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cpufreq: qcom-hw: Set CPU affinity of dcvsh interrupts 

In runtime CPU cluster specific dcvsh interrupts may be handled on
unrelated CPU cores, it leads to an issue of too excessive number of
received and handled interrupts, but this is not observed, if CPU
affinity of the interrupt handler is set in accordance to CPU clusters.

The change reduces a number of received interrupts in about 10-100 times.

Signed-off-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
This commit is contained in:
Vladimir Zapolskiy 2021-11-11 17:48:08 +02:00 committed by Viresh Kumar
parent e0e27c3d4e
commit 3ed6dfbd3b
1 changed files with 5 additions and 0 deletions
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5
drivers/cpufreq/qcom-cpufreq-hw.c
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@ -392,6 +392,11 @@ static int qcom_cpufreq_hw_lmh_init(struct cpufreq_policy *policy, int index)
return 0;
}
ret = irq_set_affinity_hint(data->throttle_irq, policy->cpus);
if (ret)
dev_err(&pdev->dev, "Failed to set CPU affinity of %s[%d]\n",
data->irq_name, data->throttle_irq);
return 0;
}