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Commit b9d2317e authored by Joerg Roedel's avatar Joerg Roedel
Browse files

dma-debug: add checks for sync_single_* 



Impact: add debug callbacks for dma_sync_single_for_* functions

Signed-off-by: default avatarJoerg Roedel <joerg.roedel@amd.com>
parent 6bfd4498

include/linux/dma-debug.h

+20 −0
Original line number Diff line number Diff line
@@ -49,6 +49,14 @@ extern void debug_dma_alloc_coherent(struct device *dev, size_t size, 
extern void debug_dma_free_coherent(struct device *dev, size_t size,

				    void *virt, dma_addr_t addr);



extern void debug_dma_sync_single_for_cpu(struct device *dev,

					  dma_addr_t dma_handle, size_t size,

					  int direction);



extern void debug_dma_sync_single_for_device(struct device *dev,

					     dma_addr_t dma_handle,

					     size_t size, int direction);



#else /* CONFIG_DMA_API_DEBUG */



static inline void dma_debug_init(u32 num_entries)
@@ -89,6 +97,18 @@ static inline void debug_dma_free_coherent(struct device *dev, size_t size, 
{

}



static inline void debug_dma_sync_single_for_cpu(struct device *dev,

						 dma_addr_t dma_handle,

						 size_t size, int direction)

{

}



static inline void debug_dma_sync_single_for_device(struct device *dev,

						    dma_addr_t dma_handle,

						    size_t size, int direction)

{

}



#endif /* CONFIG_DMA_API_DEBUG */



#endif /* __DMA_DEBUG_H */

lib/dma-debug.c

+21 −0
Original line number Diff line number Diff line
@@ -737,3 +737,24 @@ void debug_dma_free_coherent(struct device *dev, size_t size, 
}

EXPORT_SYMBOL(debug_dma_free_coherent);



void debug_dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,

				   size_t size, int direction)

{

	if (unlikely(global_disable))

		return;



	check_sync(dev, dma_handle, size, 0, direction, true);

}

EXPORT_SYMBOL(debug_dma_sync_single_for_cpu);



void debug_dma_sync_single_for_device(struct device *dev,

				      dma_addr_t dma_handle, size_t size,

				      int direction)

{

	if (unlikely(global_disable))

		return;



	check_sync(dev, dma_handle, size, 0, direction, false);

}

EXPORT_SYMBOL(debug_dma_sync_single_for_device);