commit bf24c43b7f90290d2ac6f8163b43ab00f8f820b9
author Liujie Xie <xieliujie@oppo.com> Fri Jun 25 22:16:33 2021 +0800
committer Carlos Llamas <cmllamas@google.com> Tue Jul 19 12:47:38 2022 +0000
tree b78b6de880bb5dd185ecee10271795d702630c0e
parent 7af5027889c760a4e02abf7cbd1b95685af4b233

ANDROID: Export memcg functions to allow module to add new files

Export cgroup_add_legacy_cftypes and a helper function to allow vendor module to expose additional files in the memory cgroup hierarchy.

Bug: 192052083

Signed-off-by: Liujie Xie <xieliujie@oppo.com>
Change-Id: Ie2b936b3e77c7ab6d740d1bb6d70e03c70a326a7
(cherry picked from commit f41a95eadca98506e627b21f5cc73332bba4d95c)

mm/memcontrol.c

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 42afe65..453d894 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -5110,6 +5110,7 @@ struct mem_cgroup *mem_cgroup_from_id(unsigned short id)
 	WARN_ON_ONCE(!rcu_read_lock_held());
 	return idr_find(&mem_cgroup_idr, id);
 }
+EXPORT_SYMBOL_GPL(mem_cgroup_from_id);
 
 static int alloc_mem_cgroup_per_node_info(struct mem_cgroup *memcg, int node)
 {