vmstat: call fold_vm_zone_numa_events() before show per zone NUMA event
commit 2ea80b039b9af0b71c00378523b71c254fb99c23 upstream. Since 5.14-rc1, NUMA events will only be folded from per-CPU statistics to per zone and global statistics when the user actually needs it. Currently, the kernel has performs the fold operation when reading /proc/vmstat, but does not perform the fold operation in /proc/zoneinfo. This can lead to inaccuracies in the following statistics in zoneinfo: - numa_hit - numa_miss - numa_foreign - numa_interleave - numa_local - numa_other Therefore, before printing per-zone vm_numa_event when reading /proc/zoneinfo, we should also perform the fold operation. Link: https://lkml.kernel.org/r/1730433998-10461-1-git-send-email-mengensun@tencent.com Fixes: f19298b9516c ("mm/vmstat: convert NUMA statistics to basic NUMA counters") Signed-off-by: MengEn Sun <mengensun@tencent.com> Reviewed-by: JinLiang Zheng <alexjlzheng@tencent.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -1711,6 +1711,7 @@ static void zoneinfo_show_print(struct seq_file *m, pg_data_t *pgdat,
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zone_page_state(zone, i));
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zone_page_state(zone, i));
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#ifdef CONFIG_NUMA
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#ifdef CONFIG_NUMA
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fold_vm_zone_numa_events(zone);
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for (i = 0; i < NR_VM_NUMA_EVENT_ITEMS; i++)
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for (i = 0; i < NR_VM_NUMA_EVENT_ITEMS; i++)
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seq_printf(m, "\n %-12s %lu", numa_stat_name(i),
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seq_printf(m, "\n %-12s %lu", numa_stat_name(i),
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zone_numa_event_state(zone, i));
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zone_numa_event_state(zone, i));
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