Re: [PATCH] sched/fair: Update nohz.next_balance for newly NOHZ-idle CPUs

[Dietmar Eggemann]

On 14/07/2021 13:39, Valentin Schneider wrote:

[...]

> @@ -8942,6 +8946,10 @@ void __init sched_init(void)
>  			cpumask_size(), GFP_KERNEL, cpu_to_node(i));
>  		per_cpu(select_idle_mask, i) = (cpumask_var_t)kzalloc_node(
>  			cpumask_size(), GFP_KERNEL, cpu_to_node(i));
> +#ifdef CONFIG_NOHZ_COMMON
> +		per_cpu(nohz_balance_mask, i) = (cpumask_var_t)kzalloc_node(
> +			cpumask_size(), GFP_KERNEL, cpu_to_node(i));
> +#endif /* CONFIG_NOHZ_COMMON */
>  	}
>  #endif /* CONFIG_CPUMASK_OFFSTACK */

s/CONFIG_NOHZ_COMMON/CONFIG_NO_HZ_COMMON

Otherwise CONFIG_CPUMASK_OFFSTACK system will have issues.

[...]