linux-kernel - [PATCH v1] sched/numa: init numa_scan_period with sysctl_numa_balancing_scan_period

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Message-Id: <20230512094946.2639893-1-zhaomzhao@126.com>
Date:   Fri, 12 May 2023 05:49:46 -0400
From:   zhaomzhao@....com
To:     mingo@...hat.com, peterz@...radead.org, juri.lelli@...hat.com,
        vincent.guittot@...aro.org, dietmar.eggemann@....com,
        rostedt@...dmis.org, bsegall@...gle.com, mgorman@...e.de,
        bristot@...hat.com, vschneid@...hat.com
Cc:     linux-kernel@...r.kernel.org,
        Zhao Mengmeng <zhaomengmeng@...inos.cn>
Subject: [PATCH v1] sched/numa: init numa_scan_period with sysctl_numa_balancing_scan_period_min

From: Zhao Mengmeng <zhaomengmeng@...inos.cn>

As the name suggests, sysctl_numa_balancing_scan_delay is a "delay"
mainly used by numa_next_scan, it has nothing to do with scan period. So
init numa_scan_period with sysctl_numa_balancing_scan_period_min.

Signed-off-by: Zhao Mengmeng <zhaomengmeng@...inos.cn>
---
 kernel/sched/fair.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 373ff5f55884..9b7d4f3a3d50 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -3149,7 +3149,7 @@ void init_numa_balancing(unsigned long clone_flags, struct task_struct *p)
 	}
 	p->node_stamp			= 0;
 	p->numa_scan_seq		= mm ? mm->numa_scan_seq : 0;
-	p->numa_scan_period		= sysctl_numa_balancing_scan_delay;
+	p->numa_scan_period		= sysctl_numa_balancing_scan_period_min;
 	p->numa_migrate_retry		= 0;
 	/* Protect against double add, see task_tick_numa and task_numa_work */
 	p->numa_work.next		= &p->numa_work;
-- 
2.38.1