linux-kernel - Re: [PATCH v8 1/4] cpufreq: Introduce an optional cpuinfo_avg

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Message-ID: <20241212065100.sjb7lrlmksbm2hdk@vireshk-i7>
Date: Thu, 12 Dec 2024 12:21:00 +0530
From: Viresh Kumar <viresh.kumar@...aro.org>
To: Beata Michalska <beata.michalska@....com>
Cc: linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-pm@...r.kernel.org, ionela.voinescu@....com,
	sudeep.holla@....com, will@...nel.org, catalin.marinas@....com,
	rafael@...nel.org, sumitg@...dia.com, yang@...amperecomputing.com,
	vanshikonda@...amperecomputing.com, lihuisong@...wei.com,
	zhanjie9@...ilicon.com, Jonathan Corbet <corbet@....net>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	"H . Peter Anvin" <hpa@...or.com>, Phil Auld <pauld@...hat.com>,
	x86@...nel.org, linux-doc@...r.kernel.org
Subject: Re: [PATCH v8 1/4] cpufreq: Introduce an optional cpuinfo_avg_freq
 sysfs entry

On 06-12-24, 13:55, Beata Michalska wrote:
> diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
> index 04fc786dd2c0..70df2a24437b 100644
> --- a/drivers/cpufreq/cpufreq.c
> +++ b/drivers/cpufreq/cpufreq.c
> @@ -747,9 +747,14 @@ show_one(cpuinfo_transition_latency, cpuinfo.transition_latency);
>  show_one(scaling_min_freq, min);
>  show_one(scaling_max_freq, max);
>  
> -__weak unsigned int arch_freq_get_on_cpu(int cpu)
> +__weak int arch_freq_get_on_cpu(int cpu)
>  {
> -	return 0;
> +	return -EOPNOTSUPP;

I did suggest not doing this as it may not be acceptable.

https://lore.kernel.org/all/CAKohpokFUpQyHYO017kOn-Jbt0CFZ1GuxoG3N-fenWJ_poW=4Q@mail.gmail.com/

-- 
viresh