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From: Lukasz Luba <lukasz.luba@arm.com>
To: Quentin Perret <qperret@google.com>
Cc: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	dri-devel@lists.freedesktop.org, linux-omap@vger.kernel.org,
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	sboyd@kernel.org, rui.zhang@intel.com,
	amit.kucheria@verdurent.com, daniel.lezcano@linaro.org,
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	matthias.bgg@gmail.com, steven.price@arm.com,
	tomeu.vizoso@collabora.com, alyssa.rosenzweig@collabora.com,
	airlied@linux.ie, daniel@ffwll.ch, liviu.dudau@arm.com,
	lorenzo.pieralisi@arm.com, patrick.bellasi@matbug.net,
	orjan.eide@arm.com, rdunlap@infradead.org, mka@chromium.org
Subject: Re: [PATCH v7 03/15] PM / EM: update callback structure and add device pointer
Date: Tue, 12 May 2020 12:11:06 +0100
Message-ID: <a2c20b82-58e3-a2ef-2d8d-edbaf05277ec@arm.com> (raw)
In-Reply-To: <20200511115722.GA13741@google.com>

Hi Quentin,

On 5/11/20 12:57 PM, Quentin Perret wrote:
> On Monday 11 May 2020 at 12:19:00 (+0100), Lukasz Luba wrote:
>> diff --git a/drivers/cpufreq/scmi-cpufreq.c b/drivers/cpufreq/scmi-cpufreq.c
>> index 61623e2ff149..11ee24e06d12 100644
>> --- a/drivers/cpufreq/scmi-cpufreq.c
>> +++ b/drivers/cpufreq/scmi-cpufreq.c
>> @@ -103,17 +103,12 @@ scmi_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask)
>>   }
>>   
>>   static int __maybe_unused
>> -scmi_get_cpu_power(unsigned long *power, unsigned long *KHz, int cpu)
>> +scmi_get_cpu_power(unsigned long *power, unsigned long *KHz,
>> +		   struct device *cpu_dev)
>>   {
>> -	struct device *cpu_dev = get_cpu_device(cpu);
>>   	unsigned long Hz;
>>   	int ret, domain;
>>   
>> -	if (!cpu_dev) {
>> -		pr_err("failed to get cpu%d device\n", cpu);
>> -		return -ENODEV;
>> -	}
>> -
>>   	domain = handle->perf_ops->device_domain_id(cpu_dev);
>>   	if (domain < 0)
>>   		return domain;
>> @@ -200,7 +195,7 @@ static int scmi_cpufreq_init(struct cpufreq_policy *policy)
>>   
>>   	policy->fast_switch_possible = true;
>>   
>> -	em_register_perf_domain(policy->cpus, nr_opp, &em_cb);
> 
> So this one has no users after this patch right? I suppose you could
> squash patch 05 in this one. But no big deal.

Yes, it was tricky to me to decide the splits suggested by Daniel and
this is the example. I had to introduce the em_dev_register_perf_domain
and make clients of it before I remove the old em_register_perf_domain
completely. I agree it could also go with the patch 5, but it does not
harm to be here.

> 
> Acked-by: Quentin Perret <qperret@google.com>

Thank you for this ACKs and the earlier.

Regards,
Lukasz

> 
>> +	em_dev_register_perf_domain(cpu_dev, nr_opp, &em_cb, policy->cpus);
>>   
>>   	return 0;

  reply index

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-11 11:18 [PATCH v7 00/15] Add support for devices in the Energy Model Lukasz Luba
2020-05-11 11:18 ` [PATCH v7 01/15] PM / EM: change naming convention from 'capacity' to 'performance' Lukasz Luba
2020-05-11 11:46   ` Quentin Perret
2020-05-11 11:18 ` [PATCH v7 02/15] PM / EM: introduce em_dev_register_perf_domain function Lukasz Luba
2020-05-11 11:51   ` Quentin Perret
2020-05-11 11:19 ` [PATCH v7 03/15] PM / EM: update callback structure and add device pointer Lukasz Luba
2020-05-11 11:57   ` Quentin Perret
2020-05-12 11:11     ` Lukasz Luba [this message]
2020-05-11 11:19 ` [PATCH v7 04/15] PM / EM: add support for other devices than CPUs in Energy Model Lukasz Luba
2020-05-11 13:43   ` Quentin Perret
2020-05-12 11:38     ` Lukasz Luba
2020-05-11 11:19 ` [PATCH v7 05/15] PM / EM: remove em_register_perf_domain Lukasz Luba
2020-05-11 13:44   ` Quentin Perret
2020-05-11 11:19 ` [PATCH v7 06/15] PM / EM: change name of em_pd_energy to em_cpu_energy Lukasz Luba
2020-05-11 13:45   ` Quentin Perret
2020-05-11 11:19 ` [PATCH v7 07/15] Documentation: power: update Energy Model description Lukasz Luba
2020-05-11 13:48   ` Quentin Perret
2020-05-11 11:19 ` [PATCH v7 08/15] OPP: refactor dev_pm_opp_of_register_em() and update related drivers Lukasz Luba
2020-05-11 11:19 ` [PATCH v7 09/15] thermal: devfreq_cooling: change tracing function and arguments Lukasz Luba
2020-05-11 11:19 ` [PATCH v7 10/15] thermal: devfreq_cooling: get device load and frequency directly Lukasz Luba
2020-05-11 11:19 ` [PATCH v7 11/15] thermal: devfreq_cooling: work on a copy of device status Lukasz Luba
2020-05-11 11:19 ` [PATCH v7 12/15] thermal: devfreq_cooling: add new registration functions with Energy Model Lukasz Luba
2020-05-11 11:19 ` [PATCH v7 13/15] thermal: devfreq_cooling: remove old power model and use EM Lukasz Luba
2020-05-11 11:19 ` [PATCH v7 14/15] thermal: devfreq_cooling: update license to use SPDX Lukasz Luba
2020-05-11 11:19 ` [PATCH v7 15/15] drm/panfrost: Register devfreq cooling and attempt to add Energy Model Lukasz Luba
2020-05-22 10:43 ` [PATCH v7 00/15] Add support for devices in the " Daniel Lezcano
2020-05-22 12:58   ` Lukasz Luba
2020-05-22 13:01     ` Daniel Lezcano

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