linux-kernel - Re: [PATCH v1] PM / Domains: Add tracepoints

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Message-ID: <20191001130343.4480afe3@gandalf.local.home>
Date:   Tue, 1 Oct 2019 13:03:43 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Matthias Kaehlcke <mka@...omium.org>
Cc:     "Rafael J . Wysocki" <rjw@...ysocki.net>,
        Kevin Hilman <khilman@...nel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Len Brown <len.brown@...el.com>, Pavel Machek <pavel@....cz>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Ingo Molnar <mingo@...hat.com>,
        Douglas Anderson <dianders@...omium.org>,
        linux-pm@...r.kernel.org, Amit Kucheria <amit.kucheria@...aro.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] PM / Domains: Add tracepoints

On Tue, 1 Oct 2019 09:35:42 -0700
Matthias Kaehlcke <mka@...omium.org> wrote:

> How about this instead:
> 
>   Add tracepoints for genpd_power_on, genpd_power_off and
>   genpd_set_performance_state. The tracepoints can help with
>   understanding power domain behavior of a given device, which
>   may be particularly interesting for battery powered devices
>   and suspend/resume.

Do you have a use case example to present?

Thanks!

-- Steve