[PATCH] sched: topology: add input parameter for sched_domain_flags_f()

[王擎]

>> From: Wang Qing <wangqing at vivo.com>
>> 
>> sched_domain_flags_f() are statically set now, but actually, we can get a
>> lot of necessary information based on the cpu_map. e.g. we can know whether
>> its cache is shared.
>> 
>> Allows custom extension without affecting current.
>
>This all still makes absolutely no sense. The architecture builds these
>masks, the architecture is in charge of which flags function is called
>on which mask.
>
>Passing the mask back in means it lost the plot somewhere and doens't
>know wth it's doing anymore.

It is not passing the mask back, sched_domain_flags_f() doesn't use cpumask
at all, it always return fixed values. sd_topology_level select different 
sd_flag() to config, it's too primitive.

If an architecture can describe its cache topology clearly in every level,
the sd only need sched_domain_flags_f(cpumask) to get its ShPR flag.

Thanks,
Wang

>
>NAK