Commit 9104bb26 authored by Viresh Kumar's avatar Viresh Kumar Committed by Rafael J. Wysocki

cpufreq: Don't traverse all active policies to find policy for a cpu

We reach here while adding policy for a CPU and enter into the 'if'
block only if a policy already exists for the CPU.

As cpufreq_cpu_data is set for all policy->related_cpus now, when the
policy is first added, we can use that to find the CPU's policy instead
of traversing the list of all active policies.
Acked-by: default avatarSaravana Kannan <skannan@codeaurora.org>
Signed-off-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 3914d379
......@@ -1213,16 +1213,13 @@ static int cpufreq_add_dev(struct device *dev, struct subsys_interface *sif)
return 0;
/* Check if this CPU already has a policy to manage it */
read_lock_irqsave(&cpufreq_driver_lock, flags);
for_each_active_policy(policy) {
if (cpumask_test_cpu(cpu, policy->related_cpus)) {
read_unlock_irqrestore(&cpufreq_driver_lock, flags);
policy = per_cpu(cpufreq_cpu_data, cpu);
if (policy && !policy_is_inactive(policy)) {
WARN_ON(!cpumask_test_cpu(cpu, policy->related_cpus));
ret = cpufreq_add_policy_cpu(policy, cpu, dev);
up_read(&cpufreq_rwsem);
return ret;
}
}
read_unlock_irqrestore(&cpufreq_driver_lock, flags);
/*
* Restore the saved policy when doing light-weight init and fall back
......
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