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(parent: 2217b24) | patch
drm/amdgpu: restrict the hw sched jobs number to power of two
authorKevin Wang <kevin1.wang@amd.com>
Sun, 19 Jan 2020 09:20:43 +0000 (17:20 +0800)
committerAlex Deucher <alexander.deucher@amd.com>
Wed, 1 Jul 2020 05:59:23 +0000 (01:59 -0400)
commit5d5bd5e32e6e12ab8d844b4b1a1235eb7f00c668
tree3e0aeb5846435539815c364b48a98a991136e35atree | snapshot
parent2217b2499e6ba341f93cad99662ebdc62d3d400dcommit | diff
drm/amdgpu: restrict the hw sched jobs number to power of two

the module parameter sched_hw_submission is probably from user mode,
and the kernel need to check whether it is legal.

1. align hw sched jobs to power of 2 and set minimum number is 2.
2. use kernel api is_power_of_2() to simplify driver code.

Signed-off-by: Kevin Wang <kevin1.wang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c diff | blob | history
drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c diff | blob | history
Domain: System / Kernel;