Messages in this thread | | | From | Paul Menage <> | Date | Tue, 6 Sep 2011 22:26:13 -0700 | Subject | Re: [PATCH v2 3/9] socket: initial cgroup code. |
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On Tue, Sep 6, 2011 at 9:23 PM, Glauber Costa <glommer@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@parallels.com> > CC: David S. Miller <davem@davemloft.net> > CC: Hiroyouki Kamezawa <kamezawa.hiroyu@jp.fujitsu.com> > CC: Eric W. Biederman <ebiederm@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?
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