This is a note to let you know that I've just added the patch titled sched/numa: Fix is_core_idle() to the 5.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: sched-numa-fix-is_core_idle.patch and it can be found in the queue-5.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 4eb16d3b3b997d7c3c6b65e0e7a102474efb1d0d Author: Mika Penttilä <mika.penttila@xxxxxxxxx> Date: Thu Jul 22 09:39:46 2021 +0300 sched/numa: Fix is_core_idle() [ Upstream 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@xxxxxxxxx> Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx> Acked-by: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx> Acked-by: Pankaj Gupta <pankaj.gupta@xxxxxxxxx> Link: https://lkml.kernel.org/r/20210722063946.28951-1-mika.penttila@xxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> 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