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dma-debug: add add checking for map/unmap_sg

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Impact: add debug callbacks for dma_{un}map_sg

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Joerg Roedel
2009-01-09 14:19:54 +01:00
parent f62bc980e6
commit 972aa45cea
2 changed files with 89 additions and 0 deletions
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16
include/linux/dma-debug.h
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@@ -23,6 +23,7 @@
#include <linux/types.h>
struct device;
struct scatterlist;
#ifdef CONFIG_DMA_API_DEBUG
@@ -36,6 +37,11 @@ extern void debug_dma_map_page(struct device *dev, struct page *page,
extern void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
size_t size, int direction, bool map_single);
extern void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
int nents, int mapped_ents, int direction);
extern void debug_dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
int nelems, int dir);
#else /* CONFIG_DMA_API_DEBUG */
@@ -56,6 +62,16 @@ static inline void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
{
}
static inline void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
int nents, int mapped_ents, int direction)
{
}
static inline void debug_dma_unmap_sg(struct device *dev,
struct scatterlist *sglist,
int nelems, int dir)
{
}
#endif /* CONFIG_DMA_API_DEBUG */