Commit 102514ec authored by Daniel Vetter's avatar Daniel Vetter
Browse files

dma-buf: minor doc touch-ups 



Just some tiny edits:
- fix link to struct dma_fence
- give slightly more meaningful title - the polling here is about
  implicit fences, explicit fences (in sync_file or drm_syncobj) also
  have their own polling

v2: I misplaced the .rst include change corresponding to this patch.

Reviewed-by: default avatarThomas Hellstrom <thomas.hellstrom@intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200612070535.1778368-1-daniel.vetter@ffwll.ch
parent 7e06886b

Documentation/driver-api/dma-buf.rst

+3 −3
Original line number Diff line number Diff line
@@ -100,11 +100,11 @@ CPU Access to DMA Buffer Objects 
.. kernel-doc:: drivers/dma-buf/dma-buf.c

   :doc: cpu access



Fence Poll Support

~~~~~~~~~~~~~~~~~~

Implicit Fence Poll Support

~~~~~~~~~~~~~~~~~~~~~~~~~~~



.. kernel-doc:: drivers/dma-buf/dma-buf.c

   :doc: fence polling

   :doc: implicit fence polling



Kernel Functions and Structures Reference

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

drivers/dma-buf/dma-buf.c

+3 −3
Original line number Diff line number Diff line
@@ -161,11 +161,11 @@ static loff_t dma_buf_llseek(struct file *file, loff_t offset, int whence) 
}



/**

 * DOC: fence polling

 * DOC: implicit fence polling

 *

 * To support cross-device and cross-driver synchronization of buffer access

 * implicit fences (represented internally in the kernel with &struct fence) can

 * be attached to a &dma_buf. The glue for that and a few related things are

 * implicit fences (represented internally in the kernel with &struct dma_fence)

 * can be attached to a &dma_buf. The glue for that and a few related things are

 * provided in the &dma_resv structure.

 *

 * Userspace can query the state of these implicitly tracked fences using poll()

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