diff options
| author | Christoph Hellwig <hch@lst.de> | 2018-12-06 13:39:32 -0800 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2018-12-13 21:06:18 +0100 |
| commit | 356da6d0cde3323236977fce54c1f9612a742036 (patch) | |
| tree | 87ad8176833266fbaa038780d67aebcc490d0d64 /include/linux/dma-direct.h | |
| parent | 190d4e5916a2d70a11009022b968fca948fb5dc7 (diff) | |
dma-mapping: bypass indirect calls for dma-direct
Avoid expensive indirect calls in the fast path DMA mapping
operations by directly calling the dma_direct_* ops if we are using
the directly mapped DMA operations.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Tested-by: Jesper Dangaard Brouer <brouer@redhat.com>
Tested-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'include/linux/dma-direct.h')
| -rw-r--r-- | include/linux/dma-direct.h | 17 |
1 files changed, 0 insertions, 17 deletions
diff --git a/include/linux/dma-direct.h b/include/linux/dma-direct.h index 3b0a3ea3876d..b7338702592a 100644 --- a/include/linux/dma-direct.h +++ b/include/linux/dma-direct.h @@ -60,22 +60,5 @@ void dma_direct_free_pages(struct device *dev, size_t size, void *cpu_addr, struct page *__dma_direct_alloc_pages(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs); void __dma_direct_free_pages(struct device *dev, size_t size, struct page *page); -dma_addr_t dma_direct_map_page(struct device *dev, struct page *page, - unsigned long offset, size_t size, enum dma_data_direction dir, - unsigned long attrs); -void dma_direct_unmap_page(struct device *dev, dma_addr_t addr, - size_t size, enum dma_data_direction dir, unsigned long attrs); -int dma_direct_map_sg(struct device *dev, struct scatterlist *sgl, int nents, - enum dma_data_direction dir, unsigned long attrs); -void dma_direct_unmap_sg(struct device *dev, struct scatterlist *sgl, - int nents, enum dma_data_direction dir, unsigned long attrs); -void dma_direct_sync_single_for_device(struct device *dev, - dma_addr_t addr, size_t size, enum dma_data_direction dir); -void dma_direct_sync_sg_for_device(struct device *dev, - struct scatterlist *sgl, int nents, enum dma_data_direction dir); -void dma_direct_sync_single_for_cpu(struct device *dev, - dma_addr_t addr, size_t size, enum dma_data_direction dir); -void dma_direct_sync_sg_for_cpu(struct device *dev, - struct scatterlist *sgl, int nents, enum dma_data_direction dir); int dma_direct_supported(struct device *dev, u64 mask); #endif /* _LINUX_DMA_DIRECT_H */ |