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author | Sumit Semwal <sumit.semwal@linaro.org> | 2013-03-22 18:22:16 +0530 |
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committer | Sumit Semwal <sumit.semwal@linaro.org> | 2013-05-01 16:35:36 +0530 |
commit | 78df969550e7187f4dcd70b737217dcbc8e9a06a (patch) | |
tree | a10524a478ce83555904ce27363bd68140f031bc /include/linux/dma-buf.h | |
parent | 5f56886521d6ddd3648777fae44d82382dd8c87f (diff) | |
download | linux-stable-78df969550e7187f4dcd70b737217dcbc8e9a06a.tar.gz linux-stable-78df969550e7187f4dcd70b737217dcbc8e9a06a.tar.bz2 linux-stable-78df969550e7187f4dcd70b737217dcbc8e9a06a.zip |
dma-buf: replace dma_buf_export() with dma_buf_export_named()
For debugging purposes, it is useful to have a name-string added
while exporting buffers. Hence, dma_buf_export() is replaced with
dma_buf_export_named(), which additionally takes 'exp_name' as a
parameter.
For backward compatibility, and for lazy exporters who don't wish to
name themselves, a #define dma_buf_export() is also made available,
which adds a __FILE__ instead of 'exp_name'.
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
[Thanks for the idea!]
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Diffstat (limited to 'include/linux/dma-buf.h')
-rw-r--r-- | include/linux/dma-buf.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h index 9978b614a1aa..6f55c0424f12 100644 --- a/include/linux/dma-buf.h +++ b/include/linux/dma-buf.h @@ -112,6 +112,7 @@ struct dma_buf_ops { * @file: file pointer used for sharing buffers across, and for refcounting. * @attachments: list of dma_buf_attachment that denotes all devices attached. * @ops: dma_buf_ops associated with this buffer object. + * @exp_name: name of the exporter; useful for debugging. * @priv: exporter specific private data for this buffer object. */ struct dma_buf { @@ -123,6 +124,7 @@ struct dma_buf { struct mutex lock; unsigned vmapping_counter; void *vmap_ptr; + const char *exp_name; void *priv; }; @@ -162,8 +164,13 @@ struct dma_buf_attachment *dma_buf_attach(struct dma_buf *dmabuf, struct device *dev); void dma_buf_detach(struct dma_buf *dmabuf, struct dma_buf_attachment *dmabuf_attach); -struct dma_buf *dma_buf_export(void *priv, const struct dma_buf_ops *ops, - size_t size, int flags); + +struct dma_buf *dma_buf_export_named(void *priv, const struct dma_buf_ops *ops, + size_t size, int flags, const char *); + +#define dma_buf_export(priv, ops, size, flags) \ + dma_buf_export_named(priv, ops, size, flags, __FILE__) + int dma_buf_fd(struct dma_buf *dmabuf, int flags); struct dma_buf *dma_buf_get(int fd); void dma_buf_put(struct dma_buf *dmabuf); |