diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2012-12-03 21:03:14 +0000 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2012-12-07 01:16:15 +0100 |
| commit | e9b73c67390a5d4faec1d22cbdf24cd6fcca53f6 (patch) | |
| tree | 5eef72c851d44d956d20e81678123146a2d71542 /drivers/gpu/drm/i915/i915_gem.c | |
| parent | e69d0bc1c67520c302e070ac078975ea9c786de8 (diff) | |
drm/i915: Reduce memory pressure during shrinker by preallocating swizzle pages
On a machine with bit17 swizzling, we need to store the bit17 of the
physical page address in put-pages. This requires a memory allocation,
on average less than a page, which may be difficult to satisfy is the
request to put-pages is on behalf of the shrinker. We could allow that
allocation to pull from the reserved memory pools, but it seems much
safer to preallocate the array for tiled objects on affected machines.
v2: Export i915_gem_object_needs_bit17_swizzle() for reuse.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem.c | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 02d315164aa..e4b233df576 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -271,14 +271,6 @@ i915_gem_create_ioctl(struct drm_device *dev, void *data, args->size, &args->handle); } -static int i915_gem_object_needs_bit17_swizzle(struct drm_i915_gem_object *obj) -{ - drm_i915_private_t *dev_priv = obj->base.dev->dev_private; - - return dev_priv->mm.bit_6_swizzle_x == I915_BIT_6_SWIZZLE_9_10_17 && - obj->tiling_mode != I915_TILING_NONE; -} - static inline int __copy_to_user_swizzled(char __user *cpu_vaddr, const char *gpu_vaddr, int gpu_offset, |