linux-kernel - Re: [PATCH 1/2] cpufreq: Fix a comment in cpufreq_policy

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Date:   Wed, 1 Dec 2021 14:39:18 +0800
From:   Tang Yizhou <tangyizhou@...wei.com>
To:     Viresh Kumar <viresh.kumar@...aro.org>
CC:     <rafael.j.wysocki@...el.com>, <rafael@...nel.org>,
        <linux-pm@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] cpufreq: Fix a comment in cpufreq_policy_free

On 2021/12/1 12:22, Viresh Kumar wrote:
> On 30-11-21, 23:15, Tang Yizhou wrote:
>> The comment is inconsistent with the block_notifier_call_chain() call,
>> so fix it.
>>
>> Signed-off-by: Tang Yizhou <tangyizhou@...wei.com>
>> ---
>>  drivers/cpufreq/cpufreq.c | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
>> index e338d2f010fe..8f753675e4a2 100644
>> --- a/drivers/cpufreq/cpufreq.c
>> +++ b/drivers/cpufreq/cpufreq.c
>> @@ -1296,7 +1296,7 @@ static void cpufreq_policy_free(struct cpufreq_policy *policy)
>>  
>>  	if (policy->max_freq_req) {
>>  		/*
>> -		 * CPUFREQ_CREATE_POLICY notification is sent only after
>> +		 * CPUFREQ_REMOVE_POLICY notification is sent only after
> 
> No, the earlier comment is correct. It says when the CREATE notification was
> sent and so we need to do the remove here before removing max_freq_req.

I see. I was confused at the first time. Perhaps it is better to both comment when
CPUFREQ_CREATE_POLICY and CPUFREQ_REMOVE_POLICY notification is sent.

> 
>>  		 * successfully adding max_freq_req request.
>>  		 */
>>  		blocking_notifier_call_chain(&cpufreq_policy_notifier_list,
>> -- 
>> 2.17.1
> 

Tang