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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 /drivers/base | |
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 'drivers/base')
-rw-r--r-- | drivers/base/dma-buf.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/base/dma-buf.c b/drivers/base/dma-buf.c index 2a7cb0df176b..d89102a29f65 100644 --- a/drivers/base/dma-buf.c +++ b/drivers/base/dma-buf.c @@ -77,22 +77,24 @@ static inline int is_dma_buf_file(struct file *file) } /** - * dma_buf_export - Creates a new dma_buf, and associates an anon file + * dma_buf_export_named - Creates a new dma_buf, and associates an anon file * with this buffer, so it can be exported. * Also connect the allocator specific data and ops to the buffer. + * Additionally, provide a name string for exporter; useful in debugging. * * @priv: [in] Attach private data of allocator to this buffer * @ops: [in] Attach allocator-defined dma buf ops to the new buffer. * @size: [in] Size of the buffer * @flags: [in] mode flags for the file. + * @exp_name: [in] name of the exporting module - useful for debugging. * * Returns, on success, a newly created dma_buf object, which wraps the * supplied private data and operations for dma_buf_ops. On either missing * ops, or error in allocating struct dma_buf, will return negative error. * */ -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 *exp_name) { struct dma_buf *dmabuf; struct file *file; @@ -114,6 +116,7 @@ struct dma_buf *dma_buf_export(void *priv, const struct dma_buf_ops *ops, dmabuf->priv = priv; dmabuf->ops = ops; dmabuf->size = size; + dmabuf->exp_name = exp_name; file = anon_inode_getfile("dmabuf", &dma_buf_fops, dmabuf, flags); @@ -124,7 +127,7 @@ struct dma_buf *dma_buf_export(void *priv, const struct dma_buf_ops *ops, return dmabuf; } -EXPORT_SYMBOL_GPL(dma_buf_export); +EXPORT_SYMBOL_GPL(dma_buf_export_named); /** |