From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Wilson Subject: [PATCH 4/6] drm/i915: Remove explicit flush from i915_gem_object_flush_fence() Date: Thu, 12 Jul 2012 16:13:37 +0100 Message-ID: <1342106019-17806-5-git-send-email-chris@chris-wilson.co.uk> References: <1342106019-17806-1-git-send-email-chris@chris-wilson.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from fireflyinternet.com (smtp.fireflyinternet.com [109.228.6.236]) by gabe.freedesktop.org (Postfix) with ESMTP id DFCF29E826 for ; Thu, 12 Jul 2012 08:14:16 -0700 (PDT) In-Reply-To: <1342106019-17806-1-git-send-email-chris@chris-wilson.co.uk> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org To: intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org As the flush is either performed explictly immediately after the execbuffer dispatch, or before the serialisation of last_fenced_seqno we can forgo the explict i915_gem_flush_ring(). Signed-off-by: Chris Wilson --- drivers/gpu/drm/i915/i915_gem.c | 16 ++-------------- 1 file changed, 2 insertions(+), 14 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 535dd61..e574835 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -2455,21 +2455,8 @@ static void i915_gem_object_update_fence(struct drm_i915_gem_object *obj, static int i915_gem_object_flush_fence(struct drm_i915_gem_object *obj) { - int ret; - - if (obj->fenced_gpu_access) { - if (obj->base.write_domain & I915_GEM_GPU_DOMAINS) { - ret = i915_gem_flush_ring(obj->ring, - 0, obj->base.write_domain); - if (ret) - return ret; - } - - obj->fenced_gpu_access = false; - } - if (obj->last_fenced_seqno) { - ret = i915_wait_seqno(obj->ring, obj->last_fenced_seqno); + int ret = i915_wait_seqno(obj->ring, obj->last_fenced_seqno); if (ret) return ret; @@ -2482,6 +2469,7 @@ i915_gem_object_flush_fence(struct drm_i915_gem_object *obj) if (obj->base.read_domains & I915_GEM_DOMAIN_GTT) mb(); + obj->fenced_gpu_access = false; return 0; } -- 1.7.10.4