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cpufreq: replace cpumask_weight with cpumask_empty where appropriate

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drivers/cpufreq calls cpumask_weight() to check if any bit of a given
cpumask is set. We can do it more efficiently with cpumask_empty() because
cpumask_empty() stops traversing the cpumask as soon as it finds first set
bit, while cpumask_weight() counts all bits unconditionally.

Signed-off-by: Yury Norov <yury.norov@gmail.com>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com> (for SCMI cpufreq driver)
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
This commit is contained in:
Yury Norov 2022-01-23 10:38:47 -08:00 committed by Viresh Kumar
parent ef8ee1cb8f
commit b48cd0d12f
2 changed files with 2 additions and 2 deletions
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2
drivers/cpufreq/qcom-cpufreq-hw.c
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@ -482,7 +482,7 @@ static int qcom_cpufreq_hw_cpu_init(struct cpufreq_policy *policy)
}
qcom_get_related_cpus(index, policy->cpus);
if (!cpumask_weight(policy->cpus)) {
if (cpumask_empty(policy->cpus)) {
dev_err(dev, "Domain-%d failed to get related CPUs\n", index);
ret = -ENOENT;
goto error;

2
drivers/cpufreq/scmi-cpufreq.c
View File

@ -154,7 +154,7 @@ static int scmi_cpufreq_init(struct cpufreq_policy *policy)
* table and opp-shared.
*/
ret = dev_pm_opp_of_get_sharing_cpus(cpu_dev, priv->opp_shared_cpus);
if (ret || !cpumask_weight(priv->opp_shared_cpus)) {
if (ret || cpumask_empty(priv->opp_shared_cpus)) {
/*
* Either opp-table is not set or no opp-shared was found.
* Use the CPU mask from SCMI to designate CPUs sharing an OPP