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Commit c0d5f32c authored by Chris Wilson's avatar Chris Wilson
Browse files

drm/i915: Set guilty-flag on fence after detecting a hang 



The struct dma_fence carries a status field exposed to userspace by
sync_file. This is inspected after the fence is signaled and can convey
whether or not the request completed successfully, or in our case if we
detected a hang during the request (signaled via -EIO in
SYNC_IOC_FILE_INFO).

v2: Mark all cancelled requests as failed.

Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: default avatarTvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170110172246.27297-2-chris@chris-wilson.co.uk
parent 2edc6e0d

drivers/gpu/drm/i915/i915_gem.c

+2 −0
Original line number Diff line number Diff line
@@ -2626,6 +2626,8 @@ static void reset_request(struct drm_i915_gem_request *request) 
		head = 0;

	}

	memset(vaddr + head, 0, request->postfix - head);



	dma_fence_set_error(&request->fence, -EIO);

}



void i915_gem_reset_prepare(struct drm_i915_private *dev_priv)