[PATCH v2 3/9] socket: initial cgroup code.
Paul Menage
paul at paulmenage.org
Tue Sep 6 22:26:13 PDT 2011
On Tue, Sep 6, 2011 at 9:23 PM, Glauber Costa <glommer at parallels.com> wrote:
> We aim to control the amount of kernel memory pinned at any
> time by tcp sockets. To lay the foundations for this work,
> this patch adds a pointer to the kmem_cgroup to the socket
> structure.
>
> Signed-off-by: Glauber Costa <glommer at parallels.com>
> CC: David S. Miller <davem at davemloft.net>
> CC: Hiroyouki Kamezawa <kamezawa.hiroyu at jp.fujitsu.com>
> CC: Eric W. Biederman <ebiederm at xmission.com>
> ---
> include/linux/kmem_cgroup.h | 29 +++++++++++++++++++++++++++++
> include/net/sock.h | 2 ++
> net/core/sock.c | 5 ++---
> 3 files changed, 33 insertions(+), 3 deletions(-)
>
> diff --git a/include/linux/kmem_cgroup.h b/include/linux/kmem_cgroup.h
> index 0e4a74b..77076d8 100644
> --- a/include/linux/kmem_cgroup.h
> +++ b/include/linux/kmem_cgroup.h
> @@ -49,5 +49,34 @@ static inline struct kmem_cgroup *kcg_from_task(struct task_struct *tsk)
> return NULL;
> }
> #endif /* CONFIG_CGROUP_KMEM */
> +
> +#ifdef CONFIG_INET
> +#include <net/sock.h>
> +static inline void sock_update_kmem_cgrp(struct sock *sk)
> +{
> +#ifdef CONFIG_CGROUP_KMEM
> + sk->sk_cgrp = kcg_from_task(current);
BUG_ON(sk->sk_cgrp) ? Or else release the old cgroup if necessary.
> @@ -339,6 +340,7 @@ struct sock {
> #endif
> __u32 sk_mark;
> u32 sk_classid;
> + struct kmem_cgroup *sk_cgrp;
Should this be protected by a #ifdef?
Paul
More information about the Containers
mailing list