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mm: cma: Export cma_alloc(), cma_release() and cma_get_name()

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The CMA dma-buf heap uses cma_alloc() and cma_release() to allocate and
free, respectively, its CMA buffers, and cma_get_name() to get the name
of the heap instance it's going to create.

However, these functions are not exported. Since we want to turn the CMA
heap into a module, let's export them both.

Reviewed-by: T.J. Mercier <tjmercier@google.com>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
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-v4-5-e18fda504419@kernel.org
This commit is contained in:
Maxime Ripard
2026-03-31 12:00:14 +02:00
committed by Marek Szyprowski
parent 6207948f38
commit 7e72a8f8bb
1 changed files with 3 additions and 0 deletions
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3
mm/cma.c
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@@ -52,6 +52,7 @@ const char *cma_get_name(const struct cma *cma)
{
return cma->name;
}
EXPORT_SYMBOL_GPL(cma_get_name);
static unsigned long cma_bitmap_aligned_mask(const struct cma *cma,
unsigned int align_order)
@@ -951,6 +952,7 @@ struct page *cma_alloc(struct cma *cma, unsigned long count,
return page;
}
EXPORT_SYMBOL_GPL(cma_alloc);
static struct cma_memrange *find_cma_memrange(struct cma *cma,
const struct page *pages, unsigned long count)
@@ -1027,6 +1029,7 @@ bool cma_release(struct cma *cma, const struct page *pages,
return true;
}
EXPORT_SYMBOL_GPL(cma_release);
bool cma_release_frozen(struct cma *cma, const struct page *pages,
unsigned long count)