linux-kernel - [RFC PATCH 16/20] mm: Allocate kswapd on its node

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Message-ID: <20240726215701.19459-17-frederic@kernel.org>
Date: Fri, 26 Jul 2024 23:56:52 +0200
From: Frederic Weisbecker <frederic@...nel.org>
To: LKML <linux-kernel@...r.kernel.org>
Cc: Frederic Weisbecker <frederic@...nel.org>,
	Michal Hocko <mhocko@...nel.org>,
	Vlastimil Babka <vbabka@...e.cz>,
	linux-mm@...ck.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: [RFC PATCH 16/20] mm: Allocate kswapd on its node

kswapd runs preferrably on a specific node. Allocate its task
structure accordingly for better memory locality.

Signed-off-by: Frederic Weisbecker <frederic@...nel.org>
---
 mm/vmscan.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/vmscan.c b/mm/vmscan.c
index 94359a893b4f..adf8c1e7e89d 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -7284,7 +7284,7 @@ void __meminit kswapd_run(int nid)
 
 	pgdat_kswapd_lock(pgdat);
 	if (!pgdat->kswapd) {
-		pgdat->kswapd = kthread_create(kswapd, pgdat, "kswapd%d", nid);
+		pgdat->kswapd = kthread_create_on_node(kswapd, pgdat, nid, "kswapd%d", nid);
 		if (IS_ERR(pgdat->kswapd)) {
 			/* failure at boot is fatal */
 			pr_err("Failed to start kswapd on node %d，ret=%ld\n",
-- 
2.45.2