386 строки
9.9 KiB
C
386 строки
9.9 KiB
C
/* memcontrol.h - Memory Controller
|
|
*
|
|
* Copyright IBM Corporation, 2007
|
|
* Author Balbir Singh <balbir@linux.vnet.ibm.com>
|
|
*
|
|
* Copyright 2007 OpenVZ SWsoft Inc
|
|
* Author: Pavel Emelianov <xemul@openvz.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*/
|
|
|
|
#ifndef _LINUX_MEMCONTROL_H
|
|
#define _LINUX_MEMCONTROL_H
|
|
#include <linux/cgroup.h>
|
|
#include <linux/vm_event_item.h>
|
|
|
|
struct mem_cgroup;
|
|
struct page_cgroup;
|
|
struct page;
|
|
struct mm_struct;
|
|
|
|
/* Stats that can be updated by kernel. */
|
|
enum mem_cgroup_page_stat_item {
|
|
MEMCG_NR_FILE_MAPPED, /* # of pages charged as file rss */
|
|
};
|
|
|
|
extern unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan,
|
|
struct list_head *dst,
|
|
unsigned long *scanned, int order,
|
|
isolate_mode_t mode,
|
|
struct zone *z,
|
|
struct mem_cgroup *mem_cont,
|
|
int active, int file);
|
|
|
|
#ifdef CONFIG_CGROUP_MEM_RES_CTLR
|
|
/*
|
|
* All "charge" functions with gfp_mask should use GFP_KERNEL or
|
|
* (gfp_mask & GFP_RECLAIM_MASK). In current implementatin, memcg doesn't
|
|
* alloc memory but reclaims memory from all available zones. So, "where I want
|
|
* memory from" bits of gfp_mask has no meaning. So any bits of that field is
|
|
* available but adding a rule is better. charge functions' gfp_mask should
|
|
* be set to GFP_KERNEL or gfp_mask & GFP_RECLAIM_MASK for avoiding ambiguous
|
|
* codes.
|
|
* (Of course, if memcg does memory allocation in future, GFP_KERNEL is sane.)
|
|
*/
|
|
|
|
extern int mem_cgroup_newpage_charge(struct page *page, struct mm_struct *mm,
|
|
gfp_t gfp_mask);
|
|
/* for swap handling */
|
|
extern int mem_cgroup_try_charge_swapin(struct mm_struct *mm,
|
|
struct page *page, gfp_t mask, struct mem_cgroup **ptr);
|
|
extern void mem_cgroup_commit_charge_swapin(struct page *page,
|
|
struct mem_cgroup *ptr);
|
|
extern void mem_cgroup_cancel_charge_swapin(struct mem_cgroup *ptr);
|
|
|
|
extern int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm,
|
|
gfp_t gfp_mask);
|
|
extern void mem_cgroup_add_lru_list(struct page *page, enum lru_list lru);
|
|
extern void mem_cgroup_del_lru_list(struct page *page, enum lru_list lru);
|
|
extern void mem_cgroup_rotate_reclaimable_page(struct page *page);
|
|
extern void mem_cgroup_rotate_lru_list(struct page *page, enum lru_list lru);
|
|
extern void mem_cgroup_del_lru(struct page *page);
|
|
extern void mem_cgroup_move_lists(struct page *page,
|
|
enum lru_list from, enum lru_list to);
|
|
|
|
/* For coalescing uncharge for reducing memcg' overhead*/
|
|
extern void mem_cgroup_uncharge_start(void);
|
|
extern void mem_cgroup_uncharge_end(void);
|
|
|
|
extern void mem_cgroup_uncharge_page(struct page *page);
|
|
extern void mem_cgroup_uncharge_cache_page(struct page *page);
|
|
|
|
extern void mem_cgroup_out_of_memory(struct mem_cgroup *memcg, gfp_t gfp_mask);
|
|
int task_in_mem_cgroup(struct task_struct *task, const struct mem_cgroup *memcg);
|
|
|
|
extern struct mem_cgroup *try_get_mem_cgroup_from_page(struct page *page);
|
|
extern struct mem_cgroup *mem_cgroup_from_task(struct task_struct *p);
|
|
extern struct mem_cgroup *try_get_mem_cgroup_from_mm(struct mm_struct *mm);
|
|
|
|
static inline
|
|
int mm_match_cgroup(const struct mm_struct *mm, const struct mem_cgroup *cgroup)
|
|
{
|
|
struct mem_cgroup *memcg;
|
|
rcu_read_lock();
|
|
memcg = mem_cgroup_from_task(rcu_dereference((mm)->owner));
|
|
rcu_read_unlock();
|
|
return cgroup == memcg;
|
|
}
|
|
|
|
extern struct cgroup_subsys_state *mem_cgroup_css(struct mem_cgroup *memcg);
|
|
|
|
extern int
|
|
mem_cgroup_prepare_migration(struct page *page,
|
|
struct page *newpage, struct mem_cgroup **ptr, gfp_t gfp_mask);
|
|
extern void mem_cgroup_end_migration(struct mem_cgroup *memcg,
|
|
struct page *oldpage, struct page *newpage, bool migration_ok);
|
|
|
|
/*
|
|
* For memory reclaim.
|
|
*/
|
|
int mem_cgroup_inactive_anon_is_low(struct mem_cgroup *memcg,
|
|
struct zone *zone);
|
|
int mem_cgroup_inactive_file_is_low(struct mem_cgroup *memcg,
|
|
struct zone *zone);
|
|
int mem_cgroup_select_victim_node(struct mem_cgroup *memcg);
|
|
unsigned long mem_cgroup_zone_nr_lru_pages(struct mem_cgroup *memcg,
|
|
int nid, int zid, unsigned int lrumask);
|
|
struct zone_reclaim_stat *mem_cgroup_get_reclaim_stat(struct mem_cgroup *memcg,
|
|
struct zone *zone);
|
|
struct zone_reclaim_stat*
|
|
mem_cgroup_get_reclaim_stat_from_page(struct page *page);
|
|
extern void mem_cgroup_print_oom_info(struct mem_cgroup *memcg,
|
|
struct task_struct *p);
|
|
|
|
#ifdef CONFIG_CGROUP_MEM_RES_CTLR_SWAP
|
|
extern int do_swap_account;
|
|
#endif
|
|
|
|
static inline bool mem_cgroup_disabled(void)
|
|
{
|
|
if (mem_cgroup_subsys.disabled)
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
void mem_cgroup_update_page_stat(struct page *page,
|
|
enum mem_cgroup_page_stat_item idx,
|
|
int val);
|
|
|
|
static inline void mem_cgroup_inc_page_stat(struct page *page,
|
|
enum mem_cgroup_page_stat_item idx)
|
|
{
|
|
mem_cgroup_update_page_stat(page, idx, 1);
|
|
}
|
|
|
|
static inline void mem_cgroup_dec_page_stat(struct page *page,
|
|
enum mem_cgroup_page_stat_item idx)
|
|
{
|
|
mem_cgroup_update_page_stat(page, idx, -1);
|
|
}
|
|
|
|
unsigned long mem_cgroup_soft_limit_reclaim(struct zone *zone, int order,
|
|
gfp_t gfp_mask,
|
|
unsigned long *total_scanned);
|
|
u64 mem_cgroup_get_limit(struct mem_cgroup *memcg);
|
|
|
|
void mem_cgroup_count_vm_event(struct mm_struct *mm, enum vm_event_item idx);
|
|
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
|
|
void mem_cgroup_split_huge_fixup(struct page *head, struct page *tail);
|
|
#endif
|
|
|
|
#ifdef CONFIG_DEBUG_VM
|
|
bool mem_cgroup_bad_page_check(struct page *page);
|
|
void mem_cgroup_print_bad_page(struct page *page);
|
|
#endif
|
|
#else /* CONFIG_CGROUP_MEM_RES_CTLR */
|
|
struct mem_cgroup;
|
|
|
|
static inline int mem_cgroup_newpage_charge(struct page *page,
|
|
struct mm_struct *mm, gfp_t gfp_mask)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int mem_cgroup_cache_charge(struct page *page,
|
|
struct mm_struct *mm, gfp_t gfp_mask)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int mem_cgroup_try_charge_swapin(struct mm_struct *mm,
|
|
struct page *page, gfp_t gfp_mask, struct mem_cgroup **ptr)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void mem_cgroup_commit_charge_swapin(struct page *page,
|
|
struct mem_cgroup *ptr)
|
|
{
|
|
}
|
|
|
|
static inline void mem_cgroup_cancel_charge_swapin(struct mem_cgroup *ptr)
|
|
{
|
|
}
|
|
|
|
static inline void mem_cgroup_uncharge_start(void)
|
|
{
|
|
}
|
|
|
|
static inline void mem_cgroup_uncharge_end(void)
|
|
{
|
|
}
|
|
|
|
static inline void mem_cgroup_uncharge_page(struct page *page)
|
|
{
|
|
}
|
|
|
|
static inline void mem_cgroup_uncharge_cache_page(struct page *page)
|
|
{
|
|
}
|
|
|
|
static inline void mem_cgroup_add_lru_list(struct page *page, int lru)
|
|
{
|
|
}
|
|
|
|
static inline void mem_cgroup_del_lru_list(struct page *page, int lru)
|
|
{
|
|
return ;
|
|
}
|
|
|
|
static inline void mem_cgroup_rotate_reclaimable_page(struct page *page)
|
|
{
|
|
return ;
|
|
}
|
|
|
|
static inline void mem_cgroup_rotate_lru_list(struct page *page, int lru)
|
|
{
|
|
return ;
|
|
}
|
|
|
|
static inline void mem_cgroup_del_lru(struct page *page)
|
|
{
|
|
return ;
|
|
}
|
|
|
|
static inline void
|
|
mem_cgroup_move_lists(struct page *page, enum lru_list from, enum lru_list to)
|
|
{
|
|
}
|
|
|
|
static inline struct mem_cgroup *try_get_mem_cgroup_from_page(struct page *page)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline struct mem_cgroup *try_get_mem_cgroup_from_mm(struct mm_struct *mm)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline int mm_match_cgroup(struct mm_struct *mm,
|
|
struct mem_cgroup *memcg)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
static inline int task_in_mem_cgroup(struct task_struct *task,
|
|
const struct mem_cgroup *memcg)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
static inline struct cgroup_subsys_state
|
|
*mem_cgroup_css(struct mem_cgroup *memcg)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline int
|
|
mem_cgroup_prepare_migration(struct page *page, struct page *newpage,
|
|
struct mem_cgroup **ptr, gfp_t gfp_mask)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void mem_cgroup_end_migration(struct mem_cgroup *memcg,
|
|
struct page *oldpage, struct page *newpage, bool migration_ok)
|
|
{
|
|
}
|
|
|
|
static inline int mem_cgroup_get_reclaim_priority(struct mem_cgroup *memcg)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void mem_cgroup_note_reclaim_priority(struct mem_cgroup *memcg,
|
|
int priority)
|
|
{
|
|
}
|
|
|
|
static inline void mem_cgroup_record_reclaim_priority(struct mem_cgroup *memcg,
|
|
int priority)
|
|
{
|
|
}
|
|
|
|
static inline bool mem_cgroup_disabled(void)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
static inline int
|
|
mem_cgroup_inactive_anon_is_low(struct mem_cgroup *memcg, struct zone *zone)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
static inline int
|
|
mem_cgroup_inactive_file_is_low(struct mem_cgroup *memcg, struct zone *zone)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
static inline unsigned long
|
|
mem_cgroup_zone_nr_lru_pages(struct mem_cgroup *memcg, int nid, int zid,
|
|
unsigned int lru_mask)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
|
|
static inline struct zone_reclaim_stat*
|
|
mem_cgroup_get_reclaim_stat(struct mem_cgroup *memcg, struct zone *zone)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline struct zone_reclaim_stat*
|
|
mem_cgroup_get_reclaim_stat_from_page(struct page *page)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline void
|
|
mem_cgroup_print_oom_info(struct mem_cgroup *memcg, struct task_struct *p)
|
|
{
|
|
}
|
|
|
|
static inline void mem_cgroup_inc_page_stat(struct page *page,
|
|
enum mem_cgroup_page_stat_item idx)
|
|
{
|
|
}
|
|
|
|
static inline void mem_cgroup_dec_page_stat(struct page *page,
|
|
enum mem_cgroup_page_stat_item idx)
|
|
{
|
|
}
|
|
|
|
static inline
|
|
unsigned long mem_cgroup_soft_limit_reclaim(struct zone *zone, int order,
|
|
gfp_t gfp_mask,
|
|
unsigned long *total_scanned)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline
|
|
u64 mem_cgroup_get_limit(struct mem_cgroup *memcg)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void mem_cgroup_split_huge_fixup(struct page *head,
|
|
struct page *tail)
|
|
{
|
|
}
|
|
|
|
static inline
|
|
void mem_cgroup_count_vm_event(struct mm_struct *mm, enum vm_event_item idx)
|
|
{
|
|
}
|
|
#endif /* CONFIG_CGROUP_MEM_CONT */
|
|
|
|
#if !defined(CONFIG_CGROUP_MEM_RES_CTLR) || !defined(CONFIG_DEBUG_VM)
|
|
static inline bool
|
|
mem_cgroup_bad_page_check(struct page *page)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static inline void
|
|
mem_cgroup_print_bad_page(struct page *page)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#endif /* _LINUX_MEMCONTROL_H */
|
|
|