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: Chris Wilson <[email protected]> Cc: Tvrtko Ursulin <[email protected]> Cc: Mika Kuoppala <[email protected]> Reviewed-by: Tvrtko Ursulin <[email protected]> --- drivers/gpu/drm/i915/i915_gem.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index fb2433175a3d..324a49813668 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -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) -- 2.11.0 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
