linux-kernel - Re: [PATCH v3 1/1] cpufreq: schedutil: Optimize operations with single CPU capacity lookup

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Message-ID: <20221208233801.s26awslkx6aloxyd@vireshk-i7>
Date:   Fri, 9 Dec 2022 05:08:01 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Lukasz Luba <lukasz.luba@....com>
Cc:     linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
        rafael@...nel.org, dietmar.eggemann@....com,
        vincent.guittot@...aro.org, saravanak@...gle.com,
        wusamuel@...gle.com, isaacmanjarres@...gle.com,
        kernel-team@...roid.com, juri.lelli@...hat.com,
        peterz@...radead.org, mingo@...hat.com, rostedt@...dmis.org,
        bsegall@...gle.com, mgorman@...e.de
Subject: Re: [PATCH v3 1/1] cpufreq: schedutil: Optimize operations with
 single CPU capacity lookup

On 08-12-22, 16:02, Lukasz Luba wrote:
> @@ -332,12 +333,15 @@ static void sugov_update_single_freq(struct update_util_data *hook, u64 time,
>  	struct sugov_cpu *sg_cpu = container_of(hook, struct sugov_cpu, update_util);
>  	struct sugov_policy *sg_policy = sg_cpu->sg_policy;
>  	unsigned int cached_freq = sg_policy->cached_raw_freq;
> +	unsigned long max_cap;
>  	unsigned int next_f;
>  
> -	if (!sugov_update_single_common(sg_cpu, time, flags))
> +	max_cap = arch_scale_cpu_capacity(sg_cpu->cpu);

I will rather do this at all three locations:

	unsigned long max_cap = arch_scale_cpu_capacity(sg_cpu->cpu);

-- 
viresh