From 84c07d11aa619c6d24c682f469b10f344f0c02aa Mon Sep 17 00:00:00 2001 From: Kirill Tkhai Date: Fri, 17 Aug 2018 15:47:25 -0700 Subject: [PATCH] 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 Acked-by: Vladimir Davydov Tested-by: Shakeel Butt Cc: Al Viro Cc: Andrey Ryabinin Cc: Chris Wilson Cc: Greg Kroah-Hartman Cc: Guenter Roeck Cc: "Huang, Ying" Cc: Johannes Weiner Cc: Josef Bacik Cc: Li RongQing Cc: Matthew Wilcox Cc: Matthias Kaehlcke Cc: Mel Gorman Cc: Michal Hocko Cc: Minchan Kim Cc: Philippe Ombredanne Cc: Roman Gushchin Cc: Sahitya Tummala Cc: Stephen Rothwell Cc: Tetsuo Handa Cc: Thomas Gleixner Cc: Waiman Long Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- 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(-) 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 57a202f31683..f3c026df7443 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -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 */ diff --git a/include/linux/sched.h b/include/linux/sched.h index 066a2c328653..789923fbee3a 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -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 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 4dc783023e43..9bd50ba8253f 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -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 diff --git a/mm/list_lru.c b/mm/list_lru.c index b65e0b9b0646..c5217d84c6e1 100644 --- a/mm/list_lru.c +++ b/mm/list_lru.c @@ -12,7 +12,7 @@ #include #include -#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) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index d6724bed57d8..2f00b455080f 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 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) { -- GitLab