Messages in this thread | | | Date | Mon, 1 Jul 2013 18:19:10 +0200 | From | Andi Kleen <> | Subject | Re: [PATCH RFC nohz_full 0/7] v2 Provide infrastructure for full-system idle |
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> I am guessing that you want CONFIG_NO_HZ_FULL to implicitly enable > the sysidle code so that CONFIG_NO_HZ_FULL_SYSIDLE can be eliminated. > I will be happy to take that step, but only after I gain full confidence > in the correctness and performance of the sysidle code.
FWIW if you want useful testing you need to enable it by default (as part of NO_IDLE_HZ) anyways. Users will most likely pick whatever is "default" in Kconfig.
> > If you want a switch for testing I would advise a sysctl or sysfs knob > > This would work well for the correctness part, but not for the performance > part.
What performance part?
Are you saying this adds so many checks to hot paths that normal runtime if() with a flag is too expensive?
-Andi -- ak@linux.intel.com -- Speaking for myself only.
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