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 --- mm/cma.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/mm/cma.c b/mm/cma.c index 94b5da468a7d719e5144d33b06bcc7619c0fbcc9..550effb9c4e01cc488b5744fe61d55a5b70a6d6c 100644 --- a/mm/cma.c +++ b/mm/cma.c @@ -50,10 +50,11 @@ unsigned long cma_get_size(const struct cma *cma)
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) { if (align_order <= cma->order_per_bit) @@ -949,10 +950,11 @@ struct page *cma_alloc(struct cma *cma, unsigned long count, if (page) set_pages_refcounted(page, 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) { struct cma_memrange *cmr = NULL; @@ -1025,10 +1027,11 @@ bool cma_release(struct cma *cma, const struct page *pages,
__cma_release_frozen(cma, cmr, pages, count);
return true; } +EXPORT_SYMBOL_GPL(cma_release);
bool cma_release_frozen(struct cma *cma, const struct page *pages, unsigned long count) { struct cma_memrange *cmr;