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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2009-09-14 16:50:29 +0100 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2009-09-17 14:43:31 -0700 |
| commit | 3ef94daae7530b4ebcd2e5f48f1028cd2d2470ba (patch) | |
| tree | 130f7e46f4d34b3016775c9e1980d971c475dc55 /drivers/gpu/drm/i915/i915_drv.h | |
| parent | 31169714fc928aed4e945b959dca2bedd259b9c9 (diff) | |
| download | lwn-3ef94daae7530b4ebcd2e5f48f1028cd2d2470ba.tar.gz lwn-3ef94daae7530b4ebcd2e5f48f1028cd2d2470ba.zip | |
drm/i915: Add ioctl to set 'purgeability' of objects
Similar to the madvise() concept, the application may wish to mark some
data as volatile. That is in the event of memory pressure the kernel is
free to discard such buffers safe in the knowledge that the application
can recreate them on demand, and is simply using these as a cache.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index bbcf5fc72666..2f89c2136be9 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -566,6 +566,11 @@ struct drm_i915_gem_object { * in an execbuffer object list. */ int in_execbuffer; + + /** + * Advice: are the backing pages purgeable? + */ + int madv; }; /** @@ -705,6 +710,8 @@ int i915_gem_busy_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); int i915_gem_throttle_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); +int i915_gem_madvise_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv); int i915_gem_entervt_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); int i915_gem_leavevt_ioctl(struct drm_device *dev, void *data, |