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| author | MengEn Sun <mengensun@tencent.com> | 2024-11-01 12:06:38 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-12-09 10:33:05 +0100 |
| commit | f8cca70b0e5741b4014cfd11e4346b271267f784 (patch) | |
| tree | 6afe4ee0ffd9be9331ead9e3084904d26876cc88 | |
| parent | 8a92dc4df89c50bdb26667419ea70e0abbce456e (diff) | |
| download | linux-f8cca70b0e5741b4014cfd11e4346b271267f784.tar.gz linux-f8cca70b0e5741b4014cfd11e4346b271267f784.tar.bz2 linux-f8cca70b0e5741b4014cfd11e4346b271267f784.zip | |
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>
| -rw-r--r-- | mm/vmstat.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/vmstat.c b/mm/vmstat.c index e9616c4ca12d..57891697846b 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -1723,6 +1723,7 @@ 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)); |