Re: [PATCH v3] mm, sysctl: make NUMA stats configurable

[Dave Hansen]

On 10/10/2017 07:31 AM, Michal Hocko wrote:
> On Tue 10-10-17 07:29:31, Dave Hansen wrote:
>> On 10/09/2017 10:49 PM, Michal Hocko wrote:
>>> Anyway I still stand by my position that this sounds over-engineered and
>>> a simple 0/1 resp. on/off interface would be both simpler and safer. If
>>> anybody wants an auto mode it can be added later (as a value 2 resp.
>>> auto).
>>
>> 0/1 with the default set to the strict, slower mode?
> 
> yes, keep the current semantic and allow users who care to disable
> something that stands in the way.

But, let's be honest, this leaves us with an option that nobody is ever
going to turn on.  IOW, nobody except a very small portion of our users
will ever see any benefit from this.