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drm/i915/shrinker: Restrict vmap purge to objects with vmaps

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When called because we have run out of vmap address space, we only need
to recover objects that have vmappings and not all.

v2: Start using is_vmalloc_addr()

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1460113874-17366-5-git-send-email-chris@chris-wilson.co.uk
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
This commit is contained in:
Chris Wilson 2016-04-08 12:11:12 +01:00
parent 0a798eb92e
commit eae2c43b12
2 changed files with 10 additions and 1 deletions
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1
drivers/gpu/drm/i915/i915_drv.h
View File

@ -3342,6 +3342,7 @@ unsigned long i915_gem_shrink(struct drm_i915_private *dev_priv,
#define I915_SHRINK_UNBOUND 0x2
#define I915_SHRINK_BOUND 0x4
#define I915_SHRINK_ACTIVE 0x8
#define I915_SHRINK_VMAPS 0x10
unsigned long i915_gem_shrink_all(struct drm_i915_private *dev_priv);
void i915_gem_shrinker_init(struct drm_i915_private *dev_priv);
void i915_gem_shrinker_cleanup(struct drm_i915_private *dev_priv);

10
drivers/gpu/drm/i915/i915_gem_shrinker.c
View File

@ -167,6 +167,10 @@ i915_gem_shrink(struct drm_i915_private *dev_priv,
obj->madv != I915_MADV_DONTNEED)
continue;
if (flags & I915_SHRINK_VMAPS &&
!is_vmalloc_addr(obj->mapping))
continue;
if ((flags & I915_SHRINK_ACTIVE) == 0 && obj->active)
continue;
@ -388,7 +392,11 @@ i915_gem_shrinker_vmap(struct notifier_block *nb, unsigned long event, void *ptr
if (!i915_gem_shrinker_lock_uninterruptible(dev_priv, &slu, 5000))
return NOTIFY_DONE;
freed_pages = i915_gem_shrink_all(dev_priv);
freed_pages = i915_gem_shrink(dev_priv, -1UL,
I915_SHRINK_BOUND |
I915_SHRINK_UNBOUND |
I915_SHRINK_ACTIVE |
I915_SHRINK_VMAPS);
i915_gem_shrinker_unlock_uninterruptible(dev_priv, &slu);