drm/i915/ttm: add tt shmem backend

[linux-2.6-microblaze.git] / drivers / gpu / drm / i915 / gem / i915_gem_shrinker.c

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_shrinker.c b/drivers/gpu/drm/i915/gem/i915_gem_shrinker.c
index 5ab136f..ae2a8d5 100644 (file)
--- a/drivers/gpu/drm/i915/gem/i915_gem_shrinker.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_shrinker.c
@@ -56,19 +56,24 @@ static bool unsafe_drop_pages(struct drm_i915_gem_object *obj,
        return false;
 }
 
-static void try_to_writeback(struct drm_i915_gem_object *obj,
-                            unsigned int flags)
+static int try_to_writeback(struct drm_i915_gem_object *obj, unsigned int flags)
 {
+       if (obj->ops->shrinker_release_pages)
+               return obj->ops->shrinker_release_pages(obj,
+                                                       flags & I915_SHRINK_WRITEBACK);
+
        switch (obj->mm.madv) {
        case I915_MADV_DONTNEED:
                i915_gem_object_truncate(obj);
-               return;
+               return 0;
        case __I915_MADV_PURGED:
-               return;
+               return 0;
        }
 
        if (flags & I915_SHRINK_WRITEBACK)
                i915_gem_object_writeback(obj);
+
+       return 0;
 }
 
 /**
@@ -222,8 +227,8 @@ i915_gem_shrink(struct i915_gem_ww_ctx *ww,
                                }
 
                                if (!__i915_gem_object_put_pages(obj)) {
-                                       try_to_writeback(obj, shrink);
-                                       count += obj->base.size >> PAGE_SHIFT;
+                                       if (!try_to_writeback(obj, shrink))
+                                               count += obj->base.size >> PAGE_SHIFT;
                                }
                                if (!ww)
                                        i915_gem_object_unlock(obj);