xe_shrinker_mod_pages
xe_shrinker_mod_pages(xe->mem.shrinker, 0, tt->num_pages);
xe_shrinker_mod_pages(xe->mem.shrinker, tt->num_pages, 0);
xe_shrinker_mod_pages(xe->mem.shrinker, 0, -(long)tt->num_pages);
xe_shrinker_mod_pages(xe->mem.shrinker, -(long)tt->num_pages, 0);
void xe_shrinker_mod_pages(struct xe_shrinker *shrinker, long shrinkable, long purgeable);