Messages in this thread | | | Date | Tue, 1 Mar 2016 14:26:47 +0100 | From | Peter Zijlstra <> | Subject | Re: [RFCv7 PATCH 03/10] sched: scheduler-driven cpu frequency selection |
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On Fri, Feb 26, 2016 at 08:17:46PM -0800, Steve Muckle wrote: > > But then it would only make a difference if cpufreq_update_util() was not > > used at all (ie. no callbacks installed for any policies by anyone). The > > only reason why it may matter is that the total number of systems using > > the performance governor is quite large AFAICS and they would benefit from > > that. > > I'd think that's a benefit worth preserving, but I guess that's Peter > and Ingo's call.
Probably worth it, most of this is on rather fast paths.
See commit 1cde2930e154 ("sched/preempt: Add static_key() to preempt_notifiers") for example.
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