The CMA dma-buf heap uses cma_alloc() and cma_release() to allocate and free, respectively, its CMA buffers.
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 Signed-off-by: Maxime Ripard mripard@kernel.org --- mm/cma.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/mm/cma.c b/mm/cma.c index 94b5da468a7d719e5144d33b06bcc7619c0fbcc9..be142b473f3bd41b9c7d8ba4397f018f6993d962 100644 --- a/mm/cma.c +++ b/mm/cma.c @@ -949,10 +949,11 @@ 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 +1026,11 @@ 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;