Eric Saxe wrote:
> Mark Haywood wrote:
>> Eric Saxe wrote:
>>
>>> I'm thinking the cpu_change_speed and cstate_transition DTrace
>>> probes (which are already in the PowerTop repo) are generally
>>> useful. So i'm interested in putting them back to Nevada. Thoughts?
>>> Moving forward, this could eliminate the PowerTop's dependence on
>>> the kernel.
>>>
>>
>> Yep. I think that the cpu_change_speed probe is a good idea. Didn't
>> see the cstate_transition probe, but it seems like a good idea too.
>> I'd rather we used Dtrace probes instead of kstats.
> I've filed:
>
> 6635705 static DTrace probe points for CPU power management state
> transitions
>
> I'll send out a webrev when it's implemented. DTrace probes can have a
> level of stability associated
> with them. I might propose that they be considered "unstable" to
> start, and then after we're convinced
> that the interface is correct and sufficient we can go through ARC to
> promote their stability. Does that
> seem reasonable?
Perfectly.
