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

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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>
This commit is contained in:
Thomas Gleixner 2008-04-30 00:54:59 -07:00 committed by Linus Torvalds
parent 145980a0b0
commit 30327acf78
1 changed files with 7 additions and 0 deletions
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7
include/linux/slab.h
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@ -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 */