On 14.09.2019 10:52, Juergen Gross wrote:
> --- a/xen/common/schedule.c
> +++ b/xen/common/schedule.c
> @@ -59,7 +59,7 @@ integer_param("sched_ratelimit_us", sched_ratelimit_us);
> enum sched_gran __read_mostly opt_sched_granularity = SCHED_GRAN_cpu;
> unsigned int __read_mostly sched_granularity = 1;
> bool __read_mostly sched_disable_smt_switching;
> -const cpumask_t *sched_res_mask = &cpumask_all;
> +cpumask_var_t sched_res_mask;
For a non-automatic variable it might be even easier to have it
be cpumask_t?
> @@ -2401,6 +2407,8 @@ static int cpu_schedule_up(unsigned int cpu)
> /* We start with cpu granularity. */
> sd->granularity = 1;
>
> + cpumask_set_cpu(cpu, sched_res_mask);
I'm missing the clearing counterpart.
Jan
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