p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

sync_file.txt: standardize document format 

Each text file under Documentation follows a different
format. Some doesn't even have titles!

Change its representation to follow the adopted standard,
using ReST markups for it to be parseable by Sphinx:
- Use markup for document title and authorship;
- Mark literal blocks;
- Use a numbered list for references.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.com>
Link: http://patchwork.freedesktop.org/patch/msgid/e781f61e582e7c7eb5de456608043aff9fe2b2b5.1495157082.git.mchehab@s-opensource.com
This commit is contained in:
Mauro Carvalho Chehab 2017-05-18 22:26:04 -03:00 committed by Gustavo Padovan
parent 7fcd075068
commit c16f291dee
1 changed files with 13 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
Documentation/sync_file.txt
View File

@ -1,8 +1,8 @@
Sync File API Guide
~~~~~~~~~~~~~~~~~~~
===================
Sync File API Guide
===================
Gustavo Padovan
<gustavo at padovan dot org>
:Author: Gustavo Padovan <gustavo at padovan dot org>
This document serves as a guide for device drivers writers on what the
sync_file API is, and how drivers can support it. Sync file is the carrier of
@ -46,16 +46,17 @@ Creating Sync Files
When a driver needs to send an out-fence userspace it creates a sync_file.
Interface:
Interface::
struct sync_file *sync_file_create(struct dma_fence *fence);
The caller pass the out-fence and gets back the sync_file. That is just the
first step, next it needs to install an fd on sync_file->file. So it gets an
fd:
fd::
fd = get_unused_fd_flags(O_CLOEXEC);
and installs it on sync_file->file:
and installs it on sync_file->file::
fd_install(fd, sync_file->file);
@ -71,7 +72,8 @@ When userspace needs to send an in-fence to the driver it passes file descriptor
of the Sync File to the kernel. The kernel can then retrieve the fences
from it.
Interface:
Interface::
struct dma_fence *sync_file_get_fence(int fd);
@ -79,5 +81,6 @@ The returned reference is owned by the caller and must be disposed of
afterwards using dma_fence_put(). In case of error, a NULL is returned instead.
References:
[1] struct sync_file in include/linux/sync_file.h
[2] All interfaces mentioned above defined in include/linux/sync_file.h
1. struct sync_file in include/linux/sync_file.h
2. All interfaces mentioned above defined in include/linux/sync_file.h