diff options
| author | Maxime Ripard <mripard@kernel.org> | 2026-03-31 12:00:10 +0200 |
|---|---|---|
| committer | Marek Szyprowski <m.szyprowski@samsung.com> | 2026-03-31 13:27:20 +0200 |
| commit | 25bd73562941b04cfba1a278d8c84f2b1c69b8e9 (patch) | |
| tree | 3a02911ae2bdbbf0407f143c1622d5716c88f58f /include/linux/dma-buf/heaps | |
| parent | 6de23f81a5e08be8fbf5e8d7e9febc72a5b5f27f (diff) | |
dma: contiguous: Turn heap registration logic around
The CMA heap instantiation was initially developed by having the
contiguous DMA code call into the CMA heap to create a new instance
every time a reserved memory area is probed.
Turning the CMA heap into a module would create a dependency of the
kernel on a module, which doesn't work.
Let's turn the logic around and do the opposite: store all the reserved
memory CMA regions into the contiguous DMA code, and provide an iterator
for the heap to use when it probes.
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20260331-dma-buf-heaps-as-modules-v4-1-e18fda504419@kernel.org
Diffstat (limited to 'include/linux/dma-buf/heaps')
| -rw-r--r-- | include/linux/dma-buf/heaps/cma.h | 16 |
1 files changed, 0 insertions, 16 deletions
diff --git a/include/linux/dma-buf/heaps/cma.h b/include/linux/dma-buf/heaps/cma.h deleted file mode 100644 index e751479e21e7..000000000000 --- a/include/linux/dma-buf/heaps/cma.h +++ /dev/null @@ -1,16 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef DMA_BUF_HEAP_CMA_H_ -#define DMA_BUF_HEAP_CMA_H_ - -struct cma; - -#ifdef CONFIG_DMABUF_HEAPS_CMA -int dma_heap_cma_register_heap(struct cma *cma); -#else -static inline int dma_heap_cma_register_heap(struct cma *cma) -{ - return 0; -} -#endif // CONFIG_DMABUF_HEAPS_CMA - -#endif // DMA_BUF_HEAP_CMA_H_ |