mm: memcontrol: account socket memory in unified hierarchy memory controller
authorJohannes Weiner <hannes@cmpxchg.org>
Thu, 14 Jan 2016 23:21:29 +0000 (15:21 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 15 Jan 2016 00:00:49 +0000 (16:00 -0800)
commitf7e1cb6ec51b041335b5ad4dd7aefb37a56d79a6
treee99135a85ed74987871cf8608287321735249305
parent1109208766d9fa7059a9b66ad488e66d99ce49af
mm: memcontrol: account socket memory in unified hierarchy memory controller

Socket memory can be a significant share of overall memory consumed by
common workloads.  In order to provide reasonable resource isolation in
the unified hierarchy, this type of memory needs to be included in the
tracking/accounting of a cgroup under active memory resource control.

Overhead is only incurred when a non-root control group is created AND
the memory controller is instructed to track and account the memory
footprint of that group.  cgroup.memory=nosocket can be specified on the
boot commandline to override any runtime configuration and forcibly
exclude socket memory from active memory resource control.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: David S. Miller <davem@davemloft.net>
Reviewed-by: Vladimir Davydov <vdavydov@virtuozzo.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Documentation/kernel-parameters.txt
include/linux/memcontrol.h
mm/memcontrol.c