diff options
Diffstat (limited to 'include/linux/vmpressure.h')
| -rw-r--r-- | include/linux/vmpressure.h | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/include/linux/vmpressure.h b/include/linux/vmpressure.h index 3e4535876d37..3219db333b36 100644 --- a/include/linux/vmpressure.h +++ b/include/linux/vmpressure.h @@ -12,6 +12,7 @@ struct vmpressure { unsigned long scanned; unsigned long reclaimed; + unsigned long stall; /* The lock is used to keep the scanned/reclaimed above in sync. */ struct spinlock sr_lock; @@ -25,11 +26,13 @@ struct vmpressure { struct mem_cgroup; -#ifdef CONFIG_MEMCG +extern int vmpressure_notifier_register(struct notifier_block *nb); +extern int vmpressure_notifier_unregister(struct notifier_block *nb); extern void vmpressure(gfp_t gfp, struct mem_cgroup *memcg, unsigned long scanned, unsigned long reclaimed); extern void vmpressure_prio(gfp_t gfp, struct mem_cgroup *memcg, int prio); +#ifdef CONFIG_MEMCG extern void vmpressure_init(struct vmpressure *vmpr); extern void vmpressure_cleanup(struct vmpressure *vmpr); extern struct vmpressure *memcg_to_vmpressure(struct mem_cgroup *memcg); @@ -40,9 +43,9 @@ extern int vmpressure_register_event(struct mem_cgroup *memcg, extern void vmpressure_unregister_event(struct mem_cgroup *memcg, struct eventfd_ctx *eventfd); #else -static inline void vmpressure(gfp_t gfp, struct mem_cgroup *memcg, - unsigned long scanned, unsigned long reclaimed) {} -static inline void vmpressure_prio(gfp_t gfp, struct mem_cgroup *memcg, - int prio) {} +static inline struct vmpressure *memcg_to_vmpressure(struct mem_cgroup *memcg) +{ + return NULL; +} #endif /* CONFIG_MEMCG */ #endif /* __LINUX_VMPRESSURE_H */ |