From: Minchan Kim <minchan@kernel.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
hyesoo.yu@samsung.com, willy@infradead.org, david@redhat.com,
iamjoonsoo.kim@lge.com, vbabka@suse.cz, surenb@google.com,
pullip.cho@samsung.com, joaodias@google.com, hridya@google.com,
sumit.semwal@linaro.org, john.stultz@linaro.org,
Brian.Starkey@arm.com, linux-media@vger.kernel.org,
devicetree@vger.kernel.org, robh@kernel.org,
christian.koenig@amd.com, linaro-mm-sig@lists.linaro.org,
Minchan Kim <minchan@kernel.org>
Subject: [PATCH 2/4] dma-buf: add export symbol for dma-heap
Date: Tue, 17 Nov 2020 10:19:33 -0800 [thread overview]
Message-ID: <20201117181935.3613581-3-minchan@kernel.org> (raw)
In-Reply-To: <20201117181935.3613581-1-minchan@kernel.org>
From: Hyesoo Yu <hyesoo.yu@samsung.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@samsung.com>
Signed-off-by: Minchan Kim <minchan@kernel.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
next prev parent reply other threads:[~2020-11-17 18:20 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-17 18:19 [PATCH 0/4] Chunk Heap Support on DMA-HEAP Minchan Kim
2020-11-17 18:19 ` [PATCH 1/4] mm: introduce cma_alloc_bulk API Minchan Kim
2020-11-23 14:15 ` David Hildenbrand
2020-11-25 20:12 ` Minchan Kim
2020-11-17 18:19 ` Minchan Kim [this message]
2020-11-18 5:18 ` [PATCH 2/4] dma-buf: add export symbol for dma-heap John Stultz
2020-11-17 18:19 ` [PATCH 3/4] dma-buf: heaps: add chunk heap to dmabuf heaps Minchan Kim
2020-11-17 18:19 ` [PATCH 4/4] dma-heap: Devicetree binding for chunk heap Minchan Kim
2020-11-18 3:00 ` John Stultz
2020-11-19 1:14 ` Hyesoo Yu
2020-11-19 3:19 ` John Stultz
2020-11-19 6:30 ` Hyesoo Yu
2020-12-09 23:53 ` Minchan Kim
2020-12-10 8:15 ` John Stultz
2020-12-10 16:06 ` Minchan Kim
2020-12-10 22:40 ` John Stultz
2020-12-10 23:30 ` Minchan Kim
[not found] ` <CGME20201118090020epcas2p3244a130a7b02a42127213a0b99f90291@epcas2p3.samsung.com>
[not found] ` <20201118090013.434-1-hdanton@sina.com>
2020-11-19 1:16 ` [PATCH 3/4] dma-buf: heaps: add chunk heap to dmabuf heaps Hyesoo Yu
2020-12-08 16:56 ` [PATCH 0/4] Chunk Heap Support on DMA-HEAP Nicolas Dufresne
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