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Date:   Wed, 15 Nov 2023 11:59:32 +0530
From:   Viresh Kumar <viresh.kumar@linaro.org>
To:     David Dai <davidai@google.com>
Cc:     "Rafael J. Wysocki" <rafael@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Conor Dooley <conor+dt@kernel.org>,
        Sudeep Holla <sudeep.holla@arm.com>,
        Saravana Kannan <saravanak@google.com>,
        Quentin Perret <qperret@google.com>,
        Masami Hiramatsu <mhiramat@google.com>,
        Will Deacon <will@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Vincent Guittot <vincent.guittot@linaro.org>,
        Marc Zyngier <maz@kernel.org>,
        Oliver Upton <oliver.upton@linux.dev>,
        Dietmar Eggemann <dietmar.eggemann@arm.com>,
        Pavan Kondeti <quic_pkondeti@quicinc.com>,
        Gupta Pankaj <pankaj.gupta@amd.com>,
        Mel Gorman <mgorman@suse.de>, kernel-team@android.com,
        linux-pm@vger.kernel.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH v4 2/2] cpufreq: add virtual-cpufreq driver
Message-ID: <20231115062932.vz2tyg6wgux5lx6t@vireshk-i7>
References: <20231111014933.1934562-1-davidai@google.com>
 <20231111014933.1934562-3-davidai@google.com>
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On 10-11-23, 17:49, David Dai wrote:
> diff --git a/drivers/cpufreq/virtual-cpufreq.c b/drivers/cpufreq/virtual-cpufreq.c
> +static unsigned int virt_cpufreq_set_perf(struct cpufreq_policy *policy)
> +{
> +	writel_relaxed(policy->cached_target_freq,

Drivers shouldn't be using the cached_target_freq directly. Use the target freq
or index passed from cpufreq core.

> +static int virt_cpufreq_cpu_exit(struct cpufreq_policy *policy)
> +{
> +	topology_clear_scale_freq_source(SCALE_FREQ_SOURCE_VIRT, policy->related_cpus);
> +	kfree(policy->freq_table);
> +	policy->freq_table = NULL;

No need of doing this. Also the order of above two calls is wrong anyway.

-- 
viresh