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8b5690d5c9
In order to create a CMA heap instance for each CMA region found in the system, we need to register each of these instances. While it would appear trivial, the CMA regions are created super early in the kernel boot process, before most of the subsystems are initialized. Thus, we can't just create an exported function to create a heap from the CMA region being initialized. What we can do however is create a two-step process, where we collect all the CMA regions into an array early on, and then when we initialize the heaps we iterate over that array and create the heaps from the CMA regions we collected. Reviewed-by: T.J. Mercier <tjmercier@google.com> Signed-off-by: Maxime Ripard <mripard@kernel.org> Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org> Link: https://lore.kernel.org/r/20251013-dma-buf-ecc-heap-v8-2-04ce150ea3d9@kernel.org
17 lines
337 B
C
17 lines
337 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef DMA_BUF_HEAP_CMA_H_
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#define DMA_BUF_HEAP_CMA_H_
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struct cma;
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#ifdef CONFIG_DMABUF_HEAPS_CMA
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int dma_heap_cma_register_heap(struct cma *cma);
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#else
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static inline int dma_heap_cma_register_heap(struct cma *cma)
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{
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return 0;
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}
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#endif // CONFIG_DMABUF_HEAPS_CMA
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#endif // DMA_BUF_HEAP_CMA_H_
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