Messages in this thread | | | Date | Tue, 21 Mar 2017 19:28:19 +0000 | From | Patrick Bellasi <> | Subject | Re: [RFC][PATCH v2 2/2] cpufreq: schedutil: Avoid decreasing frequency of busy CPUs |
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On 21-Mar 16:18, Peter Zijlstra wrote: > On Tue, Mar 21, 2017 at 03:08:20PM +0000, Patrick Bellasi wrote: > > > And than we can move this bit into an inline function, something like e.g.: > > > > static inline bool sugov_this_cpu_is_busy() > > { > > return this_rq()->rd->overloaded > > } > > No, that's just entirely and utterly wrong. It being in rd means its > very much not about _this_ CPU in any way.
You right (of course), we cannot really use "this_" in the name of a function with such a code.
The suggestion here was at least to factor out whatever code we want to use to check if the current CPU has to be subject to a down-scaling constraint.
However, using rd->overload is not the best option, for the many reasons you explained in your previous comment. Thus, we should probably stay with the idle time tracking solution initially proposed by Rafael.
Sorry for the noise :-(
-- #include <best/regards.h>
Patrick Bellasi
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