mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-14 06:24:53 +08:00
b5855a26de
Gather all memcg1-specific struct mem_cgroup's members initialization in a new memcg1_memcg_init() function, defined in mm/memcontrol-v1.c. Obviously, if CONFIG_MEMCG_V1 is not set, there is no need to initialize these fields, so the function becomes trivial. Link: https://lkml.kernel.org/r/20240628210317.272856-5-roman.gushchin@linux.dev Signed-off-by: Roman Gushchin <roman.gushchin@linux.dev> Acked-by: Shakeel Butt <shakeel.butt@linux.dev> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Muchun Song <muchun.song@linux.dev> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
148 lines
5.1 KiB
C
148 lines
5.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
|
|
#ifndef __MM_MEMCONTROL_V1_H
|
|
#define __MM_MEMCONTROL_V1_H
|
|
|
|
#include <linux/cgroup-defs.h>
|
|
|
|
/* Cgroup v1 and v2 common declarations */
|
|
|
|
void mem_cgroup_charge_statistics(struct mem_cgroup *memcg, int nr_pages);
|
|
int try_charge_memcg(struct mem_cgroup *memcg, gfp_t gfp_mask,
|
|
unsigned int nr_pages);
|
|
|
|
static inline int try_charge(struct mem_cgroup *memcg, gfp_t gfp_mask,
|
|
unsigned int nr_pages)
|
|
{
|
|
if (mem_cgroup_is_root(memcg))
|
|
return 0;
|
|
|
|
return try_charge_memcg(memcg, gfp_mask, nr_pages);
|
|
}
|
|
|
|
void mem_cgroup_id_get_many(struct mem_cgroup *memcg, unsigned int n);
|
|
void mem_cgroup_id_put_many(struct mem_cgroup *memcg, unsigned int n);
|
|
|
|
/*
|
|
* Iteration constructs for visiting all cgroups (under a tree). If
|
|
* loops are exited prematurely (break), mem_cgroup_iter_break() must
|
|
* be used for reference counting.
|
|
*/
|
|
#define for_each_mem_cgroup_tree(iter, root) \
|
|
for (iter = mem_cgroup_iter(root, NULL, NULL); \
|
|
iter != NULL; \
|
|
iter = mem_cgroup_iter(root, iter, NULL))
|
|
|
|
#define for_each_mem_cgroup(iter) \
|
|
for (iter = mem_cgroup_iter(NULL, NULL, NULL); \
|
|
iter != NULL; \
|
|
iter = mem_cgroup_iter(NULL, iter, NULL))
|
|
|
|
/* Whether legacy memory+swap accounting is active */
|
|
static bool do_memsw_account(void)
|
|
{
|
|
return !cgroup_subsys_on_dfl(memory_cgrp_subsys);
|
|
}
|
|
|
|
/*
|
|
* Per memcg event counter is incremented at every pagein/pageout. With THP,
|
|
* it will be incremented by the number of pages. This counter is used
|
|
* to trigger some periodic events. This is straightforward and better
|
|
* than using jiffies etc. to handle periodic memcg event.
|
|
*/
|
|
enum mem_cgroup_events_target {
|
|
MEM_CGROUP_TARGET_THRESH,
|
|
MEM_CGROUP_TARGET_SOFTLIMIT,
|
|
MEM_CGROUP_NTARGETS,
|
|
};
|
|
|
|
bool mem_cgroup_event_ratelimit(struct mem_cgroup *memcg,
|
|
enum mem_cgroup_events_target target);
|
|
unsigned long mem_cgroup_usage(struct mem_cgroup *memcg, bool swap);
|
|
|
|
void drain_all_stock(struct mem_cgroup *root_memcg);
|
|
|
|
unsigned long memcg_events(struct mem_cgroup *memcg, int event);
|
|
unsigned long memcg_events_local(struct mem_cgroup *memcg, int event);
|
|
unsigned long memcg_page_state_local(struct mem_cgroup *memcg, int idx);
|
|
unsigned long memcg_page_state_output(struct mem_cgroup *memcg, int item);
|
|
unsigned long memcg_page_state_local_output(struct mem_cgroup *memcg, int item);
|
|
int memory_stat_show(struct seq_file *m, void *v);
|
|
|
|
/* Cgroup v1-specific declarations */
|
|
#ifdef CONFIG_MEMCG_V1
|
|
void memcg1_memcg_init(struct mem_cgroup *memcg);
|
|
void memcg1_remove_from_trees(struct mem_cgroup *memcg);
|
|
|
|
static inline void memcg1_soft_limit_reset(struct mem_cgroup *memcg)
|
|
{
|
|
WRITE_ONCE(memcg->soft_limit, PAGE_COUNTER_MAX);
|
|
}
|
|
|
|
bool memcg1_wait_acct_move(struct mem_cgroup *memcg);
|
|
|
|
struct cgroup_taskset;
|
|
int memcg1_can_attach(struct cgroup_taskset *tset);
|
|
void memcg1_cancel_attach(struct cgroup_taskset *tset);
|
|
void memcg1_move_task(void);
|
|
void memcg1_css_offline(struct mem_cgroup *memcg);
|
|
|
|
/* for encoding cft->private value on file */
|
|
enum res_type {
|
|
_MEM,
|
|
_MEMSWAP,
|
|
_KMEM,
|
|
_TCP,
|
|
};
|
|
|
|
bool memcg1_oom_prepare(struct mem_cgroup *memcg, bool *locked);
|
|
void memcg1_oom_finish(struct mem_cgroup *memcg, bool locked);
|
|
void memcg1_oom_recover(struct mem_cgroup *memcg);
|
|
|
|
void memcg1_check_events(struct mem_cgroup *memcg, int nid);
|
|
|
|
void memcg1_stat_format(struct mem_cgroup *memcg, struct seq_buf *s);
|
|
|
|
void memcg1_account_kmem(struct mem_cgroup *memcg, int nr_pages);
|
|
static inline bool memcg1_tcpmem_active(struct mem_cgroup *memcg)
|
|
{
|
|
return memcg->tcpmem_active;
|
|
}
|
|
bool memcg1_charge_skmem(struct mem_cgroup *memcg, unsigned int nr_pages,
|
|
gfp_t gfp_mask);
|
|
static inline void memcg1_uncharge_skmem(struct mem_cgroup *memcg, unsigned int nr_pages)
|
|
{
|
|
page_counter_uncharge(&memcg->tcpmem, nr_pages);
|
|
}
|
|
|
|
extern struct cftype memsw_files[];
|
|
extern struct cftype mem_cgroup_legacy_files[];
|
|
|
|
#else /* CONFIG_MEMCG_V1 */
|
|
|
|
static inline void memcg1_memcg_init(struct mem_cgroup *memcg) {}
|
|
static inline void memcg1_remove_from_trees(struct mem_cgroup *memcg) {}
|
|
static inline void memcg1_soft_limit_reset(struct mem_cgroup *memcg) {}
|
|
static inline bool memcg1_wait_acct_move(struct mem_cgroup *memcg) { return false; }
|
|
static inline void memcg1_css_offline(struct mem_cgroup *memcg) {}
|
|
|
|
static inline bool memcg1_oom_prepare(struct mem_cgroup *memcg, bool *locked) { return true; }
|
|
static inline void memcg1_oom_finish(struct mem_cgroup *memcg, bool locked) {}
|
|
static inline void memcg1_oom_recover(struct mem_cgroup *memcg) {}
|
|
|
|
static inline void memcg1_check_events(struct mem_cgroup *memcg, int nid) {}
|
|
|
|
static inline void memcg1_stat_format(struct mem_cgroup *memcg, struct seq_buf *s) {}
|
|
|
|
static inline void memcg1_account_kmem(struct mem_cgroup *memcg, int nr_pages) {}
|
|
static inline bool memcg1_tcpmem_active(struct mem_cgroup *memcg) { return false; }
|
|
static inline bool memcg1_charge_skmem(struct mem_cgroup *memcg, unsigned int nr_pages,
|
|
gfp_t gfp_mask) { return true; }
|
|
static inline void memcg1_uncharge_skmem(struct mem_cgroup *memcg, unsigned int nr_pages) {}
|
|
|
|
extern struct cftype memsw_files[];
|
|
extern struct cftype mem_cgroup_legacy_files[];
|
|
#endif /* CONFIG_MEMCG_V1 */
|
|
|
|
#endif /* __MM_MEMCONTROL_V1_H */
|