Mark Yao 3841912481 dma-buf: add release callback support
This patch is required by system on RK3368 SoCs.

Since its system used ion and drm drivers together, one dma-buf
may used by two devices, if one device deattached buffer, then
the other one need to map sg again, that takes time several ms.

The patch fix it by set buffer release operation in a list, and
do release after final dma_buf_put.

Change-Id: Ibfb4ffe3d97fae0a27f20032fdfbc3cc561aa375
Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
2020-02-27 14:46:53 +08:00
2019-02-10 00:33:21 +08:00
2020-02-02 20:22:38 +00:00
2019-08-06 20:08:18 +02:00
2019-02-10 00:33:21 +08:00
2019-02-10 00:33:21 +08:00
2019-08-29 19:45:37 +08:00
2019-08-29 19:45:37 +08:00
2019-10-17 15:33:07 -07:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.
Description
No description provided
Readme 7.9 GiB
Languages
C 97.7%
Assembly 1.6%
Makefile 0.3%
Perl 0.1%