cppc_cpufreq: expose information on frequency domains (cfdc589f) · Commits · 戴 / test

Documentation/ABI/testing/sysfs-devices-system-cpu

+2 −1

Original line number	Diff line number	Diff line
		@@ -264,7 +264,8 @@ Description: Discover CPUs in the same CPU frequency coordination domain
		attribute is useful for user space DVFS controllers to get better
		power/performance results for platforms using acpi-cpufreq.

		This file is only present if the acpi-cpufreq driver is in use.
		This file is only present if the acpi-cpufreq or the cppc-cpufreq
		drivers are in use.


		What: /sys/devices/system/cpu/cpu*/cache/index3/cache_disable_{0,1}

+14 −0

Original line number	Diff line number	Diff line
		@@ -402,6 +402,19 @@ static int cppc_cpufreq_set_boost(struct cpufreq_policy *policy, int state)
		return 0;
		}

		static ssize_t show_freqdomain_cpus(struct cpufreq_policy policy, char buf)
		{
		unsigned int cpu = policy->cpu;

		return cpufreq_show_cpus(all_cpu_data[cpu]->shared_cpu_map, buf);
		}
		cpufreq_freq_attr_ro(freqdomain_cpus);

		static struct freq_attr *cppc_cpufreq_attr[] = {
		&freqdomain_cpus,
		NULL,
		};

		static struct cpufreq_driver cppc_cpufreq_driver = {
		.flags = CPUFREQ_CONST_LOOPS,
		.verify = cppc_verify_policy,
		@@ -410,6 +423,7 @@ static struct cpufreq_driver cppc_cpufreq_driver = {
		.init = cppc_cpufreq_cpu_init,
		.stop_cpu = cppc_cpufreq_stop_cpu,
		.set_boost = cppc_cpufreq_set_boost,
		.attr = cppc_cpufreq_attr,
		.name = "cppc_cpufreq",
		};