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| author | Ionela Voinescu <ionela.voinescu@arm.com> | 2020-12-14 12:38:22 +0000 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2020-12-15 19:19:32 +0100 |
| commit | cfdc589f4b5f94bf1a975b4a67d8163d533f6e9b (patch) | |
| tree | bbfd34bf9f264478ee46ce36f97d988225324626 /drivers/cpufreq/cppc_cpufreq.c | |
| parent | bf76bb208f2b653306f2fc8f9c2a22f9890702bd (diff) | |
| download | linux-cfdc589f4b5f94bf1a975b4a67d8163d533f6e9b.tar.bz2 | |
cppc_cpufreq: expose information on frequency domains
Use the existing sysfs attribute "freqdomain_cpus" to expose
information to userspace about CPUs in the same frequency domain.
Signed-off-by: Ionela Voinescu <ionela.voinescu@arm.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Tested-by: Mian Yousaf Kaukab <ykaukab@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq/cppc_cpufreq.c')
| -rw-r--r-- | drivers/cpufreq/cppc_cpufreq.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/cpufreq/cppc_cpufreq.c b/drivers/cpufreq/cppc_cpufreq.c index f15a44c8b6b7..40b58d2dbbc6 100644 --- a/drivers/cpufreq/cppc_cpufreq.c +++ b/drivers/cpufreq/cppc_cpufreq.c @@ -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", }; |