drm/i915/guc: don't spinwait if the GuC's workqueue is full
Rather than wait to see whether more space becomes available in the GuC submission workqueue, we can just return -EAGAIN and let the caller try again in a little while. This gets rid of an uninterruptable sleep in the polling code :) We'll also add a counter to the GuC client statistics, to see how often we find the WQ full. v2: Flag the likely() code path (Tvtrko Ursulin). v4: Add/update comments about failure counters (Tvtrko Ursulin). Signed-off-by: NDave Gordon <david.s.gordon@intel.com> Reviewed-by: NTvrtko Ursulin <tvrtko.ursulin@intel.com> Signed-off-by: NTvrtko Ursulin <tvrtko.ursulin@intel.com>
Showing
想要评论请 注册 或 登录