out;
@@ -696,7 +699,7 @@ static void log_early(int op_type, const void *ptr, size_t size, 
	struct early_log *log;



	if (crt_early_log >= ARRAY_SIZE(early_log)) {

		kmemleak_panic("kmemleak: Early log buffer exceeded\n");

		kmemleak_stop("kmemleak: Early log buffer exceeded\n");

		return;

	}
@@ -1404,7 +1407,7 @@ static int kmemleak_boot_config(char *str) 
early_param("kmemleak", kmemleak_boot_config);



/*

 * Kkmemleak initialization.

 * Kmemleak initialization.

 */

void __init kmemleak_init(void)

{