From e72e6830154ef1ca4d9c81414b88f2d2c0e1bfbd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mika=20Penttil=C3=A4?= <mika.penttila@gmail.com>
Date: Thu, 22 Jul 2021 09:39:46 +0300
Subject: [PATCH] sched/numa: Fix is_core_idle()
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References: git fixes (sched) stable-5.14.4
Patch-mainline: v5.15-rc1
Git-commit: 1c6829cfd3d5124b125e6df41158665aea413b35

Use the loop variable instead of the function argument to test the
other SMT siblings for idle.

Fixes: ff7db0bf24db ("sched/numa: Prefer using an idle CPU as a migration target instead of comparing tasks")
Signed-off-by: Mika Penttilä <mika.penttila@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Pankaj Gupta <pankaj.gupta@ionos.com>
Link: https://lkml.kernel.org/r/20210722063946.28951-1-mika.penttila@gmail.com
Signed-off-by: Mel Gorman <mgorman@suse.de>
---
 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 44c452072a1b..30a6984a58f7 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -1486,7 +1486,7 @@ static inline bool is_core_idle(int cpu)
 		if (cpu == sibling)
 			continue;
 
-		if (!idle_cpu(cpu))
+		if (!idle_cpu(sibling))
 			return false;
 	}
 #endif