commit: 76903b96adbfbb38b049765add21e02e44c387a5 From: Jerome Glisse <[email protected]> Date: Mon, 17 Dec 2012 10:29:06 -0500 Subject: drm/radeon: don't leave fence blocked process on failed GPU reset MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit
Force all fence to signal if GPU reset failed so no process get stuck on waiting fence. Signed-off-by: Jerome Glisse <[email protected]> Reviewed-by: Christian König <[email protected]> Signed-off-by: Alex Deucher <[email protected]> Cc: [email protected] --- drivers/gpu/drm/radeon/radeon.h | 1 + drivers/gpu/drm/radeon/radeon_device.c | 1 + drivers/gpu/drm/radeon/radeon_fence.c | 19 +++++++++++++++++++ 3 files changed, 21 insertions(+), 0 deletions(-) diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index 5dc744d..aae7314 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -225,6 +225,7 @@ struct radeon_fence { int radeon_fence_driver_start_ring(struct radeon_device *rdev, int ring); int radeon_fence_driver_init(struct radeon_device *rdev); void radeon_fence_driver_fini(struct radeon_device *rdev); +void radeon_fence_driver_force_completion(struct radeon_device *rdev); int radeon_fence_emit(struct radeon_device *rdev, struct radeon_fence **fence, int ring); void radeon_fence_process(struct radeon_device *rdev, int ring); bool radeon_fence_signaled(struct radeon_fence *fence); diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c index 49b0659..e81d6ca 100644 --- a/drivers/gpu/drm/radeon/radeon_device.c +++ b/drivers/gpu/drm/radeon/radeon_device.c @@ -1358,6 +1358,7 @@ retry: } } } else { + radeon_fence_driver_force_completion(rdev); for (i = 0; i < RADEON_NUM_RINGS; ++i) { kfree(ring_data[i]); } diff --git a/drivers/gpu/drm/radeon/radeon_fence.c b/drivers/gpu/drm/radeon/radeon_fence.c index 410a975..a9b0fa5 100644 --- a/drivers/gpu/drm/radeon/radeon_fence.c +++ b/drivers/gpu/drm/radeon/radeon_fence.c @@ -868,6 +868,25 @@ void radeon_fence_driver_fini(struct radeon_device *rdev) mutex_unlock(&rdev->ring_lock); } +/** + * radeon_fence_driver_force_completion - force all fence waiter to complete + * + * @rdev: radeon device pointer + * + * In case of GPU reset failure make sure no process keep waiting on fence + * that will never complete. + */ +void radeon_fence_driver_force_completion(struct radeon_device *rdev) +{ + int ring; + + for (ring = 0; ring < RADEON_NUM_RINGS; ring++) { + if (!rdev->fence_drv[ring].initialized) + continue; + radeon_fence_write(rdev, rdev->fence_drv[ring].sync_seq[ring], ring); + } +} + /* * Fence debugfs -- 1.7.3.4 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
