From: Daniel Lezcano <daniel.lezcano@linaro.org>
To: Viresh Kumar <viresh.kumar@linaro.org>
Cc: edubezval@gmail.com, linux-kernel@vger.kernel.org,
Sudeep Holla <sudeep.holla@arm.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Amit Daniel Kachhap <amit.kachhap@gmail.com>,
Javi Merino <javi.merino@kernel.org>,
Zhang Rui <rui.zhang@intel.com>, Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
NXP Linux Team <linux-imx@nxp.com>, Keerthy <j-keerthy@ti.com>,
"open list:CPU FREQUENCY DRIVERS - ARM BIG LITTLE"
<linux-pm@vger.kernel.org>,
"moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE"
<linux-arm-kernel@lists.infradead.org>,
"open list:TI BANDGAP AND THERMAL DRIVER"
<linux-omap@vger.kernel.org>
Subject: Re: [PATCH 2/6] thermal/drivers/cpu_cooling: Unregister with the policy
Date: Mon, 24 Jun 2019 09:45:40 +0200 [thread overview]
Message-ID: <d31f65c8-53df-ae59-5f6f-211c0ddcff3f@linaro.org> (raw)
In-Reply-To: <20190624073747.hf7jd6ulkmebbxtm@vireshk-i7>
On 24/06/2019 09:37, Viresh Kumar wrote:
> On 24-06-19, 09:30, Daniel Lezcano wrote:
>> On 24/06/2019 08:03, Viresh Kumar wrote:
>>> On 21-06-19, 15:22, Daniel Lezcano wrote:
>>>> Currently the function cpufreq_cooling_register() returns a cooling
>>>> device pointer which is used back as a pointer to call the function
>>>> cpufreq_cooling_unregister(). Even if it is correct, it would make
>>>> sense to not leak the structure inside a cpufreq driver and keep the
>>>> code thermal code self-encapsulate. Moreover, that forces to add an
>>>> extra variable in each driver using this function.
>>>>
>>>> Instead of passing the cooling device to unregister, pass the policy.
>>>>
>>>> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
>>>> ---
>>>> drivers/cpufreq/arm_big_little.c | 2 +-
>>>> drivers/cpufreq/cpufreq.c | 2 +-
>>>> drivers/thermal/cpu_cooling.c | 18 ++++++++++--------
>>>> drivers/thermal/imx_thermal.c | 4 ++--
>>>> .../thermal/ti-soc-thermal/ti-thermal-common.c | 2 +-
>>>> include/linux/cpu_cooling.h | 6 +++---
>>>> 6 files changed, 18 insertions(+), 16 deletions(-)
>>>
>>> Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
>>
>> Just a side note, does it make sense to have the function called from
>> imx_thermal.c and ti-thermal-common.c? Sounds like also a leakage from
>> cpufreq to thermal drivers, no?
>
> I am not sure what you are proposing here :)
Actually I'm asking your opinion :)
The structure in drivers/thermal/imx_thermal.c
struct imx_thermal_data {
struct cpufreq_policy *policy; <<<< in the thermal data ?!
[ ... ]
};
And then:
#ifdef CONFIG_CPU_FREQ
/*
* Create cooling device in case no #cooling-cells property is available in
* CPU node
*/
static int imx_thermal_register_legacy_cooling(struct imx_thermal_data
*data)
{
struct device_node *np;
int ret;
data->policy = cpufreq_cpu_get(0);
if (!data->policy) {
pr_debug("%s: CPUFreq policy not found\n", __func__);
return -EPROBE_DEFER;
}
np = of_get_cpu_node(data->policy->cpu, NULL);
if (!np || !of_find_property(np, "#cooling-cells", NULL)) {
data->cdev = cpufreq_cooling_register(data->policy);
if (IS_ERR(data->cdev)) {
ret = PTR_ERR(data->cdev);
cpufreq_cpu_put(data->policy);
return ret;
}
}
return 0;
}
[ ... ]
Shouldn't this be move in the drivers/cpufreq/<whatever driver> ?
--
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next prev parent reply other threads:[~2019-06-24 7:45 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-21 13:22 [PATCH 1/6] cpufreq: Use existing stub functions instead of IS_ENABLED macro Daniel Lezcano
2019-06-21 13:22 ` [PATCH 2/6] thermal/drivers/cpu_cooling: Unregister with the policy Daniel Lezcano
2019-06-24 6:03 ` Viresh Kumar
2019-06-24 7:30 ` Daniel Lezcano
2019-06-24 7:37 ` Viresh Kumar
2019-06-24 7:45 ` Daniel Lezcano [this message]
2019-06-24 9:39 ` Viresh Kumar
2019-06-21 13:22 ` [PATCH 3/6] cpufreq/drivers/arm_big_little: Remove cooling device usage Daniel Lezcano
2019-06-24 6:04 ` Viresh Kumar
2019-06-21 13:23 ` [PATCH 4/6] cpufreq: " Daniel Lezcano
2019-06-24 6:05 ` Viresh Kumar
2019-06-21 13:23 ` [PATCH 5/6] thermal/drivers/imx: " Daniel Lezcano
2019-06-24 6:06 ` Viresh Kumar
2019-06-21 13:23 ` [PATCH 6/6] thermal/drivers/ti: " Daniel Lezcano
2019-06-24 6:06 ` Viresh Kumar
2019-06-22 9:12 ` [PATCH 1/6] cpufreq: Use existing stub functions instead of IS_ENABLED macro Rafael J. Wysocki
2019-06-24 9:22 ` Daniel Lezcano
2019-06-24 9:30 ` Rafael J. Wysocki
2019-06-24 9:37 ` Daniel Lezcano
2019-06-24 8:53 ` Daniel Lezcano
2019-06-24 9:00 ` Rafael J. Wysocki
2019-06-24 9:07 ` Daniel Lezcano
2019-06-24 9:08 ` Viresh Kumar
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