On 10/01/2017 10:27, Chris Wilson wrote:
Similarly to a normal reset, after we mark the GPU as wedged (completely
fubar and no more requests can be executed), set the error status on all
the in flight requests.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_gem.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 94ad9eb83a5c..0eeb0204848b 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2730,12 +2730,16 @@ void i915_gem_reset_finish(struct drm_i915_private *dev_priv)
static void nop_submit_request(struct drm_i915_gem_request *request)
{
+ dma_fence_set_error(&request->fence, -EIO);
i915_gem_request_submit(request);
intel_engine_init_global_seqno(request->engine, request->global_seqno);
}
static void i915_gem_cleanup_engine(struct intel_engine_cs *engine)
{
+ struct drm_i915_gem_request *request;
+ unsigned long flags;
+
/* We need to be sure that no thread is running the old callback as
* we install the nop handler (otherwise we would submit a request
* to hardware that will never complete). In order to prevent this
@@ -2744,6 +2748,12 @@ static void i915_gem_cleanup_engine(struct intel_engine_cs *engine)
*/
engine->submit_request = nop_submit_request;
+ /* Mark all executing requests as incomplete */
+ spin_lock_irqsave(&engine->timeline->lock, flags);
+ list_for_each_entry(request, &engine->timeline->requests, link)
+ dma_fence_set_error(&request->fence, -EIO);
+ spin_unlock_irqrestore(&engine->timeline->lock, flags);
+
/* Mark all pending requests as complete so that any concurrent
* (lockless) lookup doesn't try and wait upon the request as we
* reset it.
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Regards,
Tvrtko
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