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drm/i915: Kill the active list spinlock

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This spinlock only served debugging purposes in a time when we could not
be sure of the mutex ever being released upon a GPU hang. As we now
should be able rely on hangcheck to do the job for us (and that error
reporting should not itself require the struct mutex) we can kill the
incomplete attempt at protection.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson
2010-07-03 07:58:38 +01:00
parent 015b9c8ce5
commit de227ef090
4 changed files with 65 additions and 66 deletions
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drivers/gpu/drm/i915/i915_gem_evict.c
-5
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@@ -212,14 +212,11 @@ i915_gem_evict_everything(struct drm_device *dev)
int ret;
bool lists_empty;
spin_lock(&dev_priv->mm.active_list_lock);
lists_empty = (list_empty(&dev_priv->mm.inactive_list) &&
list_empty(&dev_priv->mm.flushing_list) &&
list_empty(&dev_priv->render_ring.active_list) &&
(!HAS_BSD(dev)
|| list_empty(&dev_priv->bsd_ring.active_list)));
spin_unlock(&dev_priv->mm.active_list_lock);
if (lists_empty)
return -ENOSPC;
@@ -234,13 +231,11 @@ i915_gem_evict_everything(struct drm_device *dev)
if (ret)
return ret;
spin_lock(&dev_priv->mm.active_list_lock);
lists_empty = (list_empty(&dev_priv->mm.inactive_list) &&
list_empty(&dev_priv->mm.flushing_list) &&
list_empty(&dev_priv->render_ring.active_list) &&
(!HAS_BSD(dev)
|| list_empty(&dev_priv->bsd_ring.active_list)));
spin_unlock(&dev_priv->mm.active_list_lock);
BUG_ON(!lists_empty);
return 0;