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drm/i915: Search harder for a reusable object

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As evict_something() is called by routines that do not repeatedly search
again, try harder in the initial search to find an object that matches
the request.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2009-09-20 20:16:50 +01:00
parent ab5ee57650
commit 9a1e2582d8
1 changed files with 22 additions and 21 deletions
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43
drivers/gpu/drm/i915/i915_gem.c
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@ -2113,7 +2113,6 @@ i915_gem_evict_something(struct drm_device *dev, int min_size)
{
drm_i915_private_t *dev_priv = dev->dev_private;
struct drm_gem_object *obj;
int have_waited = 0;
int ret;
for (;;) {
@ -2137,9 +2136,6 @@ i915_gem_evict_something(struct drm_device *dev, int min_size)
return i915_gem_object_unbind(obj);
}
if (have_waited)
return 0;
/* If we didn't get anything, but the ring is still processing
* things, wait for the next to finish and hopefully leave us
* a buffer to evict.
@ -2155,7 +2151,6 @@ i915_gem_evict_something(struct drm_device *dev, int min_size)
if (ret)
return ret;
have_waited = 1;
continue;
}
@ -2166,26 +2161,32 @@ i915_gem_evict_something(struct drm_device *dev, int min_size)
*/
if (!list_empty(&dev_priv->mm.flushing_list)) {
struct drm_i915_gem_object *obj_priv;
uint32_t seqno;
obj_priv = list_first_entry(&dev_priv->mm.flushing_list,
struct drm_i915_gem_object,
list);
obj = obj_priv->obj;
/* Find an object that we can immediately reuse */
list_for_each_entry(obj_priv, &dev_priv->mm.flushing_list, list) {
obj = obj_priv->obj;
if (obj->size >= min_size)
break;
i915_gem_flush(dev,
obj->write_domain,
obj->write_domain);
seqno = i915_add_request(dev, NULL, obj->write_domain);
if (seqno == 0)
return -ENOMEM;
obj = NULL;
}
ret = i915_wait_request(dev, seqno);
if (ret)
return ret;
if (obj != NULL) {
uint32_t seqno;
have_waited = 1;
continue;
i915_gem_flush(dev,
obj->write_domain,
obj->write_domain);
seqno = i915_add_request(dev, NULL, obj->write_domain);
if (seqno == 0)
return -ENOMEM;
ret = i915_wait_request(dev, seqno);
if (ret)
return ret;
continue;
}
}
/* If we didn't do any of the above, there's no single buffer