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Commit 948408ba authored by Joerg Roedel's avatar Joerg Roedel
Browse files

dma-debug: add checks for sync_single_range_* 



Impact: add debug callbacks for dma_sync_single_range_for_* functions

Signed-off-by: default avatarJoerg Roedel <joerg.roedel@amd.com>
parent b9d2317e

include/linux/dma-debug.h

+27 −0
Original line number Diff line number Diff line
@@ -57,6 +57,17 @@ extern void debug_dma_sync_single_for_device(struct device *dev, 
					     dma_addr_t dma_handle,

					     size_t size, int direction);



extern void debug_dma_sync_single_range_for_cpu(struct device *dev,

						dma_addr_t dma_handle,

						unsigned long offset,

						size_t size,

						int direction);



extern void debug_dma_sync_single_range_for_device(struct device *dev,

						   dma_addr_t dma_handle,

						   unsigned long offset,

						   size_t size, int direction);



#else /* CONFIG_DMA_API_DEBUG */



static inline void dma_debug_init(u32 num_entries)
@@ -109,6 +120,22 @@ static inline void debug_dma_sync_single_for_device(struct device *dev, 
{

}



static inline void debug_dma_sync_single_range_for_cpu(struct device *dev,

						       dma_addr_t dma_handle,

						       unsigned long offset,

						       size_t size,

						       int direction)

{

}



static inline void debug_dma_sync_single_range_for_device(struct device *dev,

							  dma_addr_t dma_handle,

							  unsigned long offset,

							  size_t size,

							  int direction)

{

}



#endif /* CONFIG_DMA_API_DEBUG */



#endif /* __DMA_DEBUG_H */

lib/dma-debug.c

+24 −0
Original line number Diff line number Diff line
@@ -758,3 +758,27 @@ void debug_dma_sync_single_for_device(struct device *dev, 
}

EXPORT_SYMBOL(debug_dma_sync_single_for_device);



void debug_dma_sync_single_range_for_cpu(struct device *dev,

					 dma_addr_t dma_handle,

					 unsigned long offset, size_t size,

					 int direction)

{

	if (unlikely(global_disable))

		return;



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

}

EXPORT_SYMBOL(debug_dma_sync_single_range_for_cpu);



void debug_dma_sync_single_range_for_device(struct device *dev,

					    dma_addr_t dma_handle,

					    unsigned long offset,

					    size_t size, int direction)

{

	if (unlikely(global_disable))

		return;



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

}

EXPORT_SYMBOL(debug_dma_sync_single_range_for_device);