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SubjectRe: [tip: sched/core] sched/numa: Avoid migrating task to CPU-less node
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Qian Cai <quic_qiancai@quicinc.com> writes:

> On Mon, Mar 07, 2022 at 01:51:55PM +0800, Huang, Ying wrote:
>> > ---
>> > 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 a3f0ea216ccb..1fe7a4510cca 100644
>> > --- a/kernel/sched/fair.c
>> > +++ b/kernel/sched/fair.c
>> > @@ -2405,7 +2405,7 @@ static void task_numa_placement(struct task_struct *p)
>> > }
>> >
>> > /* Cannot migrate task to CPU-less node */
>> > - if (!node_state(max_nid, N_CPU)) {
>> > + if (max_nid != NUMA_NO_NODE && !node_state(max_nid, N_CPU)) {
>> > int near_nid = max_nid;
>> > int distance, near_distance = INT_MAX;
>>
>> Do you have time to give this patch a try?
>
> Ah, I thought I has already replied it a while ago. Anyway, it works fine.

Thanks!

Best Regards,
Huang, Ying

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