3 commits

Author	SHA1	Message	Date
Baochen Qiang	7e2368a217	dma-debug: don't enforce dma mapping check on noncoherent allocations ... As discussed in [1], there is no need to enforce dma mapping check on noncoherent allocations, a simple test on the returned CPU address is good enough. Add a new pair of debug helpers and use them for noncoherent alloc/free to fix this issue. Fixes: efa70f2fdc ("dma-mapping: add a new dma_alloc_pages API") Link: https://lore.kernel.org/all/ff6c1fe6-820f-4e58-8395-df06aa91706c@oss.qualcomm.com # 1 Signed-off-by: Baochen Qiang <baochen.qiang@oss.qualcomm.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Link: https://lore.kernel.org/r/20250828-dma-debug-fix-noncoherent-dma-check-v1-1-76e9be0dd7fc@oss.qualcomm.com	2025-09-02 10:18:16 +02:00
Hamza Mahfooz	c2bbf9d1e9	dma-debug: teach add_dma_entry() about DMA_ATTR_SKIP_CPU_SYNC ... Mapping something twice should be possible as long as, DMA_ATTR_SKIP_CPU_SYNC is passed to the strictly speaking second relevant mapping operation (that attempts to map the same thing). So, don't issue a warning if the specified condition is met in add_dma_entry(). Signed-off-by: Hamza Mahfooz <someguy@effective-light.com> Signed-off-by: Christoph Hellwig <hch@lst.de>	2021-10-18 12:46:45 +02:00
Christoph Hellwig	a1fd09e8e6	dma-mapping: move dma-debug.h to kernel/dma/ ... Most of dma-debug.h is not required by anything outside of kernel/dma. Move the four declarations needed by dma-mappin.h or dma-ops providers into dma-mapping.h and dma-map-ops.h, and move the remainder of the file to kernel/dma/debug.h. Signed-off-by: Christoph Hellwig <hch@lst.de>	2020-10-06 07:07:05 +02:00

Renamed from include/linux/dma-debug.h (Browse further)