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memcg-v1: remove charge move code

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The memcg-v1 charge move feature has been deprecated completely and let's
remove the relevant code as well.

Link: https://lkml.kernel.org/r/20241025012304.2473312-3-shakeel.butt@linux.dev
Signed-off-by: Shakeel Butt <shakeel.butt@linux.dev>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Roman Gushchin <roman.gushchin@linux.dev>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Yosry Ahmed <yosryahmed@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Shakeel Butt
2024-11-06 20:11:18 -08:00
committed by Andrew Morton
parent aa6b4fdf59
commit 6b611388b6
4 changed files with 0 additions and 907 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/linux/memcontrol.h
-5
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@@ -299,11 +299,6 @@ struct mem_cgroup {
/* For oom notifier event fd */
struct list_head oom_notify;
/*
* Should we move charges of a task when a task is moved into this
* mem_cgroup ? And what type of charges should we move ?
*/
unsigned long move_charge_at_immigrate;
/* taken only while moving_account > 0 */
spinlock_t move_lock;
unsigned long move_lock_flags;
mm/memcontrol-v1.c
-887
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File diff suppressed because it is too large Load Diff
mm/memcontrol-v1.h
-6
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@@ -80,12 +80,7 @@ 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 */
@@ -130,7 +125,6 @@ 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 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; }
mm/memcontrol.c
-9
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@@ -2242,12 +2242,6 @@ retry:
*/
if (nr_reclaimed && nr_pages <= (1 << PAGE_ALLOC_COSTLY_ORDER))
goto retry;
/*
* At task move, charge accounts can be doubly counted. So, it's
* better to wait until the end of task_move if something is going on.
*/
if (memcg1_wait_acct_move(mem_over_limit))
goto retry;
if (nr_retries--)
goto retry;
@@ -4441,9 +4435,6 @@ struct cgroup_subsys memory_cgrp_subsys = {
.exit = mem_cgroup_exit,
.dfl_cftypes = memory_files,
#ifdef CONFIG_MEMCG_V1
.can_attach = memcg1_can_attach,
.cancel_attach = memcg1_cancel_attach,
.post_attach = memcg1_move_task,
.legacy_cftypes = mem_cgroup_legacy_files,
#endif
.early_init = 0,