On 09/26/2011 07:59 AM, KAMEZAWA Hiroyuki wrote:
On Sun, 18 Sep 2011 21:56:42 -0300
Glauber Costa<glommer@xxxxxxxxxxxxx> wrote:
With all the infrastructure in place, this patch implements
per-cgroup control for tcp memory pressure handling.
Signed-off-by: Glauber Costa<glommer@xxxxxxxxxxxxx>
CC: David S. Miller<davem@xxxxxxxxxxxxx>
CC: Hiroyouki Kamezawa<kamezawa.hiroyu@xxxxxxxxxxxxxx>
CC: Eric W. Biederman<ebiederm@xxxxxxxxxxxx>
a comment below.
+int tcp_init_cgroup(struct proto *prot, struct cgroup *cgrp,
+ struct cgroup_subsys *ss)
+{
+ struct mem_cgroup *cg = mem_cgroup_from_cont(cgrp);
+ unsigned long limit;
+
+ cg->tcp_memory_pressure = 0;
+ atomic_long_set(&cg->tcp_memory_allocated, 0);
+ percpu_counter_init(&cg->tcp_sockets_allocated, 0);
+
+ limit = nr_free_buffer_pages() / 8;
+ limit = max(limit, 128UL);
+
+ cg->tcp_prot_mem[0] = sysctl_tcp_mem[0];
+ cg->tcp_prot_mem[1] = sysctl_tcp_mem[1];
+ cg->tcp_prot_mem[2] = sysctl_tcp_mem[2];
+
Then, the parameter doesn't inherit parent's one ?
I think sockets_populate should pass 'parent' and
I think you should have a function
mem_cgroup_should_inherit_parent_settings(parent)
(This is because you made this feature as a part of memcg.
please provide expected behavior.)
All right Kame, will do.
Thanks.
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