Messages in this thread | | | From | "Rafael J. Wysocki" <> | Date | Thu, 6 Jan 2022 17:12:51 +0100 | Subject | Re: [PATCH 2/2] x86, sched: Fix the undefined reference building error of init_freq_invariance_cppc |
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On Thu, Jan 6, 2022 at 4:55 PM Borislav Petkov <bp@alien8.de> wrote: > > On Thu, Jan 06, 2022 at 10:55:20PM +0800, Huang Rui wrote: > > I just thought the CPPC function should be able to work on single core even > > SMP is disabled. > > Why, because SMP=n is a real use case?!
And why can't it be a real use case?
> FWIW, we were even speculating on removing SMP=n so how practical is > using CPPC on SMP=n at all?
The honest answer is that we don't know.
Moreover, AFAICS the requisite #ifdeffery is there already and the problem is that the init_freq_invariance_cppc() defined in smpboot.c is not exported to modules and the CPPC code is modular in this build.
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