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authorMichal Hocko <mhocko@suse.cz>2015-09-08 15:01:02 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-09-08 15:35:28 -0700
commit33398cf2f360c5ce24c8a22436d52a06ad4e5eb5 (patch)
treec4b967003133425ede67467188d8f96c033185c2 /include/net/sock.h
parentb3d9ed3fd872fc074286674ae8595ee880938bbf (diff)
memcg: export struct mem_cgroup
mem_cgroup structure is defined in mm/memcontrol.c currently which means that the code outside of this file has to use external API even for trivial access stuff. This patch exports mm_struct with its dependencies and makes some of the exported functions inlines. This even helps to reduce the code size a bit (make defconfig + CONFIG_MEMCG=y) text data bss dec hex filename 12355346 1823792 1089536 15268674 e8fb42 vmlinux.before 12354970 1823792 1089536 15268298 e8f9ca vmlinux.after This is not much (370B) but better than nothing. We also save a function call in some hot paths like callers of mem_cgroup_count_vm_event which is used for accounting. The patch doesn't introduce any functional changes. [vdavykov@parallels.com: inline memcg_kmem_is_active] [vdavykov@parallels.com: do not expose type outside of CONFIG_MEMCG] [akpm@linux-foundation.org: memcontrol.h needs eventfd.h for eventfd_ctx] [akpm@linux-foundation.org: export mem_cgroup_from_task() to modules] Signed-off-by: Michal Hocko <mhocko@suse.cz> Reviewed-by: Vladimir Davydov <vdavydov@parallels.com> Suggested-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/net/sock.h')
-rw-r--r--include/net/sock.h28
1 files changed, 0 insertions, 28 deletions
diff --git a/include/net/sock.h b/include/net/sock.h
index 43c6abcf06ab..a98c71ea40c5 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -1042,34 +1042,6 @@ struct proto {
#endif
};
-/*
- * Bits in struct cg_proto.flags
- */
-enum cg_proto_flags {
- /* Currently active and new sockets should be assigned to cgroups */
- MEMCG_SOCK_ACTIVE,
- /* It was ever activated; we must disarm static keys on destruction */
- MEMCG_SOCK_ACTIVATED,
-};
-
-struct cg_proto {
- struct page_counter memory_allocated; /* Current allocated memory. */
- struct percpu_counter sockets_allocated; /* Current number of sockets. */
- int memory_pressure;
- long sysctl_mem[3];
- unsigned long flags;
- /*
- * memcg field is used to find which memcg we belong directly
- * Each memcg struct can hold more than one cg_proto, so container_of
- * won't really cut.
- *
- * The elegant solution would be having an inverse function to
- * proto_cgroup in struct proto, but that means polluting the structure
- * for everybody, instead of just for memcg users.
- */
- struct mem_cgroup *memcg;
-};
-
int proto_register(struct proto *prot, int alloc_slab);
void proto_unregister(struct proto *prot);