Christoph Hellwig 5f3b133a23 dma-mapping: add a dma_need_unmap helper ... Add helper that allows a driver to skip calling dma_unmap_* if the DMA layer can guarantee that they are no-nops. Signed-off-by: Christoph Hellwig <hch@lst.de> Tested-by: Jens Axboe <axboe@kernel.dk> Reviewed-by: Luis Chamberlain <mcgrof@kernel.org> Signed-off-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>		2025-05-06 08:36:53 +02:00
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coherent.c	dma-mapping: save base/size instead of pointer to shared DMA pool	2024-11-14 10:45:09 +01:00
contiguous.c	mm/cma: drop CONFIG_CMA_DEBUG	2024-02-22 10:24:53 -08:00
debug.c	dma-debug: fix physical address calculation for struct dma_debug_entry	2024-11-28 10:19:16 +01:00
debug.h	dma-debug: teach add_dma_entry() about DMA_ATTR_SKIP_CPU_SYNC	2021-10-18 12:46:45 +02:00
direct.c	dma-mapping: move the PCI P2PDMA mapping helpers to pci-p2pdma.h	2025-05-06 08:36:53 +02:00
direct.h	swiotlb: reduce swiotlb pool lookups	2024-07-10 07:59:03 +02:00
dummy.c	dma-mapping: call ->unmap_page and ->unmap_sg unconditionally	2024-08-22 06:18:11 +02:00
Kconfig	dma-debug: remove DMA_API_DEBUG_SG	2024-10-29 08:53:37 +01:00
Makefile	dma-mapping: clearly mark DMA ops as an architecture feature	2024-09-04 07:08:51 +03:00
map_benchmark.c	dma-mapping: benchmark: Don't starve others when doing the test	2024-07-09 07:48:32 +02:00
mapping.c	dma-mapping: add a dma_need_unmap helper	2025-05-06 08:36:53 +02:00
ops_helpers.c	dma-mapping: use IOMMU DMA calls for common alloc/free page calls	2024-09-05 14:29:42 +03:00
pool.c	dma-mapping: replace zone_dma_bits by zone_dma_limit	2024-08-22 06:18:00 +02:00
remap.c	dma-mapping: use bit masking to check VM_DMA_COHERENT	2024-08-22 06:15:35 +02:00
swiotlb.c	dma-mapping: replace zone_dma_bits by zone_dma_limit	2024-08-22 06:18:00 +02:00