linux-kernel - [PATCH] vmstat: call fold_vm_zone_numa_events() before show per zone NUMA event

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Message-Id: <1730277457-22725-1-git-send-email-mengensun@tencent.com>
Date: Wed, 30 Oct 2024 16:37:37 +0800
From: mengensun88@...il.com
To: akpm@...ux-foundation.org
Cc: linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	alexjlzheng@...cent.com,
	MengEn Sun <mengensun@...cent.com>
Subject: [PATCH] vmstat: call fold_vm_zone_numa_events() before show per zone NUMA event

From: MengEn Sun <mengensun@...cent.com>

NUMA events will only be folded from per-CPU statistics to per
zone and global statistics when the user actually needs it.

So, we perform this folding when reading the /proc/zoneinfo

Fixes: f19298b9516c ("mm/vmstat: convert NUMA statistics to basic NUMA counters")
Reviewed-by: JinLiang Zheng <alexjlzheng@...cent.com>
Signed-off-by: MengEn Sun <mengensun@...cent.com>
---
 mm/vmstat.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mm/vmstat.c b/mm/vmstat.c
index b5a4cea..2770800 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -1778,6 +1778,7 @@ static void zoneinfo_show_print(struct seq_file *m, pg_data_t *pgdat,
 			   zone_page_state(zone, i));
 
 #ifdef CONFIG_NUMA
+	fold_vm_zone_numa_events(zone);
 	for (i = 0; i < NR_VM_NUMA_EVENT_ITEMS; i++)
 		seq_printf(m, "\n      %-12s %lu", numa_stat_name(i),
 			   zone_numa_event_state(zone, i));
-- 
1.8.3.1