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Commit 9e8c0a89 authored by Rafael J. Wysocki's avatar Rafael J. Wysocki
Browse files

cpufreq: governor: Check transition latecy at init time only 



It is not necessary to check the governor's max_transition_latency
attribute every time cpufreq_governor() runs, so check it only if
the event argument is CPUFREQ_GOV_POLICY_INIT.

Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
parent d6ff44d6

drivers/cpufreq/cpufreq.c

+14 −13
Original line number Original line Diff line number Diff line
@@ -2011,6 +2011,7 @@ static int cpufreq_governor(struct cpufreq_policy *policy, unsigned int event) 
	if (!policy->governor)

	if (!policy->governor)

		return -EINVAL;

		return -EINVAL;





	if (event == CPUFREQ_GOV_POLICY_INIT) {

		if (policy->governor->max_transition_latency &&

		if (policy->governor->max_transition_latency &&

		    policy->cpuinfo.transition_latency >

		    policy->cpuinfo.transition_latency >

		    policy->governor->max_transition_latency) {

		    policy->governor->max_transition_latency) {
@@ -2025,9 +2026,9 @@ static int cpufreq_governor(struct cpufreq_policy *policy, unsigned int event) 
			}

			}

		}

		}





	if (event == CPUFREQ_GOV_POLICY_INIT)

		if (!try_module_get(policy->governor->owner))

		if (!try_module_get(policy->governor->owner))

			return -EINVAL;

			return -EINVAL;

	}





	pr_debug("%s: for CPU %u, event %u\n", __func__, policy->cpu, event);

	pr_debug("%s: for CPU %u, event %u\n", __func__, policy->cpu, event);