From 4bd2c1ee4b439d926e437a4841e8145230df98c9 Mon Sep 17 00:00:00 2001 From: Michal Hocko Date: Mon, 8 Oct 2012 16:33:10 -0700 Subject: [PATCH] memcg: cleanup kmem tcp ifdefs TCP kmem accounting is currently guarded by CONFIG_MEMCG_KMEM ifdefs but the code is not used if !CONFIG_INET so we should rather test for both. The same applies to net/sock.h, net/ip.h and net/tcp_memcontrol.h but let's keep those outside of any ifdefs because it is considered safer wrt. future maintainability. Tested with - CONFIG_INET && CONFIG_MEMCG_KMEM - !CONFIG_INET && CONFIG_MEMCG_KMEM - CONFIG_INET && !CONFIG_MEMCG_KMEM - !CONFIG_INET && !CONFIG_MEMCG_KMEM Signed-off-by: Sachin Kamat Signed-off-by: Michal Hocko Cc: Glauber Costa Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/memcontrol.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index a72f2ffdc3d0..4f5f93657246 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -51,6 +51,7 @@ #include #include "internal.h" #include +#include #include #include @@ -326,7 +327,7 @@ struct mem_cgroup { struct mem_cgroup_stat_cpu nocpu_base; spinlock_t pcp_counter_lock; -#ifdef CONFIG_INET +#if defined(CONFIG_MEMCG_KMEM) && defined(CONFIG_INET) struct tcp_memcontrol tcp_mem; #endif }; @@ -412,9 +413,7 @@ struct mem_cgroup *mem_cgroup_from_css(struct cgroup_subsys_state *s) } /* Writing them here to avoid exposing memcg's inner layout */ -#ifdef CONFIG_MEMCG_KMEM -#include -#include +#if defined(CONFIG_INET) && defined(CONFIG_MEMCG_KMEM) static bool mem_cgroup_is_root(struct mem_cgroup *memcg); void sock_update_memcg(struct sock *sk) @@ -461,7 +460,6 @@ void sock_release_memcg(struct sock *sk) } } -#ifdef CONFIG_INET struct cg_proto *tcp_proto_cgroup(struct mem_cgroup *memcg) { if (!memcg || mem_cgroup_is_root(memcg)) @@ -470,10 +468,7 @@ struct cg_proto *tcp_proto_cgroup(struct mem_cgroup *memcg) return &memcg->tcp_mem.cg_proto; } EXPORT_SYMBOL(tcp_proto_cgroup); -#endif /* CONFIG_INET */ -#endif /* CONFIG_MEMCG_KMEM */ -#if defined(CONFIG_INET) && defined(CONFIG_MEMCG_KMEM) static void disarm_sock_keys(struct mem_cgroup *memcg) { if (!memcg_proto_activated(&memcg->tcp_mem.cg_proto)) -- 2.20.1