xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/radeon: rework recursive gpu reset handling

Browse Source 
Instead of all this humpy pumpy with recursive
mutex (which also fixes only halve of the problem)
move the actual gpu reset out of the fence code,
return -EDEADLK and then reset the gpu in the
calling ioctl function.

v2: Split removal of radeon_mutex into separate patch.
    Return -EAGAIN if reset is successful.

Signed-off-by: Christian König <deathsimple@vodafone.de>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Christian König
2012-05-02 15:11:19 +02:00
committed by Dave Airlie
parent 8f676c4c6f
commit 6c6f478370
4 changed files with 32 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/gpu/drm/radeon/radeon_fence.c
View File

@@ -244,6 +244,8 @@ int radeon_fence_wait(struct radeon_fence *fence, bool intr)
/* change sequence value on all rings, so nobody else things there is a lockup */
for (i = 0; i < RADEON_NUM_RINGS; ++i)
rdev->fence_drv[i].last_seq -= 0x10000;
rdev->fence_drv[fence->ring].last_activity = jiffies;
write_unlock_irqrestore(&rdev->fence_lock, irq_flags);
if (radeon_ring_is_lockup(rdev, fence->ring, &rdev->ring[fence->ring])) {
@@ -254,13 +256,7 @@ int radeon_fence_wait(struct radeon_fence *fence, bool intr)
/* mark the ring as not ready any more */
rdev->ring[fence->ring].ready = false;
r = radeon_gpu_reset(rdev);
if (r)
return r;
write_lock_irqsave(&rdev->fence_lock, irq_flags);
rdev->fence_drv[fence->ring].last_activity = jiffies;
write_unlock_irqrestore(&rdev->fence_lock, irq_flags);
return -EDEADLK;
}
}
}