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Commit b6693005 authored by Catalin Marinas's avatar Catalin Marinas
Browse files

kmemleak: When the early log buffer is exceeded, report the actual number 



Just telling that the early log buffer has been exceeded doesn't mean
much. This patch moves the error printing to the kmemleak_init()
function and displays the actual calls to the kmemleak API during early
logging.

Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent 5f79020c

mm/kmemleak.c

+15 −6
Original line number Diff line number Diff line
@@ -797,9 +797,13 @@ static void __init log_early(int op_type, const void *ptr, size_t size, 
	unsigned long flags;

	struct early_log *log;



	if (atomic_read(&kmemleak_error)) {

		/* kmemleak stopped recording, just count the requests */

		crt_early_log++;

		return;

	}



	if (crt_early_log >= ARRAY_SIZE(early_log)) {

		pr_warning("Early log buffer exceeded, "

			   "please increase DEBUG_KMEMLEAK_EARLY_LOG_SIZE\n");

		kmemleak_disable();

		return;

	}
@@ -1634,7 +1638,6 @@ static void kmemleak_disable(void) 
		return;



	/* stop any memory operation tracing */

	atomic_set(&kmemleak_early_log, 0);

	atomic_set(&kmemleak_enabled, 0);



	/* check whether it is too early for a kernel thread */
@@ -1694,12 +1697,18 @@ void __init kmemleak_init(void) 
	scan_area_cache = KMEM_CACHE(kmemleak_scan_area, SLAB_NOLEAKTRACE);

	INIT_PRIO_TREE_ROOT(&object_tree_root);



	if (crt_early_log >= ARRAY_SIZE(early_log))

		pr_warning("Early log buffer exceeded (%d), please increase "

			   "DEBUG_KMEMLEAK_EARLY_LOG_SIZE\n", crt_early_log);



	/* the kernel is still in UP mode, so disabling the IRQs is enough */

	local_irq_save(flags);

	if (!atomic_read(&kmemleak_error)) {

		atomic_set(&kmemleak_enabled, 1);

	atomic_set(&kmemleak_early_log, 0);

	}

	if (atomic_read(&kmemleak_error)) {

		local_irq_restore(flags);

		return;

	} else

		atomic_set(&kmemleak_enabled, 1);

	local_irq_restore(flags);



	/*