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authorDaniel Vetter <daniel.vetter@ffwll.ch>2012-12-20 15:11:16 +0100
committerDaniel Vetter <daniel.vetter@ffwll.ch>2012-12-20 14:57:35 +0100
commitda494d7ca5e0a1afca3480826b5060e15c951e80 (patch)
tree57444658015505cb7cb8596d0e3e8d607cc076e7 /drivers/gpu/drm/i915
parentdrm/i915: optionally disable shrinker lock stealing (diff)
downloadlinux-da494d7ca5e0a1afca3480826b5060e15c951e80.tar.xz
linux-da494d7ca5e0a1afca3480826b5060e15c951e80.zip
drm/i915: disable shrinker lock stealing for create_mmap_offset
The mmap offset structure is not part of the drm/i915 code, but provided by gem helpers. To avoid leaky abstractions (by either depending upon implementation details of said helper wrt to preallocations, or reimplementing it in our code and so fuzzing around in internal details of that helpr) simply disable the shrinker lock stealing accross calls into the helper functions. This should fix igt/gem_tiled_swapping. v2: Fix cleanup path confusion bemoaned by Chris Wilson. Reported-by: Mika Kuoppala <mika.kuoppala@linux.intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915')
-rw-r--r--drivers/gpu/drm/i915/i915_gem.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index ad6f321083a6..84146ad565da 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -1517,9 +1517,11 @@ static int i915_gem_object_create_mmap_offset(struct drm_i915_gem_object *obj)
if (obj->base.map_list.map)
return 0;
+ dev_priv->mm.shrinker_no_lock_stealing = true;
+
ret = drm_gem_create_mmap_offset(&obj->base);
if (ret != -ENOSPC)
- return ret;
+ goto out;
/* Badly fragmented mmap space? The only way we can recover
* space is by destroying unwanted objects. We can't randomly release
@@ -1531,10 +1533,14 @@ static int i915_gem_object_create_mmap_offset(struct drm_i915_gem_object *obj)
i915_gem_purge(dev_priv, obj->base.size >> PAGE_SHIFT);
ret = drm_gem_create_mmap_offset(&obj->base);
if (ret != -ENOSPC)
- return ret;
+ goto out;
i915_gem_shrink_all(dev_priv);
- return drm_gem_create_mmap_offset(&obj->base);
+ ret = drm_gem_create_mmap_offset(&obj->base);
+out:
+ dev_priv->mm.shrinker_no_lock_stealing = false;
+
+ return ret;
}
static void i915_gem_object_free_mmap_offset(struct drm_i915_gem_object *obj)