[rfc] remove hlt_cpus et al sysctls and related code

[Andriy Gapon]

on 29/05/2011 06:06 Attilio Rao said the following:
> 2011/5/28 Attilio Rao <attilio at freebsd.org>:
>> 2011/5/25 Andriy Gapon <avg at freebsd.org>:
>>> The patch is here:
>>> http://people.freebsd.org/~avg/cpu-offline-sysctl.diff
>>> It should implement the strategy described above.
>>>
>>
>> I don't see the point in keeping alive mp_grab_cpu_hlt() and
>> supporting, actually.
>>
>> On the top of your patch I made some modifies that use directly
>> ap_watchdog() in cpu_idle() which I think is better for the time
>> being:
>> http://www.freebsd.org/~attilio/avg_rem_cpuhlt.diff

Yes, I agree, thank you.

>> If you are happy with it, just commit as long as Garrett tests that.


OK.  Waiting for test feedback.

>> On a second round of changes we can discuss mp_watchdog and eventual
>> removal / improvements to it.
> 
> I almost forgot: this change would also require an UPDATE entry, where
> you explicitly mention the "new" way to deal with CPUs. Use your
> prefer wording.

Sure.  Thank you!

BTW, I guess there would be no reason to MFC this change?

-- 
Andriy Gapon