linux-kernel - Re: [PATCH v2 2/2] cpufreq: Specify default governor on command line

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Message-ID: <20200626025346.z3g3ikdcin56gjlo@vireshk-i7>
Date:   Fri, 26 Jun 2020 08:23:46 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Quentin Perret <qperret@...gle.com>
Cc:     rjw@...ysocki.net, rafael@...nel.org, arnd@...db.de,
        mpe@...erman.id.au, benh@...nel.crashing.org, paulus@...ba.org,
        mingo@...hat.com, peterz@...radead.org, juri.lelli@...hat.com,
        vincent.guittot@...aro.org, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
        kernel-team@...roid.com, tkjos@...gle.com, adharmap@...eaurora.org
Subject: Re: [PATCH v2 2/2] cpufreq: Specify default governor on command line

On 23-06-20, 15:21, Quentin Perret wrote:
> @@ -2789,7 +2796,13 @@ static int __init cpufreq_core_init(void)
>  	cpufreq_global_kobject = kobject_create_and_add("cpufreq", &cpu_subsys.dev_root->kobj);
>  	BUG_ON(!cpufreq_global_kobject);
>  
> +	mutex_lock(&cpufreq_governor_mutex);
> +	if (!default_governor)

Also is this check really required ? The pointer will always be NULL
at this point, isn't it ?

> +		default_governor = cpufreq_default_governor();
> +	mutex_unlock(&cpufreq_governor_mutex);
> +
>  	return 0;
>  }
>  module_param(off, int, 0444);
> +module_param_string(default_governor, cpufreq_param_governor, CPUFREQ_NAME_LEN, 0444);
>  core_initcall(cpufreq_core_init);
> -- 
> 2.27.0.111.gc72c7da667-goog

-- 
viresh