linux-kernel - Re: [PATCH v5 0/6] Initialise thermal framework and cpufreq earlier during boot

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Message-ID: <CAHLCerPNDJCjaUakCu-0woqy+kJM0LK9vieYKqncnNbAsH83qw@mail.gmail.com>
Date:   Thu, 31 Oct 2019 10:13:55 +0530
From:   Amit Kucheria <amit.kucheria@...durent.com>
To:     Zhang Rui <rui.zhang@...el.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Sudeep Holla <sudeep.holla@....com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Eduardo Valentin <edubezval@...il.com>,
        Andy Gross <agross@...nel.org>,
        Taniya Das <tdas@...eaurora.org>,
        Stephen Boyd <swboyd@...omium.org>, ilina@...eaurora.org,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Ben Segall <bsegall@...gle.com>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Ingo Molnar <mingo@...hat.com>,
        Juri Lelli <juri.lelli@...hat.com>,
        Mel Gorman <mgorman@...e.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        linux-clk <linux-clk@...r.kernel.org>, linux-doc@...r.kernel.org,
        Linux PM list <linux-pm@...r.kernel.org>
Subject: Re: [PATCH v5 0/6] Initialise thermal framework and cpufreq earlier
 during boot

Hi Rui,

I'm assuming that since Rafael acked it, he is ok with this going thru
the thermal tree.

Regards,
Amit

On Thu, Oct 31, 2019 at 8:12 AM Zhang Rui <rui.zhang@...el.com> wrote:
>
> Hi,
>
> Given that all the patches in this series have got the ACK from the
> subsystem maintainers, I suppose we can take all the patches through
> thermal tree, right?
>
> thanks,
> rui
>
> On Mon, 2019-10-21 at 17:45 +0530, Amit Kucheria wrote:
> > Changes since v4:
> > - Collect Acks
> > - Pick the US spelling for 'initialis^Hze' consistently.
> >
> > Changes since v3:
> > - Init schedutil governor earlier too
> > - Simplified changes to thermal_init() error path
> > - Collects Acks
> >
> > Changes since v2:
> > - Missed one patch when posting v2. Respinning.
> >
> > Changes since v1:
> > - Completely get rid of netlink support in the thermal framework.
> > - This changes the early init patch to a single line - change to
> >   core_initcall. Changed authorship of patch since it is nothing like
> > the
> >   original. Lina, let me know if you feel otherwise.
> > - I've tested to make sure that the qcom-cpufreq-hw driver continues
> > to
> >   work correctly as a module so this won't impact Android's GKI
> > plans.
> > - Collected Acks
> >
> > Device boot needs to be as fast as possible while keeping under the
> > thermal
> > envelope. Now that thermal framework is built-in to the kernel, we
> > can
> > initialize it earlier to enable thermal mitigation during boot.
> >
> > We also need the cpufreq HW drivers to be initialised earlier to act
> > as the
> > cooling devices. This series only converts over the qcom-hw driver to
> > initialize earlier but can be extended to other platforms as well.
> >
> > Amit Kucheria (6):
> >   thermal: Remove netlink support
> >   thermal: Initialize thermal subsystem earlier
> >   cpufreq: Initialize the governors in core_initcall
> >   cpufreq: Initialize cpufreq-dt driver earlier
> >   clk: qcom: Initialize clock drivers earlier
> >   cpufreq: qcom-hw: Move driver initialization earlier
> >
> >  .../driver-api/thermal/sysfs-api.rst          |  26 +----
> >  drivers/clk/qcom/clk-rpmh.c                   |   2 +-
> >  drivers/clk/qcom/gcc-qcs404.c                 |   2 +-
> >  drivers/clk/qcom/gcc-sdm845.c                 |   2 +-
> >  drivers/cpufreq/cpufreq-dt-platdev.c          |   2 +-
> >  drivers/cpufreq/cpufreq_conservative.c        |   2 +-
> >  drivers/cpufreq/cpufreq_ondemand.c            |   2 +-
> >  drivers/cpufreq/cpufreq_performance.c         |   2 +-
> >  drivers/cpufreq/cpufreq_powersave.c           |   2 +-
> >  drivers/cpufreq/cpufreq_userspace.c           |   2 +-
> >  drivers/cpufreq/qcom-cpufreq-hw.c             |   2 +-
> >  drivers/thermal/thermal_core.c                | 103 +---------------
> > --
> >  include/linux/thermal.h                       |  11 --
> >  kernel/sched/cpufreq_schedutil.c              |   2 +-
> >  14 files changed, 19 insertions(+), 143 deletions(-)
> >
>