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| author | Christian König <christian.koenig@amd.com> | 2018-08-21 11:11:36 +0200 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-08-27 22:10:07 +0200 |
| commit | 7876fa4f55fda4a57348832f4a668279ed2b2fc4 (patch) | |
| tree | 3a2c8d39c5a86fff4f5f71906b26c4aa69be7a6c /drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c | |
| parent | drm/amdgpu: move PD/PT bos on LRU again (diff) | |
| download | linux-7876fa4f55fda4a57348832f4a668279ed2b2fc4.tar.xz linux-7876fa4f55fda4a57348832f4a668279ed2b2fc4.zip | |
drm/amdgpu: add ring soft recovery v4
Instead of hammering hard on the GPU try a soft recovery first.
v2: reorder code a bit
v3: increase timeout to 10ms, increment GPU reset counter
v4: squash in compile fix (Christian)
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c index 5dfd26be1eec..b70e85ec147d 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c @@ -383,6 +383,31 @@ void amdgpu_ring_emit_reg_write_reg_wait_helper(struct amdgpu_ring *ring, amdgpu_ring_emit_reg_wait(ring, reg1, mask, mask); } +/** + * amdgpu_ring_soft_recovery - try to soft recover a ring lockup + * + * @ring: ring to try the recovery on + * @vmid: VMID we try to get going again + * @fence: timedout fence + * + * Tries to get a ring proceeding again when it is stuck. + */ +bool amdgpu_ring_soft_recovery(struct amdgpu_ring *ring, unsigned int vmid, + struct dma_fence *fence) +{ + ktime_t deadline = ktime_add_us(ktime_get(), 10000); + + if (!ring->funcs->soft_recovery) + return false; + + atomic_inc(&ring->adev->gpu_reset_counter); + while (!dma_fence_is_signaled(fence) && + ktime_to_ns(ktime_sub(deadline, ktime_get())) > 0) + ring->funcs->soft_recovery(ring, vmid); + + return dma_fence_is_signaled(fence); +} + /* * Debugfs info */ |