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drm/amdgpu: refine codes to avoid reentering GPU recovery

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if other threads have holden the reset lock, recovery will
fail to try_lock. Therefore we introduce atomic hive->in_reset
and adev->in_gpu_reset, to avoid reentering GPU recovery.

v2:
drop "? true : false" in the definition of amdgpu_in_reset

Reviewed-by: Hawking Zhang <Hawking.Zhang@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
2020-08-19 17:23:03 +08:00
committed by Alex Deucher
parent c9977dffcc
commit 53b3f8f40e
28 changed files with 127 additions and 122 deletions
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4
drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c
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@@ -271,7 +271,7 @@ static void xgpu_nv_mailbox_flr_work(struct work_struct *work)
*/
locked = mutex_trylock(&adev->lock_reset);
if (locked)
adev->in_gpu_reset = true;
atomic_set(&adev->in_gpu_reset, 1);
do {
if (xgpu_nv_mailbox_peek_msg(adev) == IDH_FLR_NOTIFICATION_CMPL)
@@ -283,7 +283,7 @@ static void xgpu_nv_mailbox_flr_work(struct work_struct *work)
flr_done:
if (locked) {
adev->in_gpu_reset = false;
atomic_set(&adev->in_gpu_reset, 0);
mutex_unlock(&adev->lock_reset);
}