Commit 30327acf authored Apr 30, 2008 by Thomas Gleixner Committed by Linus Torvalds Apr 30, 2008

slab: add a flag to prevent debug_free checks on a kmem_cache

This is a preperatory patch for the debugobjects infrastructure.  The flag
prevents debug_free checks on kmem_caches.  This is necessary to avoid
resursive calls into a debug mechanism which uses a kmem_cache itself.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 145980a0

include/linux/slab.h

+7 −0

Original line number	Diff line number	Diff line
		@@ -29,6 +29,13 @@
		#define SLAB_MEM_SPREAD 0x00100000UL /* Spread some memory over cpuset */
		#define SLAB_TRACE 0x00200000UL /* Trace allocations and frees */

		/* Flag to prevent checks on free */
		#ifdef CONFIG_DEBUG_OBJECTS
		# define SLAB_DEBUG_OBJECTS 0x00400000UL
		#else
		# define SLAB_DEBUG_OBJECTS 0x00000000UL
		#endif

		/* The following flags affect the page allocator grouping pages by mobility */
		#define SLAB_RECLAIM_ACCOUNT 0x00020000UL /* Objects are reclaimable */
		#define SLAB_TEMPORARY SLAB_RECLAIM_ACCOUNT /* Objects are short-lived */