tree 95b691de97a205a8e958e1eea374d8d2b98a38d6
parent ac0ddfd9c57c777784fa447de889d7473bde043b
author Minchan Kim <minchan@google.com> 1530066760 +0900
committer Minchan Kim <minchan@google.com> 1535420711 +0000

Add system_server to system group only if per_app_memcg is true

P18 or other high-performance devices shouldn't use per-memcg so
it was disabled on those devices[1]. However, we didn't turn off
for system_server memcg so those devices still have two seperate
LRU groups which would have less efficient memory reclaim.

Therefore, this patch makes memcg use for system_server only if
per_app_memcg is enabled.

[1] https://googleplex-android-review.git.corp.google.com/c/platform/system/core/+/4178592

Bug: 110858093
Test: confirm via cat /dev/memcg/system/tasks is none
Change-Id: Ic0e3157bf8ff5de69767797b5508946ca3efeb68
Merged-In: Ic0e3157bf8ff5de69767797b5508946ca3efeb68
Signed-off-by: Minchan Kim <minchan@google.com>
(cherry picked from commit 5fa8af2b10d24fb6c08099d258bf887baf68ffb0)