mm: introduce CONFIG_MEMCG_KMEM as combination of CONFIG_MEMCG && !CONFIG_SLOB
Introduce new config option, which is used to replace repeating
CONFIG_MEMCG && !CONFIG_SLOB pattern. Next patches add a little more
memcg+kmem related code, so let's keep the defines more clearly.
Link: http://lkml.kernel.org/r/153063053670.1818.15013136946600481138.stgit@localhost.localdomain
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Acked-by: Vladimir Davydov <vdavydov.dev@gmail.com>
Tested-by: Shakeel Butt <shakeelb@google.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Josef Bacik <jbacik@fb.com>
Cc: Li RongQing <lirongqing@baidu.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Matthias Kaehlcke <mka@chromium.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Cc: Roman Gushchin <guro@fb.com>
Cc: Sahitya Tummala <stummala@codeaurora.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Waiman Long <longman@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index d6724be..2f00b45 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -251,7 +251,7 @@ static inline bool mem_cgroup_is_root(struct mem_cgroup *memcg)
return (memcg == root_mem_cgroup);
}
-#ifndef CONFIG_SLOB
+#ifdef CONFIG_MEMCG_KMEM
/*
* This will be the memcg's index in each cache's ->memcg_params.memcg_caches.
* The main reason for not using cgroup id for this:
@@ -305,7 +305,7 @@ EXPORT_SYMBOL(memcg_kmem_enabled_key);
struct workqueue_struct *memcg_kmem_cache_wq;
-#endif /* !CONFIG_SLOB */
+#endif /* CONFIG_MEMCG_KMEM */
/**
* mem_cgroup_css_from_page - css of the memcg associated with a page
@@ -2215,7 +2215,7 @@ static void commit_charge(struct page *page, struct mem_cgroup *memcg,
unlock_page_lru(page, isolated);
}
-#ifndef CONFIG_SLOB
+#ifdef CONFIG_MEMCG_KMEM
static int memcg_alloc_cache_id(void)
{
int id, size;
@@ -2480,7 +2480,7 @@ void memcg_kmem_uncharge(struct page *page, int order)
css_put_many(&memcg->css, nr_pages);
}
-#endif /* !CONFIG_SLOB */
+#endif /* CONFIG_MEMCG_KMEM */
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
@@ -2875,7 +2875,7 @@ static u64 mem_cgroup_read_u64(struct cgroup_subsys_state *css,
}
}
-#ifndef CONFIG_SLOB
+#ifdef CONFIG_MEMCG_KMEM
static int memcg_online_kmem(struct mem_cgroup *memcg)
{
int memcg_id;
@@ -2975,7 +2975,7 @@ static void memcg_offline_kmem(struct mem_cgroup *memcg)
static void memcg_free_kmem(struct mem_cgroup *memcg)
{
}
-#endif /* !CONFIG_SLOB */
+#endif /* CONFIG_MEMCG_KMEM */
static int memcg_update_kmem_max(struct mem_cgroup *memcg,
unsigned long max)
@@ -4279,7 +4279,7 @@ static struct mem_cgroup *mem_cgroup_alloc(void)
INIT_LIST_HEAD(&memcg->event_list);
spin_lock_init(&memcg->event_list_lock);
memcg->socket_pressure = jiffies;
-#ifndef CONFIG_SLOB
+#ifdef CONFIG_MEMCG_KMEM
memcg->kmemcg_id = -1;
#endif
#ifdef CONFIG_CGROUP_WRITEBACK
@@ -6119,7 +6119,7 @@ static int __init mem_cgroup_init(void)
{
int cpu, node;
-#ifndef CONFIG_SLOB
+#ifdef CONFIG_MEMCG_KMEM
/*
* Kmem cache creation is mostly done with the slab_mutex held,
* so use a workqueue with limited concurrency to avoid stalling