From 219a53f6c84bafd3871afc5b007e777112074e51 Mon Sep 17 00:00:00 2001 From: Guopeng Zhang Date: Mon, 13 Jul 2026 17:00:10 +0800 Subject: [PATCH] mm: memcontrol: drop unused cpu argument from flush_nmi_stats flush_nmi_stats() does not use its cpu argument. Remove it from the function and its !CONFIG_MEMCG_NMI_SAFETY_REQUIRES_ATOMIC stub. The caller still uses cpu for the subsequent per-CPU rstat flush. No functional change. Link: https://lore.kernel.org/20260713090010.2991906-1-guopeng.zhang@linux.dev Signed-off-by: Guopeng Zhang Acked-by: Michal Hocko Acked-by: Johannes Weiner Reviewed-by: Muchun Song Acked-by: Shakeel Butt Cc: Roman Gushchin Signed-off-by: Andrew Morton --- mm/memcontrol.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 02599b8b6bd5..5dc103a98e74 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -4433,8 +4433,7 @@ static void mem_cgroup_stat_aggregate(struct aggregate_control *ac) } #ifdef CONFIG_MEMCG_NMI_SAFETY_REQUIRES_ATOMIC -static void flush_nmi_stats(struct mem_cgroup *memcg, struct mem_cgroup *parent, - int cpu) +static void flush_nmi_stats(struct mem_cgroup *memcg, struct mem_cgroup *parent) { int nid; @@ -4485,8 +4484,7 @@ static void flush_nmi_stats(struct mem_cgroup *memcg, struct mem_cgroup *parent, } } #else -static void flush_nmi_stats(struct mem_cgroup *memcg, struct mem_cgroup *parent, - int cpu) +static void flush_nmi_stats(struct mem_cgroup *memcg, struct mem_cgroup *parent) {} #endif @@ -4498,7 +4496,7 @@ static void mem_cgroup_css_rstat_flush(struct cgroup_subsys_state *css, int cpu) struct aggregate_control ac; int nid; - flush_nmi_stats(memcg, parent, cpu); + flush_nmi_stats(memcg, parent); statc = per_cpu_ptr(memcg->vmstats_percpu, cpu);