From mboxrd@z Thu Jan  1 00:00:00 1970
From: Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH v5 7/7][Update] cpufreq: schedutil: New governor based on
 scheduler utilization data
Date: Thu, 17 Mar 2016 12:36:22 +0100
Message-ID: <20160317113622.GS6344@twins.programming.kicks-ass.net>
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To: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Linux PM list <linux-pm@vger.kernel.org>, Juri Lelli <juri.lelli@arm.com>, Steve Muckle <steve.muckle@linaro.org>, ACPI Devel Maling List <linux-acpi@vger.kernel.org>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>, Viresh Kumar <viresh.kumar@linaro.org>, Vincent Guittot <vincent.guittot@linaro.org>, Michael Turquette <mturquette@baylibre.com>, Ingo Molnar <mingo@kernel.org>
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On Thu, Mar 17, 2016 at 01:01:45AM +0100, Rafael J. Wysocki wrote:
> +	} else if (sg_policy->next_freq != next_freq) {
> +		sg_policy->work_cpu = smp_processor_id();
> +		irq_work_queue(&sg_policy->irq_work);
> +	}
> +}

> +static void sugov_irq_work(struct irq_work *irq_work)
> +{
> +	struct sugov_policy *sg_policy;
> +
> +	sg_policy = container_of(irq_work, struct sugov_policy, irq_work);
> +	schedule_work_on(sg_policy->work_cpu, &sg_policy->work);
> +}

Not sure I see the point of ->work_cpu, irq_work_queue() does guarantee
the same CPU, so the above is identical to:

	schedule_work_on(smp_processor_id(), &sq_policy->work);