The patch titled
Subject: memcg: move mem_cgroup_event_ratelimit to v1 code
has been added to the -mm mm-unstable branch. Its filename is
memcg-move-mem_cgroup_event_ratelimit-to-v1-code.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/memcg-move-mem_cgroup_event_ratelimit-to-v1-code.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Shakeel Butt <shakeel.butt@xxxxxxxxx>
Subject: memcg: move mem_cgroup_event_ratelimit to v1 code
Date: Wed, 14 Aug 2024 22:04:48 -0700
There are no callers of mem_cgroup_event_ratelimit() in the v2 code. Move
it to v1 only code and rename it to memcg1_event_ratelimit().
Link: https://lkml.kernel.org/r/20240815050453.1298138-3-shakeel.butt@xxxxxxxxx
Signed-off-by: Shakeel Butt <shakeel.butt@xxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: Muchun Song <muchun.song@xxxxxxxxx>
Cc: Roman Gushchin <roman.gushchin@xxxxxxxxx>
Cc: T.J. Mercier <tjmercier@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memcontrol-v1.c | 32 ++++++++++++++++++++++++++++++--
mm/memcontrol-v1.h | 2 --
mm/memcontrol.c | 28 ----------------------------
3 files changed, 30 insertions(+), 32 deletions(-)
--- a/mm/memcontrol.c~memcg-move-mem_cgroup_event_ratelimit-to-v1-code
+++ a/mm/memcontrol.c
@@ -95,9 +95,6 @@ static bool cgroup_memory_nobpf __ro_aft
static DECLARE_WAIT_QUEUE_HEAD(memcg_cgwb_frn_waitq);
#endif
-#define THRESHOLDS_EVENTS_TARGET 128
-#define SOFTLIMIT_EVENTS_TARGET 1024
-
static inline bool task_is_dying(void)
{
return tsk_is_oom_victim(current) || fatal_signal_pending(current) ||
@@ -867,31 +864,6 @@ void mem_cgroup_charge_statistics(struct
__this_cpu_add(memcg->events_percpu->nr_page_events, nr_pages);
}
-bool mem_cgroup_event_ratelimit(struct mem_cgroup *memcg,
- enum mem_cgroup_events_target target)
-{
- unsigned long val, next;
-
- val = __this_cpu_read(memcg->events_percpu->nr_page_events);
- next = __this_cpu_read(memcg->events_percpu->targets[target]);
- /* from time_after() in jiffies.h */
- if ((long)(next - val) < 0) {
- switch (target) {
- case MEM_CGROUP_TARGET_THRESH:
- next = val + THRESHOLDS_EVENTS_TARGET;
- break;
- case MEM_CGROUP_TARGET_SOFTLIMIT:
- next = val + SOFTLIMIT_EVENTS_TARGET;
- break;
- default:
- break;
- }
- __this_cpu_write(memcg->events_percpu->targets[target], next);
- return true;
- }
- return false;
-}
-
struct mem_cgroup *mem_cgroup_from_task(struct task_struct *p)
{
/*
--- a/mm/memcontrol-v1.c~memcg-move-mem_cgroup_event_ratelimit-to-v1-code
+++ a/mm/memcontrol-v1.c
@@ -1439,6 +1439,34 @@ static void mem_cgroup_threshold(struct
}
}
+#define THRESHOLDS_EVENTS_TARGET 128
+#define SOFTLIMIT_EVENTS_TARGET 1024
+
+static bool memcg1_event_ratelimit(struct mem_cgroup *memcg,
+ enum mem_cgroup_events_target target)
+{
+ unsigned long val, next;
+
+ val = __this_cpu_read(memcg->events_percpu->nr_page_events);
+ next = __this_cpu_read(memcg->events_percpu->targets[target]);
+ /* from time_after() in jiffies.h */
+ if ((long)(next - val) < 0) {
+ switch (target) {
+ case MEM_CGROUP_TARGET_THRESH:
+ next = val + THRESHOLDS_EVENTS_TARGET;
+ break;
+ case MEM_CGROUP_TARGET_SOFTLIMIT:
+ next = val + SOFTLIMIT_EVENTS_TARGET;
+ break;
+ default:
+ break;
+ }
+ __this_cpu_write(memcg->events_percpu->targets[target], next);
+ return true;
+ }
+ return false;
+}
+
/*
* Check events in order.
*
@@ -1449,11 +1477,11 @@ void memcg1_check_events(struct mem_cgro
return;
/* threshold event is triggered in finer grain than soft limit */
- if (unlikely(mem_cgroup_event_ratelimit(memcg,
+ if (unlikely(memcg1_event_ratelimit(memcg,
MEM_CGROUP_TARGET_THRESH))) {
bool do_softlimit;
- do_softlimit = mem_cgroup_event_ratelimit(memcg,
+ do_softlimit = memcg1_event_ratelimit(memcg,
MEM_CGROUP_TARGET_SOFTLIMIT);
mem_cgroup_threshold(memcg);
if (unlikely(do_softlimit))
--- a/mm/memcontrol-v1.h~memcg-move-mem_cgroup_event_ratelimit-to-v1-code
+++ a/mm/memcontrol-v1.h
@@ -62,8 +62,6 @@ struct memcg1_events_percpu {
unsigned long targets[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);
_
Patches currently in -mm which might be from shakeel.butt@xxxxxxxxx are
memcg-increase-the-valid-index-range-for-memcg-stats.patch
memcg-replace-memcg-id-idr-with-xarray.patch
memcg-replace-memcg-id-idr-with-xarray-v2.patch
memcg-use-ratelimited-stats-flush-in-the-reclaim.patch
memcg-move-v1-only-percpu-stats-in-separate-struct.patch
memcg-move-mem_cgroup_event_ratelimit-to-v1-code.patch
memcg-move-mem_cgroup_charge_statistics-to-v1-code.patch
memcg-move-v1-events-and-statistics-code-to-v1-file.patch
memcg-make-v1-only-functions-static.patch
memcg-allocate-v1-event-percpu-only-on-v1-deployment.patch
memcg-make-pgpgin-and-pgpgout-v1-only.patch
