[PATCH 4/4] drm/i915: Prevent fence-reuse stalls

From: Chris Wilson <chris@chris-wilson.co.uk>
To: intel-gfx@lists.freedesktop.org
Cc: Andy Whitcroft <apw@canonical.com>
Subject: [PATCH 4/4] drm/i915: Prevent fence-reuse stalls
Date: Fri, 18 Mar 2011 22:35:19 +0000	[thread overview]
Message-ID: <1300487719-26578-5-git-send-email-chris@chris-wilson.co.uk> (raw)
In-Reply-To: <1300487719-26578-1-git-send-email-chris@chris-wilson.co.uk>

With the last bug preventing fence pipelining fixed (or at least the
last known bug), re-enable pipelining to avoid stalling on fence
acquisition between batches.

Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/i915_gem.c |    3 ---
 1 files changed, 0 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 2dbf8f7..78dba7a 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2575,9 +2575,6 @@ i915_gem_object_get_fence(struct drm_i915_gem_object *obj,
 	struct drm_i915_fence_reg *reg;
 	int ret;
 
-	/* XXX disable pipelining. There are bugs. Shocking. */
-	pipelined = NULL;
-
 	/* Just update our place in the LRU if our fence is getting reused. */
 	if (obj->fence_reg != I915_FENCE_REG_NONE) {
 		reg = &dev_priv->fence_regs[obj->fence_reg];
-- 
1.7.2.3
