mirror of
https://github.com/hardkernel/kernel_common_drivers.git
synced 2026-06-25 12:03:48 +09:00
Jianxiong Pan
2271989942
PD#SWPL-95400 Problem: If we pin a file in android, the whole data of this file will be loaded to DDR, but most of these data may not be used, this caused memory waste. Solution: delay mark mlocked flags for unevictable pages until it has been faulted. You can use following command to disable this function: echo 0 > /proc/sys/vm/shrink_unevictable Verify: sc2_ah212. Change-Id: I3981b36114ab331c558198b80140aaa91fe7e7df Signed-off-by: Jianxiong Pan <jianxiong.pan@amlogic.com>
36 lines
946 B
C
36 lines
946 B
C
/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */
|
|
/*
|
|
* Copyright (c) 2019 Amlogic, Inc. All rights reserved.
|
|
*/
|
|
|
|
#ifndef __PIN_FILE_H__
|
|
#define __PIN_FILE_H__
|
|
|
|
struct aml_pin_file {
|
|
spinlock_t pin_file_lock; /* for address space */
|
|
unsigned int start_bit;
|
|
int cached_pages;
|
|
struct vm_struct *root_vm;
|
|
unsigned long *bitmap;
|
|
struct list_head list;
|
|
spinlock_t page_lock; /* for cached pages */
|
|
};
|
|
|
|
/* the macro must large than enum mapping_flags in include/linux/pagemap.h */
|
|
#define AS_LOCK_MAPPING 10
|
|
|
|
struct page *aml_mlock_page_as_lock_mapping(struct vm_area_struct *vma,
|
|
struct mm_struct *mm, struct vm_fault *vmf, unsigned long address);
|
|
|
|
void reset_page_vma_flags(struct vm_area_struct *vma, vm_flags_t flags);
|
|
|
|
int aml_is_pin_locked_file(struct page *page);
|
|
|
|
void aml_set_pin_locked_file(struct page *page);
|
|
|
|
void aml_clear_pin_locked_file(struct page *page);
|
|
|
|
extern int sysctrl_shrink_unevictable;
|
|
|
|
#endif /* __PIN_FILE_H__ */
|