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authorVegard Nossum <vegard.nossum@gmail.com>2008-11-25 18:55:53 +0300
committerVegard Nossum <vegard.nossum@gmail.com>2009-06-15 17:48:33 +0400
commitb1eeab67682a5e397aecf172046b3a8bd4808ae4 (patch)
treec357b6ac1945dc8beecc2f8c4d84660ad8d35aae /include/linux/gfp.h
parent9b5cab31897e9e89e36c0c2a89b16b93ff1a971a (diff)
downloadlinux-b1eeab67682a5e397aecf172046b3a8bd4808ae4.tar.xz
kmemcheck: add hooks for the page allocator
This adds support for tracking the initializedness of memory that was allocated with the page allocator. Highmem requests are not tracked. Cc: Dave Hansen <dave@linux.vnet.ibm.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> [build fix for !CONFIG_KMEMCHECK] Signed-off-by: Ingo Molnar <mingo@elte.hu> [rebased for mainline inclusion] Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
Diffstat (limited to 'include/linux/gfp.h')
-rw-r--r--include/linux/gfp.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index daeaa8fe1bbd..3885e7f75562 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -51,7 +51,12 @@ struct vm_area_struct;
#define __GFP_THISNODE ((__force gfp_t)0x40000u)/* No fallback, no policies */
#define __GFP_RECLAIMABLE ((__force gfp_t)0x80000u) /* Page is reclaimable */
#define __GFP_MOVABLE ((__force gfp_t)0x100000u) /* Page is movable */
+
+#ifdef CONFIG_KMEMCHECK
#define __GFP_NOTRACK ((__force gfp_t)0x200000u) /* Don't track with kmemcheck */
+#else
+#define __GFP_NOTRACK ((__force gfp_t)0)
+#endif
/*
* This may seem redundant, but it's a way of annotating false positives vs.