aboutsummaryrefslogtreecommitdiff
path: root/arch
diff options
context:
space:
mode:
authorVegard Nossum <vegard.nossum@gmail.com>2008-07-20 10:44:54 +0200
committerVegard Nossum <vegard.nossum@gmail.com>2009-06-15 12:40:05 +0200
commitd7002857dee6e9a3ce1f78d23f37caba106b29c5 (patch)
tree64453eb81be8409937a6daf207442cf5021e3b5e /arch
parent2dff440525f8faba8836e9f05297b76f23b4af30 (diff)
kmemcheck: add DMA hooks
This patch hooks into the DMA API to prevent the reporting of the false positives that would otherwise be reported when memory is accessed that is also used directly by devices. [rebased for mainline inclusion] Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/include/asm/dma-mapping.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/include/asm/dma-mapping.h b/arch/x86/include/asm/dma-mapping.h
index f82fdc412c6..d57d0c1857b 100644
--- a/arch/x86/include/asm/dma-mapping.h
+++ b/arch/x86/include/asm/dma-mapping.h
@@ -6,6 +6,7 @@
* Documentation/DMA-API.txt for documentation.
*/
+#include <linux/kmemcheck.h>
#include <linux/scatterlist.h>
#include <linux/dma-debug.h>
#include <linux/dma-attrs.h>
@@ -60,6 +61,7 @@ dma_map_single(struct device *hwdev, void *ptr, size_t size,
dma_addr_t addr;
BUG_ON(!valid_dma_direction(dir));
+ kmemcheck_mark_initialized(ptr, size);
addr = ops->map_page(hwdev, virt_to_page(ptr),
(unsigned long)ptr & ~PAGE_MASK, size,
dir, NULL);