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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/display/amdgpu_dm/amdgpu_dm.c
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@@ -1658,7 +1658,7 @@ static int dm_suspend(void *handle)
struct amdgpu_display_manager *dm = &adev->dm;
int ret = 0;
if (adev->in_gpu_reset) {
if (amdgpu_in_reset(adev)) {
mutex_lock(&dm->dc_lock);
dm->cached_dc_state = dc_copy_state(dm->dc->current_state);
@@ -1844,7 +1844,7 @@ static int dm_resume(void *handle)
struct dc_state *dc_state;
int i, r, j;
if (adev->in_gpu_reset) {
if (amdgpu_in_reset(adev)) {
dc_state = dm->cached_dc_state;
r = dm_dmub_hw_init(adev);