On 2013/8/21 22:20, Tejun Heo wrote:
> On Wed, Aug 21, 2013 at 06:01:32PM +0800, Li Zefan wrote:
>> {
>> + .name = "effective_cpus",
>> + .flags = CFTYPE_SANE,
>> + .read = cpuset_common_file_read,
>> + .max_write_len = (100U + 6 * NR_CPUS),
>> + .private = FILE_EFFECTIVE_CPULIST,
>
> I don't think we need CFTYPE_SANE. We can just expose these
> unconditionally, right? It still means the same thing when !sane.
>
It seems confusing if there're two interaces but they actually mean
the same thing.
Another reason I didn't do this is, they're not always the same. When
!sane, If cpus_allowed is empty, effective_cpus is not empty, and you
are not able to put tasks into this cpuset. So if we want to expose
it unconditionally, I'll make sure cpus_allowed == effective_cpus
always stand when !sane.
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