提交 4bd2c1ee 编写于 作者: M Michal Hocko 提交者: Linus Torvalds

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: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NMichal Hocko <mhocko@suse.cz>
Cc: Glauber Costa <glommer@parallels.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
上级 1939c557
......@@ -51,6 +51,7 @@
#include <linux/oom.h>
#include "internal.h"
#include <net/sock.h>
#include <net/ip.h>
#include <net/tcp_memcontrol.h>
#include <asm/uaccess.h>
......@@ -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 <net/sock.h>
#include <net/ip.h>
#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))
......
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