From: "Rafael J. Wysocki" <rafael@kernel.org>
To: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Amit Kucheria <amit.kucheria@linaro.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-arm-msm <linux-arm-msm@vger.kernel.org>,
bjorn.andersson@linaro.org,
Eduardo Valentin <edubezval@gmail.com>,
Andy Gross <andy.gross@linaro.org>,
Taniya Das <tdas@codeaurora.org>,
Stephen Boyd <swboyd@chromium.org>,
Doug Anderson <dianders@chromium.org>,
Matthias Kaehlcke <mka@chromium.org>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
"open list:CPU FREQUENCY DRIVERS" <linux-pm@vger.kernel.org>
Subject: Re: [PATCH v1 5/7] cpufreq: qcom-hw: Register as a cpufreq cooling device
Date: Thu, 10 Jan 2019 10:32:19 +0100 [thread overview]
Message-ID: <CAJZ5v0hKODG2hT+8iwpX3te1dpbLPuy4=7RrEmAp=aATuEdkhA@mail.gmail.com> (raw)
In-Reply-To: <20190110061210.lz5i5wf7wxh22q7c@vireshk-i7>
On Thu, Jan 10, 2019 at 7:12 AM Viresh Kumar <viresh.kumar@linaro.org> wrote:
>
> On 10-01-19, 05:30, Amit Kucheria wrote:
> > Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
> > ---
> > drivers/cpufreq/qcom-cpufreq-hw.c | 5 +++++
> > 1 file changed, 5 insertions(+)
> >
> > diff --git a/drivers/cpufreq/qcom-cpufreq-hw.c b/drivers/cpufreq/qcom-cpufreq-hw.c
> > index 649dddd72749..1c01311e5927 100644
> > --- a/drivers/cpufreq/qcom-cpufreq-hw.c
> > +++ b/drivers/cpufreq/qcom-cpufreq-hw.c
> > @@ -5,6 +5,7 @@
> >
> > #include <linux/bitfield.h>
> > #include <linux/cpufreq.h>
> > +#include <linux/cpu_cooling.h>
> > #include <linux/init.h>
> > #include <linux/kernel.h>
> > #include <linux/module.h>
> > @@ -216,7 +217,10 @@ static int qcom_cpufreq_hw_cpu_init(struct cpufreq_policy *policy)
> > static int qcom_cpufreq_hw_cpu_exit(struct cpufreq_policy *policy)
> > {
> > void __iomem *base = policy->driver_data - REG_PERF_STATE;
> > + struct thermal_cooling_device *cdev = policy->cooldev;
> >
> > + if (cdev)
> > + cpufreq_cooling_unregister(cdev);
> > kfree(policy->freq_table);
> > devm_iounmap(&global_pdev->dev, base);
> >
> > @@ -238,6 +242,7 @@ static struct cpufreq_driver cpufreq_qcom_hw_driver = {
> > .init = qcom_cpufreq_hw_cpu_init,
> > .exit = qcom_cpufreq_hw_cpu_exit,
> > .fast_switch = qcom_cpufreq_hw_fast_switch,
> > + .ready = generic_cpufreq_ready,
> > .name = "qcom-cpufreq-hw",
> > .attr = qcom_cpufreq_hw_attr,
> > };
>
> I liked the idea of reducing code duplication, but not much the
> implementation. All we were able to get rid of was a call to
> of_cpufreq_cooling_register() and nothing else. Is it worth it ?
>
> Maybe we can add another flag in cpufreq.h:
>
> #define CPUFREQ_AUTO_REGISTER_COOLING_DEV (1 << 7)
>
> and let the core do it all automatically by itself, that will get rid
> of code duplication actually.
>
> @Rafael: What do you say ?
Getting rid of code duplication is good, let's do that.
next prev parent reply other threads:[~2019-01-10 9:32 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-10 0:00 [PATCH v1 0/7] Thermal throttling for SDM845 Amit Kucheria
2019-01-10 0:00 ` [PATCH v1 1/7] drivers: thermal: of-thermal: Print name of device node with error Amit Kucheria
2019-01-10 0:15 ` Stephen Boyd
2019-01-10 0:00 ` [PATCH v1 2/7] drivers: cpufreq: Add thermal_cooling_device pointer to struct cpufreq_policy Amit Kucheria
2019-01-10 1:01 ` Matthias Kaehlcke
2019-01-10 0:00 ` [PATCH v1 3/7] cpu_cooling: Add generic driver ready callback Amit Kucheria
2019-01-10 6:14 ` Viresh Kumar
2019-01-10 0:00 ` [PATCH v1 4/7] cpufreq: qcom-hw: Move to device_initcall Amit Kucheria
2019-01-10 6:44 ` Viresh Kumar
2019-01-10 0:00 ` [PATCH v1 5/7] cpufreq: qcom-hw: Register as a cpufreq cooling device Amit Kucheria
2019-01-10 6:12 ` Viresh Kumar
2019-01-10 9:03 ` Amit Kucheria
2019-01-10 9:32 ` Rafael J. Wysocki [this message]
2019-01-10 0:00 ` [PATCH v1 6/7] arm64: dts: sdm845: Increase alert trip point to 95 degrees Amit Kucheria
2019-01-10 0:29 ` Stephen Boyd
2019-01-10 17:14 ` Doug Anderson
2019-01-10 20:06 ` Amit Kucheria
2019-01-10 1:15 ` Matthias Kaehlcke
2019-01-10 2:15 ` Matthias Kaehlcke
2019-01-10 19:45 ` Amit Kucheria
2019-01-10 20:00 ` Matthias Kaehlcke
2019-01-11 3:32 ` Viresh Kumar
2019-01-11 10:24 ` Amit Kucheria
2019-01-11 18:30 ` Matthias Kaehlcke
2019-01-10 0:00 ` [PATCH v1 7/7] arm64: dts: sdm845: wireup the thermal trip points to cpufreq Amit Kucheria
2019-01-10 0:28 ` Stephen Boyd
2019-01-10 12:28 ` Amit Kucheria
2019-01-10 2:22 ` Matthias Kaehlcke
2019-01-10 6:23 ` Viresh Kumar
2019-01-10 18:42 ` Matthias Kaehlcke
2019-01-11 3:46 ` Viresh Kumar
2019-01-11 19:58 ` Matthias Kaehlcke
2019-01-14 5:59 ` Viresh Kumar
2019-01-11 0:30 ` Matthias Kaehlcke
2019-01-11 11:17 ` Amit Kucheria
2019-01-11 20:36 ` Matthias Kaehlcke
2019-01-14 8:22 ` Amit Kucheria
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