diff options
| author | Roman Gushchin <roman.gushchin@linux.dev> | 2024-06-25 02:58:56 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-07-05 03:05:52 +0200 |
| commit | e548ad4a7cbf765f3ab74f6aa1aecc2df390a0b2 (patch) | |
| tree | 547602edf07d8c01fc4519b7978690393b2c5e10 /mm/memcontrol-v1.h | |
| parent | mm: memcg: rename soft limit reclaim-related functions (diff) | |
| download | linux-e548ad4a7cbf765f3ab74f6aa1aecc2df390a0b2.tar.xz linux-e548ad4a7cbf765f3ab74f6aa1aecc2df390a0b2.zip | |
mm: memcg: move charge migration code to memcontrol-v1.c
Unlike the legacy cgroup v1 memory controller, cgroup v2 memory controller
doesn't support moving charged pages between cgroups.
It's a fairly large and complicated code which created a number of
problems in the past. Let's move this code into memcontrol-v1.c. It
shaves off 1k lines from memcontrol.c. It's also another step towards
making the legacy memory controller code optionally compiled.
Link: https://lkml.kernel.org/r/20240625005906.106920-5-roman.gushchin@linux.dev
Signed-off-by: Roman Gushchin <roman.gushchin@linux.dev>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Muchun Song <muchun.song@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/memcontrol-v1.h')
| -rw-r--r-- | mm/memcontrol-v1.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/mm/memcontrol-v1.h b/mm/memcontrol-v1.h index e37bc7e8d955..55e7c4f90c39 100644 --- a/mm/memcontrol-v1.h +++ b/mm/memcontrol-v1.h @@ -11,4 +11,34 @@ static inline void memcg1_soft_limit_reset(struct mem_cgroup *memcg) WRITE_ONCE(memcg->soft_limit, PAGE_COUNTER_MAX); } +void mem_cgroup_charge_statistics(struct mem_cgroup *memcg, int nr_pages); +void memcg_check_events(struct mem_cgroup *memcg, int nid); +void memcg_oom_recover(struct mem_cgroup *memcg); +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); + +bool mem_cgroup_wait_acct_move(struct mem_cgroup *memcg); +struct cgroup_taskset; +int mem_cgroup_can_attach(struct cgroup_taskset *tset); +void mem_cgroup_cancel_attach(struct cgroup_taskset *tset); +void mem_cgroup_move_task(void); + +struct cftype; +u64 mem_cgroup_move_charge_read(struct cgroup_subsys_state *css, + struct cftype *cft); +int mem_cgroup_move_charge_write(struct cgroup_subsys_state *css, + struct cftype *cft, u64 val); + #endif /* __MM_MEMCONTROL_V1_H */ |