From patchwork Wed Sep 19 15:08:51 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Wilson X-Patchwork-Id: 1477951 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by patchwork2.kernel.org (Postfix) with ESMTP id 98A37DF280 for ; Wed, 19 Sep 2012 15:10:51 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 70159A0908 for ; Wed, 19 Sep 2012 08:10:51 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from fireflyinternet.com (smtp.fireflyinternet.com [109.228.6.236]) by gabe.freedesktop.org (Postfix) with ESMTP id 64B17A08C6 for ; Wed, 19 Sep 2012 08:10:26 -0700 (PDT) X-Default-Received-SPF: pass (skip=forwardok (res=PASS)) x-ip-name=78.156.73.22; Received: from arrandale.alporthouse.com (unverified [78.156.73.22]) by fireflyinternet.com (Firefly Internet SMTP) with ESMTP id 122584718-1500050 for multiple; Wed, 19 Sep 2012 16:10:15 +0100 From: Chris Wilson To: intel-gfx@lists.freedesktop.org Date: Wed, 19 Sep 2012 16:08:51 +0100 Message-Id: <1348067331-6927-1-git-send-email-chris@chris-wilson.co.uk> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1348064232-6227-1-git-send-email-chris@chris-wilson.co.u> References: <1348064232-6227-1-git-send-email-chris@chris-wilson.co.u> X-Originating-IP: 78.156.73.22 Subject: [Intel-gfx] [PATCH] drm/i915: Wait upon the last request seqno, rather than a future seqno X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: intel-gfx-bounces+patchwork-intel-gfx=patchwork.kernel.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+patchwork-intel-gfx=patchwork.kernel.org@lists.freedesktop.org In commit 69c2fc891343cb5217c866d10709343cff190bdc Author: Chris Wilson Date: Fri Jul 20 12:41:03 2012 +0100 drm/i915: Remove the per-ring write list the explicit flush was removed from i915_ring_idle(). However, we continued to wait upon the next seqno which now did not correspond to any request (except for the unusual condition of a failure to queue a request after execbuffer) and so would wait indefinitely. Signed-off-by: Chris Wilson --- This time the complete patch, merging the forgotten partial commit. --- drivers/gpu/drm/i915/i915_gem.c | 23 +++++++++++++++++++++-- 1 file changed, 21 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 242f58b..39de523 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -2593,10 +2593,29 @@ i915_gem_object_unbind(struct drm_i915_gem_object *obj) static int i915_ring_idle(struct intel_ring_buffer *ring) { - if (list_empty(&ring->active_list)) + u32 seqno; + int ret; + + /* We need to add any requests required to flush the objects */ + if (!list_empty(&ring->active_list)) { + seqno = list_entry(ring->active_list.prev, + struct drm_i915_gem_object, + ring_list)->last_read_seqno; + + ret = i915_gem_check_olr(ring, seqno); + if (ret) + return ret; + } + + /* Wait upon the last request to be completed */ + if (list_empty(&ring->request_list)) return 0; - return i915_wait_seqno(ring, i915_gem_next_request_seqno(ring)); + seqno = list_entry(ring->request_list.prev, + struct drm_i915_gem_request, + list)->seqno; + + return i915_wait_seqno(ring, seqno); } int i915_gpu_idle(struct drm_device *dev)