linux-kernel - Re: [PATCH v2 1/5] PM / OPP: Introduce a power estimation helper

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Date:   Thu, 31 Jan 2019 12:52:09 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Matthias Kaehlcke <mka@...omium.org>
Cc:     Quentin Perret <quentin.perret@....com>, sudeep.holla@....com,
        rjw@...ysocki.net, nm@...com, sboyd@...nel.org,
        linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, dietmar.eggemann@....com
Subject: Re: [PATCH v2 1/5] PM / OPP: Introduce a power estimation helper

On 30-01-19, 11:07, Matthias Kaehlcke wrote:
> On Wed, Jan 30, 2019 at 05:05:02PM +0000, Quentin Perret wrote:
> > +static int __maybe_unused _get_cpu_power(unsigned long *mW, unsigned long *kHz,
> > +					 int cpu)
> 
> why __maybe_unused?

Yeah, it isn't required I think. He probably added it for the case
where CONFIG_ENERGY_MODEL=n, but even then an inline routine is
defined which will accept it as argument and wouldn't do anything with
it. Had it been a macro, we would have required __maybe_unused but not
now.

-- 
viresh