mirror of
https://github.com/torvalds/linux.git
synced 2025-04-09 14:45:27 +00:00
cb44821e1f
The do_memsw_account() is used to enable or disable legacy memory+swap accounting in memory cgroup. However with disabled CONFIG_MEMCG_V1, we don't need to keep checking it. So, let's always return false for !CONFIG_MEMCG_V1 configs. Before the patch: $ size mm/memcontrol.o text data bss dec hex filename 49928 10736 4172 64836 fd44 mm/memcontrol.o After the patch: $ size mm/memcontrol.o text data bss dec hex filename 49430 10480 4172 64082 fa52 mm/memcontrol.o Link: https://lkml.kernel.org/r/20250312222552.3284173-1-shakeel.butt@linux.dev Signed-off-by: Shakeel Butt <shakeel.butt@linux.dev> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Muchun Song <muchun.song@linux.dev> Cc: Roman Gushchin <roman.gushchin@linux.dev> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
128 lines
4.5 KiB
C
128 lines
4.5 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 */
|
|
|
|
/*
|
|
* 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))
|
|
|
|
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_page_state_output(struct mem_cgroup *memcg, int item);
|
|
int memory_stat_show(struct seq_file *m, void *v);
|
|
|
|
void mem_cgroup_id_get_many(struct mem_cgroup *memcg, unsigned int n);
|
|
struct mem_cgroup *mem_cgroup_id_get_online(struct mem_cgroup *memcg);
|
|
|
|
/* Cgroup v1-specific declarations */
|
|
#ifdef CONFIG_MEMCG_V1
|
|
|
|
/* Whether legacy memory+swap accounting is active */
|
|
static inline bool do_memsw_account(void)
|
|
{
|
|
return !cgroup_subsys_on_dfl(memory_cgrp_subsys);
|
|
}
|
|
|
|
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_local_output(struct mem_cgroup *memcg, int item);
|
|
bool memcg1_alloc_events(struct mem_cgroup *memcg);
|
|
void memcg1_free_events(struct mem_cgroup *memcg);
|
|
|
|
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);
|
|
}
|
|
|
|
struct cgroup_taskset;
|
|
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_commit_charge(struct folio *folio, struct mem_cgroup *memcg);
|
|
void memcg1_uncharge_batch(struct mem_cgroup *memcg, unsigned long pgpgout,
|
|
unsigned long nr_memory, 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 bool do_memsw_account(void) { return false; }
|
|
static inline bool memcg1_alloc_events(struct mem_cgroup *memcg) { return true; }
|
|
static inline void memcg1_free_events(struct mem_cgroup *memcg) {}
|
|
|
|
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 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_commit_charge(struct folio *folio,
|
|
struct mem_cgroup *memcg) {}
|
|
|
|
static inline void memcg1_uncharge_batch(struct mem_cgroup *memcg,
|
|
unsigned long pgpgout,
|
|
unsigned long nr_memory, 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) {}
|
|
|
|
#endif /* CONFIG_MEMCG_V1 */
|
|
|
|
#endif /* __MM_MEMCONTROL_V1_H */
|