drm/msm: add madvise ioctl

Doesn't do anything too interesting until we wire up shrinker. Pretty much lifted from i915. Signed-off-by: Rob Clark <robdclark@gmail.com>
2016-05-17 15:44:49 -04:00
parent b5b4c264df
commit 4cd33c48ea
5 changed files with 102 additions and 3 deletions
--- a/drivers/gpu/drm/msm/msm_gem.h
+++ b/drivers/gpu/drm/msm/msm_gem.h
@@ -29,6 +29,11 @@ struct msm_gem_object {

 	uint32_t flags;

+	/**
+	 * Advice: are the backing pages purgeable?
+	 */
+	uint8_t madv;
+
 	/* And object is either:
 	 *  inactive - on priv->inactive_list
 	 *  active   - on one one of the gpu's active_list..  well, at