diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2025-11-30 11:54:48 +0100 |
|---|---|---|
| committer | Linus Walleij <linusw@kernel.org> | 2026-01-08 08:52:29 +0100 |
| commit | d42d701e132905d69be3a7808f2ec86bdb4c48d8 (patch) | |
| tree | b33d3fa27701d5b9450893ad12fa9b5f82c30703 | |
| parent | 6a0b99e9fb45f403c3097a9047963d2dd5b0fab2 (diff) | |
dma-buf: heaps: Clear CMA pages with clear_page()
clear_page() translates into memset(*p, 0, PAGE_SIZE) on some
architectures, but on the major architectures it will call
an optimized assembly snippet so use this instead of open
coding a memset().
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Nirmoy Das <nirmoyd@nvidia.com>
Reviewed-by: T.J. Mercier <tjmercier@google.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
Link: https://patch.msgid.link/20251130-dma-buf-heap-clear-page-v1-1-a8dcea2a88ee@linaro.org
| -rw-r--r-- | drivers/dma-buf/heaps/cma_heap.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma-buf/heaps/cma_heap.c b/drivers/dma-buf/heaps/cma_heap.c index 42f88193eab9..49cc45fb42dd 100644 --- a/drivers/dma-buf/heaps/cma_heap.c +++ b/drivers/dma-buf/heaps/cma_heap.c @@ -331,7 +331,7 @@ static struct dma_buf *cma_heap_allocate(struct dma_heap *heap, while (nr_clear_pages > 0) { void *vaddr = kmap_local_page(page); - memset(vaddr, 0, PAGE_SIZE); + clear_page(vaddr); kunmap_local(vaddr); /* * Avoid wasting time zeroing memory if the process |