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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354/* SPDX-License-Identifier: GPL-2.0 */#ifndef __LINUX_VMPRESSURE_H#define __LINUX_VMPRESSURE_H
#include <linux/mutex.h>#include <linux/list.h>#include <linux/workqueue.h>#include <linux/gfp.h>#include <linux/types.h>#include <linux/cgroup.h>#include <linux/eventfd.h>
struct vmpressure { unsigned long scanned; unsigned long reclaimed;
unsigned long tree_scanned; unsigned long tree_reclaimed; /* The lock is used to keep the scanned/reclaimed above in sync. */ spinlock_t sr_lock;
/* The list of vmpressure_event structs. */ struct list_head events; /* Have to grab the lock on events traversal or modifications. */ struct mutex events_lock;
struct work_struct work;};
struct mem_cgroup;
#ifdef CONFIG_MEMCGvoid vmpressure(gfp_t gfp, int order, struct mem_cgroup *memcg, bool tree, unsigned long scanned, unsigned long reclaimed);extern void vmpressure_prio(gfp_t gfp, struct mem_cgroup *memcg, int prio);
extern void vmpressure_init(struct vmpressure *vmpr);extern void vmpressure_cleanup(struct vmpressure *vmpr);extern struct vmpressure *memcg_to_vmpressure(struct mem_cgroup *memcg);extern struct mem_cgroup *vmpressure_to_memcg(struct vmpressure *vmpr);extern int vmpressure_register_event(struct mem_cgroup *memcg, struct eventfd_ctx *eventfd, const char *args);extern void vmpressure_unregister_event(struct mem_cgroup *memcg, struct eventfd_ctx *eventfd);#elsestatic inline void vmpressure(gfp_t gfp, int order, struct mem_cgroup *memcg, bool tree, unsigned long scanned, unsigned long reclaimed) {}static inline void vmpressure_prio(gfp_t gfp, struct mem_cgroup *memcg, int prio) {}#endif /* CONFIG_MEMCG */#endif /* __LINUX_VMPRESSURE_H */