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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2018-2020 Oplus. All rights reserved.
*/
#ifndef __PROCESS_MM_RECLAIM_H__
#define __PROCESS_MM_RECLAIM_H__
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/proc_fs.h>
#include <linux/version.h>
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5,4,0)
#include <linux/pagewalk.h>
#endif
#define PR_PASS 0
#define PR_SEM_OUT 1
#define PR_TASK_FG 2
#define PR_TIME_OUT 3
#define PR_ADDR_OVER 4
#define PR_FULL 5
#define PR_TASK_RUN 6
#define PR_TASK_DIE 7
#define RECLAIM_TIMEOUT_JIFFIES (HZ/3)
#define RECLAIM_PAGE_NUM 1024ul
#ifndef CONFIG_OPLUS_SYSTEM_KERNEL_QCOM
/*
* qualcomm has define the sturct in mm.h,
* mtk do not define it, used for transfer param during scan pages.
*/
struct reclaim_param {
struct vm_area_struct *vma;
/* Number of pages scanned */
int nr_scanned;
/* max pages to reclaim */
int nr_to_reclaim;
/* pages reclaimed */
int nr_reclaimed;
/*
* flag that relcaim inactive pages only
*/
bool inactive_lru;
/*
* the target reclaimed process
*/
struct task_struct *reclaimed_task;
};
#endif
extern int is_reclaim_should_cancel(struct mm_walk *walk);
extern int is_reclaim_addr_over(struct mm_walk *walk, unsigned long addr);
extern int __weak create_process_reclaim_enable_proc(struct proc_dir_entry *parent);
#endif /* __PROCESS_MM_RECLAIM_H__ */
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