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tcp memory pressure controls

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This patch introduces memory pressure controls for the tcp
protocol. It uses the generic socket memory pressure code
introduced in earlier patches, and fills in the
necessary data in cg_proto struct.

Signed-off-by: Glauber Costa <glommer@parallels.com>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujtisu.com>
CC: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Glauber Costa 2011-12-11 21:47:04 +00:00 • committed by David S. Miller
parent e1aab161e0
commit d1a4c0b37c
10 changed files with 189 additions and 5 deletions
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17
include/net/tcp_memcontrol.h Normal file
View file

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#ifndef _TCP_MEMCG_H
#define _TCP_MEMCG_H
struct tcp_memcontrol {
struct cg_proto cg_proto;
/* per-cgroup tcp memory pressure knobs */
struct res_counter tcp_memory_allocated;
struct percpu_counter tcp_sockets_allocated;
/* those two are read-mostly, leave them at the end */
long tcp_prot_mem[3];
int tcp_memory_pressure;
};
struct cg_proto *tcp_proto_cgroup(struct mem_cgroup *memcg);
int tcp_init_cgroup(struct cgroup *cgrp, struct cgroup_subsys *ss);
void tcp_destroy_cgroup(struct cgroup *cgrp, struct cgroup_subsys *ss);
#endif /* _TCP_MEMCG_H */