Re: [PATCH 1/4] sched/topology: SD_ASYM_CPUCAPACITY flag detection

From: Ingo Molnar
Date: Mon Sep 10 2018 - 04:21:19 EST



* Morten Rasmussen <morten.rasmussen@xxxxxxx> wrote:

> The SD_ASYM_CPUCAPACITY sched_domain flag is supposed to mark the
> sched_domain in the hierarchy where all cpu capacities are visible for
> any cpu's point of view on asymmetric cpu capacity systems. The

> /*
> + * Find the sched_domain_topology_level where all cpu capacities are visible
> + * for all cpus.
> + */

> + /*
> + * Examine topology from all cpu's point of views to detect the lowest
> + * sched_domain_topology_level where a highest capacity cpu is visible
> + * to everyone.
> + */

> #define SD_WAKE_AFFINE 0x0020 /* Wake task to waking CPU */
> -#define SD_ASYM_CPUCAPACITY 0x0040 /* Groups have different max cpu capacities */
> +#define SD_ASYM_CPUCAPACITY 0x0040 /* Domain members have different cpu capacities */

For future reference: *please* capitalize 'CPU' and 'CPUs' in future patches like the rest of
the scheduler does.

You can see it spelled right above the new definition: 'waking CPU' ;-)

(I fixed this up in this patch.)

Thanks!

Ingo