linux-kernel - Re: [RFC PATCH v3 0/5] Introduce Cpufreq Active Stats

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Message-ID: <20220426075402.qjpato6sqy2kes4x@vireshk-i7>
Date:   Tue, 26 Apr 2022 13:24:02 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Lukasz Luba <lukasz.luba@....com>
Cc:     linux-kernel@...r.kernel.org, dietmar.eggemann@....com,
        rafael@...nel.org, daniel.lezcano@...aro.org, amitk@...nel.org,
        rui.zhang@...el.com, amit.kachhap@...il.com,
        linux-pm@...r.kernel.org
Subject: Re: [RFC PATCH v3 0/5] Introduce Cpufreq Active Stats

On 26-04-22, 08:46, Lukasz Luba wrote:
> I haven't modify your current cpufreq stats, they are still counting
> total time (idle + running) for the given frequency. I think this is
> still useful for some userspace tools. These new proposed stats don't
> have such sysfs interface to read them. I don't know if userspace would
> be interested in this information (the running only time). IIRC Android
> uses bpf mechanisms to get this information to the userspace.

I saw some debugfs bits there, aren't you exposing any data via it ? I
am just asking about, not suggesting :)

-- 
viresh