linux-kernel - [PATCH 3/5] mm: compaction: Count the migration scanned pages events for proactive compaction

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Date:   Tue, 10 Jan 2023 21:36:20 +0800
From:   Baolin Wang <baolin.wang@...ux.alibaba.com>
To:     akpm@...ux-foundation.org
Cc:     baolin.wang@...ux.alibaba.com, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 3/5] mm: compaction: Count the migration scanned pages events for proactive compaction

The proactive compaction will reuse per-node kcompactd threads, so we
should also count the KCOMPACTD_MIGRATE_SCANNED and KCOMPACTD_FREE_SCANNED
events for proactive compaction.

Signed-off-by: Baolin Wang <baolin.wang@...ux.alibaba.com>
---
 mm/compaction.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/mm/compaction.c b/mm/compaction.c
index f8e8addc8664..62f6bb68c9cb 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -2659,6 +2659,11 @@ static void proactive_compact_node(pg_data_t *pgdat)
 		cc.zone = zone;
 
 		compact_zone(&cc, NULL);
+
+		count_compact_events(KCOMPACTD_MIGRATE_SCANNED,
+				     cc.total_migrate_scanned);
+		count_compact_events(KCOMPACTD_FREE_SCANNED,
+				     cc.total_free_scanned);
 	}
 }
 
-- 
2.27.0