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drm/amdgpu: change reset lock from mutex to rw_semaphore

Browse source 
clients don't need reset-lock for synchronization when no
GPU recovery.

v2:
change to return the return value of down_read_killable.

v3:
if GPU recovery begin, VF ignore FLR notification.

Reviewed-by: Monk Liu <monk.liu@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dennis Li <Dennis.Li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Dennis Li 2020-08-20 10:06:32 +08:00 • committed by Alex Deucher
parent 66b8a9c0a7
commit 6049db43d6
5 changed files with 32 additions and 35 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu.h
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@ -951,7 +951,7 @@ struct amdgpu_device {
atomic_t in_gpu_reset;
enum pp_mp1_state mp1_state;
struct mutex lock_reset;
struct rw_semaphore reset_sem;
struct amdgpu_doorbell_index doorbell_index;
struct mutex notifier_lock;