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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>
This commit is contained in:
Kirill Tkhai 2018-08-17 15:47:25 -07:00 committed by Linus Torvalds
parent e0295238e5
commit 84c07d11aa
9 changed files with 31 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
include/linux/list_lru.h
View File

@ -42,7 +42,7 @@ struct list_lru_node {
spinlock_t lock;
/* global list, used for the root cgroup in cgroup aware lrus */
struct list_lru_one lru;
#if defined(CONFIG_MEMCG) && !defined(CONFIG_SLOB)
#ifdef CONFIG_MEMCG_KMEM
/* for cgroup aware lrus points to per cgroup lists, otherwise NULL */
struct list_lru_memcg __rcu *memcg_lrus;
#endif
@ -51,7 +51,7 @@ struct list_lru_node {
struct list_lru {
struct list_lru_node *node;
#if defined(CONFIG_MEMCG) && !defined(CONFIG_SLOB)
#ifdef CONFIG_MEMCG_KMEM
struct list_head list;
#endif
};

6
include/linux/memcontrol.h
View File

@ -271,7 +271,7 @@ struct mem_cgroup {
bool tcpmem_active;
int tcpmem_pressure;
#ifndef CONFIG_SLOB
#ifdef CONFIG_MEMCG_KMEM
/* Index in the kmem_cache->memcg_params.memcg_caches array */
int kmemcg_id;
enum memcg_kmem_state kmem_state;
@ -1231,7 +1231,7 @@ int memcg_kmem_charge_memcg(struct page *page, gfp_t gfp, int order,
int memcg_kmem_charge(struct page *page, gfp_t gfp, int order);
void memcg_kmem_uncharge(struct page *page, int order);
#if defined(CONFIG_MEMCG) && !defined(CONFIG_SLOB)
#ifdef CONFIG_MEMCG_KMEM
extern struct static_key_false memcg_kmem_enabled_key;
extern struct workqueue_struct *memcg_kmem_cache_wq;
@ -1284,6 +1284,6 @@ static inline void memcg_put_cache_ids(void)
{
}
#endif /* CONFIG_MEMCG && !CONFIG_SLOB */
#endif /* CONFIG_MEMCG_KMEM */
#endif /* _LINUX_MEMCONTROL_H */

2
include/linux/sched.h
View File

@ -723,7 +723,7 @@ struct task_struct {
#endif
#ifdef CONFIG_MEMCG
unsigned in_user_fault:1;
#ifndef CONFIG_SLOB
#ifdef CONFIG_MEMCG_KMEM
unsigned memcg_kmem_skip_account:1;
#endif
#endif

2
include/linux/slab.h
View File

@ -97,7 +97,7 @@
# define SLAB_FAILSLAB 0
#endif
/* Account to memcg */
#if defined(CONFIG_MEMCG) && !defined(CONFIG_SLOB)
#ifdef CONFIG_MEMCG_KMEM
# define SLAB_ACCOUNT ((slab_flags_t __force)0x04000000U)
#else
# define SLAB_ACCOUNT 0

5
init/Kconfig
View File

@ -708,6 +708,11 @@ config MEMCG_SWAP_ENABLED
select this option (if, for some reason, they need to disable it
then swapaccount=0 does the trick).
config MEMCG_KMEM
bool
depends on MEMCG && !SLOB
default y
config BLK_CGROUP
bool "IO controller"
depends on BLOCK

8
mm/list_lru.c
View File

@ -12,7 +12,7 @@
#include <linux/mutex.h>
#include <linux/memcontrol.h>
#if defined(CONFIG_MEMCG) && !defined(CONFIG_SLOB)
#ifdef CONFIG_MEMCG_KMEM
static LIST_HEAD(list_lrus);
static DEFINE_MUTEX(list_lrus_mutex);
@ -103,7 +103,7 @@ list_lru_from_kmem(struct list_lru_node *nlru, void *ptr)
{
return &nlru->lru;
}
#endif /* CONFIG_MEMCG && !CONFIG_SLOB */
#endif /* CONFIG_MEMCG_KMEM */
bool list_lru_add(struct list_lru *lru, struct list_head *item)
{
@ -284,7 +284,7 @@ static void init_one_lru(struct list_lru_one *l)
l->nr_items = 0;
}
#if defined(CONFIG_MEMCG) && !defined(CONFIG_SLOB)
#ifdef CONFIG_MEMCG_KMEM
static void __memcg_destroy_list_lru_node(struct list_lru_memcg *memcg_lrus,
int begin, int end)
{
@ -543,7 +543,7 @@ static int memcg_init_list_lru(struct list_lru *lru, bool memcg_aware)
static void memcg_destroy_list_lru(struct list_lru *lru)
{
}
#endif /* CONFIG_MEMCG && !CONFIG_SLOB */
#endif /* CONFIG_MEMCG_KMEM */
int __list_lru_init(struct list_lru *lru, bool memcg_aware,
struct lock_class_key *key)

16
mm/memcontrol.c
View File

@ -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

6
mm/slab.h
View File

@ -203,7 +203,7 @@ ssize_t slabinfo_write(struct file *file, const char __user *buffer,
void __kmem_cache_free_bulk(struct kmem_cache *, size_t, void **);
int __kmem_cache_alloc_bulk(struct kmem_cache *, gfp_t, size_t, void **);
#if defined(CONFIG_MEMCG) && !defined(CONFIG_SLOB)
#ifdef CONFIG_MEMCG_KMEM
/* List of all root caches. */
extern struct list_head slab_root_caches;
@ -296,7 +296,7 @@ extern void memcg_link_cache(struct kmem_cache *s);
extern void slab_deactivate_memcg_cache_rcu_sched(struct kmem_cache *s,
void (*deact_fn)(struct kmem_cache *));
#else /* CONFIG_MEMCG && !CONFIG_SLOB */
#else /* CONFIG_MEMCG_KMEM */
/* If !memcg, all caches are root. */
#define slab_root_caches slab_caches
@ -351,7 +351,7 @@ static inline void memcg_link_cache(struct kmem_cache *s)
{
}
#endif /* CONFIG_MEMCG && !CONFIG_SLOB */
#endif /* CONFIG_MEMCG_KMEM */
static inline struct kmem_cache *cache_from_obj(struct kmem_cache *s, void *x)
{

8
mm/slab_common.c
View File

@ -127,7 +127,7 @@ int __kmem_cache_alloc_bulk(struct kmem_cache *s, gfp_t flags, size_t nr,
return i;
}
#if defined(CONFIG_MEMCG) && !defined(CONFIG_SLOB)
#ifdef CONFIG_MEMCG_KMEM
LIST_HEAD(slab_root_caches);
@ -256,7 +256,7 @@ static inline void destroy_memcg_params(struct kmem_cache *s)
static inline void memcg_unlink_cache(struct kmem_cache *s)
{
}
#endif /* CONFIG_MEMCG && !CONFIG_SLOB */
#endif /* CONFIG_MEMCG_KMEM */
/*
* Figure out what the alignment of the objects will be given a set of
@ -584,7 +584,7 @@ static int shutdown_cache(struct kmem_cache *s)
return 0;
}
#if defined(CONFIG_MEMCG) && !defined(CONFIG_SLOB)
#ifdef CONFIG_MEMCG_KMEM
/*
* memcg_create_kmem_cache - Create a cache for a memory cgroup.
* @memcg: The memory cgroup the new cache is for.
@ -861,7 +861,7 @@ static inline int shutdown_memcg_caches(struct kmem_cache *s)
static inline void flush_memcg_workqueue(struct kmem_cache *s)
{
}
#endif /* CONFIG_MEMCG && !CONFIG_SLOB */
#endif /* CONFIG_MEMCG_KMEM */
void slab_kmem_cache_release(struct kmem_cache *s)
{