]> git.openfabrics.org - ~shefty/rdma-dev.git/commit
socket: initial cgroup code.
authorGlauber Costa <glommer@parallels.com>
Sun, 11 Dec 2011 21:47:03 +0000 (21:47 +0000)
committerDavid S. Miller <davem@davemloft.net>
Tue, 13 Dec 2011 00:04:10 +0000 (19:04 -0500)
commite1aab161e0135aafcd439be20b4f35e4b0922d95
treed0bcdf7a34a34020079238027b431ffc6dece307
parent180d8cd942ce336b2c869d324855c40c5db478ad
socket: initial cgroup code.

The goal of this work is to move the memory pressure tcp
controls to a cgroup, instead of just relying on global
conditions.

To avoid excessive overhead in the network fast paths,
the code that accounts allocated memory to a cgroup is
hidden inside a static_branch(). This branch is patched out
until the first non-root cgroup is created. So when nobody
is using cgroups, even if it is mounted, no significant performance
penalty should be seen.

This patch handles the generic part of the code, and has nothing
tcp-specific.

Signed-off-by: Glauber Costa <glommer@parallels.com>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujtsu.com>
CC: Kirill A. Shutemov <kirill@shutemov.name>
CC: David S. Miller <davem@davemloft.net>
CC: Eric W. Biederman <ebiederm@xmission.com>
CC: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Documentation/cgroups/memory.txt
include/linux/memcontrol.h
include/net/sock.h
mm/memcontrol.c
net/core/sock.c