linux-kernel - Re: [Patch v2 1/2] cpufreq: tegra194: save CPU data to avoid repeated SMP calls

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Message-ID: <20230928070545.b7l367qi2q4rynji@vireshk-i7>
Date:   Thu, 28 Sep 2023 12:35:45 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Sumit Gupta <sumitg@...dia.com>
Cc:     rafael@...nel.org, linux-pm@...r.kernel.org,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org,
        treding@...dia.com, jonathanh@...dia.com, bbasu@...dia.com,
        amiettinen@...dia.com
Subject: Re: [Patch v2 1/2] cpufreq: tegra194: save CPU data to avoid
 repeated SMP calls

On 01-09-23, 22:11, Sumit Gupta wrote:
> @@ -131,19 +132,10 @@ static int tegra234_get_cpu_ndiv(u32 cpu, u32 cpuid, u32 clusterid, u64 *ndiv)
>  static void tegra234_set_cpu_ndiv(struct cpufreq_policy *policy, u64 ndiv)
>  {

> +	for_each_cpu_and(cpu, policy->cpus, cpu_online_mask)

(Yes this is existing code, but ..) you don't need to perform AND with
cpu_online_mask as policy->cpus should only contain currently online CPUs.

Please check if you ever see it differently.

> +	data->cpu_data = devm_kcalloc(&pdev->dev, data->soc->num_clusters *
> +				      data->soc->maxcpus_per_cluster,
> +				      sizeof(struct tegra_cpu_data), GFP_KERNEL);

This should be: sizeof(*data->cpu_data) instead. Didn't checkpatch complain
about it ?

-- 
viresh