ef36c60fe7
This commit reverts e799c1b10c54...cfb042c6c5d1 Reason for revert: unblock GKI Bug: 140544941 Test: boot Change-Id: I4ebe6c01918788cdc2468ceabf101ef7c3e3c452 Signed-off-by: Martin Liu <liumartin@google.com>
55 lines
1.7 KiB
C
55 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __LINUX_VMPRESSURE_H
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#define __LINUX_VMPRESSURE_H
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#include <linux/mutex.h>
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#include <linux/list.h>
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#include <linux/workqueue.h>
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#include <linux/gfp.h>
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#include <linux/types.h>
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#include <linux/cgroup.h>
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#include <linux/eventfd.h>
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struct vmpressure {
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unsigned long scanned;
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unsigned long reclaimed;
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unsigned long tree_scanned;
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unsigned long tree_reclaimed;
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/* The lock is used to keep the scanned/reclaimed above in sync. */
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struct spinlock sr_lock;
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/* The list of vmpressure_event structs. */
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struct list_head events;
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/* Have to grab the lock on events traversal or modifications. */
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struct mutex events_lock;
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struct work_struct work;
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};
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struct mem_cgroup;
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extern int vmpressure_notifier_register(struct notifier_block *nb);
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extern int vmpressure_notifier_unregister(struct notifier_block *nb);
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extern void vmpressure(gfp_t gfp, struct mem_cgroup *memcg, bool tree,
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unsigned long scanned, unsigned long reclaimed);
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extern void vmpressure_prio(gfp_t gfp, struct mem_cgroup *memcg, int prio);
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#ifdef CONFIG_MEMCG
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extern void vmpressure_init(struct vmpressure *vmpr);
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extern void vmpressure_cleanup(struct vmpressure *vmpr);
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extern struct vmpressure *memcg_to_vmpressure(struct mem_cgroup *memcg);
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extern struct cgroup_subsys_state *vmpressure_to_css(struct vmpressure *vmpr);
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extern int vmpressure_register_event(struct mem_cgroup *memcg,
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struct eventfd_ctx *eventfd,
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const char *args);
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extern void vmpressure_unregister_event(struct mem_cgroup *memcg,
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struct eventfd_ctx *eventfd);
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#else
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static inline struct vmpressure *memcg_to_vmpressure(struct mem_cgroup *memcg)
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{
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return NULL;
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}
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#endif /* CONFIG_MEMCG */
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#endif /* __LINUX_VMPRESSURE_H */
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