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fb4e66e115d4a75114bf602fbef0bf6314a00161
Imitate the behaviors of drm_gem_map_detach() and drm_gem_map_dma_buf(). Graphics performance of rk3399 device using ion without this modification, was quite poor. Change-Id: Ia0b8e2f3026a61ee4addee9c1715291886fa1c99 Signed-off-by: Zhen Chen <chenzhen@rock-chips.com>
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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.
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