[RHEL8,COMMIT] mm: introduce CONFIG_MEMCG_KMEM as combination of CONFIG_MEMCG && !CONFIG_SLOB

Submitted by Konstantin Khorenko on April 2, 2020, 2:12 p.m.

Details

Message ID 202004021412.032ECAid017417@finist_co8.work.ct
State New
Series "Series without cover letter"
Headers show

Commit Message

Konstantin Khorenko April 2, 2020, 2:12 p.m.
The commit is pushed to "branch-rh8-4.18.0-80.1.2.vz8.3.x-ovz" and will appear at https://src.openvz.org/scm/ovz/vzkernel.git
after rh8-4.18.0-80.1.2.vz8.3.4
------>
commit e5b8382481c67804849fa3a4a584c2b4a07877a2
Author: Kirill Tkhai <ktkhai@virtuozzo.com>
Date:   Thu Apr 2 17:12:09 2020 +0300

    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>
    (cherry picked from commit 84c07d11aa619c6d24c682f469b10f344f0c02aa)
    Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
---
 include/linux/list_lru.h   |  4 ++--
 include/linux/memcontrol.h |  6 +++---
 include/linux/sched.h      |  2 +-
 include/linux/slab.h       |  2 +-
 init/Kconfig               |  5 +++++
 mm/list_lru.c              |  8 ++++----
 mm/memcontrol.c            | 16 ++++++++--------
 mm/slab.h                  |  6 +++---
 mm/slab_common.c           |  8 ++++----
 9 files changed, 31 insertions(+), 26 deletions(-)

Patch hide | download patch | download mbox

diff --git a/include/linux/list_lru.h b/include/linux/list_lru.h
index 96def9d15b1b..2d23b5b745be 100644
--- a/include/linux/list_lru.h
+++ b/include/linux/list_lru.h
@@ -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
 };
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 43f9020c392c..b7e6e45c15d6 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -272,7 +272,7 @@  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;
@@ -1294,7 +1294,7 @@  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;
 
@@ -1347,6 +1347,6 @@  static inline void memcg_put_cache_ids(void)
 {
 }
 
-#endif /* CONFIG_MEMCG && !CONFIG_SLOB */
+#endif /* CONFIG_MEMCG_KMEM */
 
 #endif /* _LINUX_MEMCONTROL_H */
diff --git a/include/linux/sched.h b/include/linux/sched.h
index a1acf8723caf..56e89e17dd23 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -736,7 +736,7 @@  struct task_struct {
 #endif
 #ifdef CONFIG_MEMCG
 	unsigned			memcg_may_oom:1;
-#ifndef CONFIG_SLOB
+#ifdef CONFIG_MEMCG_KMEM
 	unsigned			memcg_kmem_skip_account:1;
 #endif
 #endif
diff --git a/include/linux/slab.h b/include/linux/slab.h
index 14e3fe4bd6a1..ed9cbddeb4a6 100644
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -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
diff --git a/init/Kconfig b/init/Kconfig
index ac58c688c7d3..9560a06d735a 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -678,6 +678,11 @@  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
diff --git a/mm/list_lru.c b/mm/list_lru.c
index 1e3e2f3a2a64..7621084d5a7d 100644
--- a/mm/list_lru.c
+++ b/mm/list_lru.c
@@ -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)
 {
@@ -290,7 +290,7 @@  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)
 {
@@ -549,7 +549,7 @@  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)
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 6909824a0ba1..8c582652a096 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -255,7 +255,7 @@  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:
@@ -309,7 +309,7 @@  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
@@ -2232,7 +2232,7 @@  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;
@@ -2490,7 +2490,7 @@  void memcg_kmem_uncharge(struct page *page, int order)
 
 	css_put_many(&memcg->css, nr_pages);
 }
-#endif /* !CONFIG_SLOB */
+#endif /* CONFIG_MEMCG_KMEM */
 
 int memcg_charge_kmem(struct mem_cgroup *memcg, gfp_t gfp,
 			     unsigned long nr_pages)
@@ -2940,7 +2940,7 @@  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;
@@ -3040,7 +3040,7 @@  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)
@@ -4736,7 +4736,7 @@  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
@@ -6615,7 +6615,7 @@  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
diff --git a/mm/slab.h b/mm/slab.h
index 68bdf498da3b..58c6c1c2a78e 100644
--- a/mm/slab.h
+++ b/mm/slab.h
@@ -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)
 {
diff --git a/mm/slab_common.c b/mm/slab_common.c
index 2296caf87bfb..fea3376f9816 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -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)
 {