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Date: Tue, 17 Nov 2020 10:19:33 -0800 From: Minchan Kim <minchan@...nel.org> To: Andrew Morton <akpm@...ux-foundation.org> Cc: LKML <linux-kernel@...r.kernel.org>, linux-mm <linux-mm@...ck.org>, hyesoo.yu@...sung.com, willy@...radead.org, david@...hat.com, iamjoonsoo.kim@....com, vbabka@...e.cz, surenb@...gle.com, pullip.cho@...sung.com, joaodias@...gle.com, hridya@...gle.com, sumit.semwal@...aro.org, john.stultz@...aro.org, Brian.Starkey@....com, linux-media@...r.kernel.org, devicetree@...r.kernel.org, robh@...nel.org, christian.koenig@....com, linaro-mm-sig@...ts.linaro.org, Minchan Kim <minchan@...nel.org> Subject: [PATCH 2/4] dma-buf: add export symbol for dma-heap From: Hyesoo Yu <hyesoo.yu@...sung.com> The heaps could be added as module, so some functions should be exported to register dma-heaps. And dma-heap of module can use cma area to allocate and free. However the function related cma is not exported now. Let's export them for next patches. Signed-off-by: Hyesoo Yu <hyesoo.yu@...sung.com> Signed-off-by: Minchan Kim <minchan@...nel.org> --- drivers/dma-buf/dma-heap.c | 2 ++ mm/cma.c | 3 +++ 2 files changed, 5 insertions(+) diff --git a/drivers/dma-buf/dma-heap.c b/drivers/dma-buf/dma-heap.c index afd22c9dbdcf..cc6339cbca09 100644 --- a/drivers/dma-buf/dma-heap.c +++ b/drivers/dma-buf/dma-heap.c @@ -189,6 +189,7 @@ void *dma_heap_get_drvdata(struct dma_heap *heap) { return heap->priv; } +EXPORT_SYMBOL_GPL(dma_heap_get_drvdata); struct dma_heap *dma_heap_add(const struct dma_heap_export_info *exp_info) { @@ -272,6 +273,7 @@ struct dma_heap *dma_heap_add(const struct dma_heap_export_info *exp_info) kfree(heap); return err_ret; } +EXPORT_SYMBOL_GPL(dma_heap_add); static char *dma_heap_devnode(struct device *dev, umode_t *mode) { diff --git a/mm/cma.c b/mm/cma.c index 7c11ec2dc04c..87834e2966fa 100644 --- a/mm/cma.c +++ b/mm/cma.c @@ -54,6 +54,7 @@ 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) @@ -498,6 +499,7 @@ struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align, pr_debug("%s(): returned %p\n", __func__, page); return page; } +EXPORT_SYMBOL_GPL(cma_alloc); /* * cma_alloc_bulk() - allocate high order bulk pages from contiguous area with @@ -641,6 +643,7 @@ bool cma_release(struct cma *cma, const struct page *pages, unsigned int count) return true; } +EXPORT_SYMBOL_GPL(cma_release); int cma_for_each_area(int (*it)(struct cma *cma, void *data), void *data) { -- 2.29.2.299.gdc1121823c-goog
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