ded946f3f6
The software ring is created to support priority context while there is only one hardware queue for gfx. Every software ring has its fence driver and could be used as an ordinary ring for the GPU scheduler. Multiple software rings are bound to a real ring with the ring muxer. The packages committed on the software ring are copied to the real ring. v2: Use array to store software ring entry. v3: Remove unnecessary prints. v4: Remove amdgpu_ring_sw_init/fini functions, using gtt for sw ring buffer for later dma copy optimization. v5: Allocate ring entry dynamically in the muxer. v6: Update comments for the ring muxer. v7: Modify for function naming. v8: Combine software ring functions into amdgpu_ring_mux.c v9: Use kernel-doc comment on the get_rptr function. Cc: Christian Koenig <Christian.Koenig@amd.com> Cc: Luben Tuikov <Luben.Tuikov@amd.com> Cc: Andrey Grodzovsky <Andrey.Grodzovsky@amd.com> Cc: Michel Dänzer <michel@daenzer.net> Signed-off-by: Jiadong.Zhu <Jiadong.Zhu@amd.com> Acked-by: Huang Rui <ray.huang@amd.com> Acked-by: Luben Tuikov <luben.tuikov@amd.com> Acked-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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.
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.