diff options
| author | Dennis Li <Dennis.Li@amd.com> | 2021-03-10 12:20:45 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-04-09 23:34:53 +0300 |
| commit | 56b53c0b5aa5de49747351b2ad323fd36089eb52 (patch) | |
| tree | 142d0d64ff22005bc80e515fc57a9e2371bb92f5 /drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | |
| parent | c103b850721e4a79ff9578f131888129c37a4679 (diff) | |
| download | linux-56b53c0b5aa5de49747351b2ad323fd36089eb52.tar.xz | |
drm/amdgpu: add codes to capture invalid hardware access when recovery
When recovery thread has begun GPU reset, there should be not other
threads to access hardware, otherwise system randomly hang.
v2 (chk): rewritten from scratch, use trylock and lockdep instead of
hand wiring the logic.
v3: add in_irq check
v4: change to check in_task
Signed-off-by: Dennis Li <Dennis.Li@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c index 689addb1520d..f63f66a0c63f 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c @@ -705,7 +705,7 @@ uint32_t amdgpu_kiq_rreg(struct amdgpu_device *adev, uint32_t reg) struct amdgpu_kiq *kiq = &adev->gfx.kiq; struct amdgpu_ring *ring = &kiq->ring; - if (adev->in_pci_err_recovery) + if (amdgpu_device_skip_hw_access(adev)) return 0; BUG_ON(!ring->funcs->emit_rreg); @@ -772,7 +772,7 @@ void amdgpu_kiq_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v) BUG_ON(!ring->funcs->emit_wreg); - if (adev->in_pci_err_recovery) + if (amdgpu_device_skip_hw_access(adev)) return; spin_lock_irqsave(&kiq->ring_lock, flags); |