cpufreq: postfix policy directory with the first CPU in related_cpus

The sysfs policy directory is postfixed currently with the CPU number
for which the policy was created, which isn't necessarily the first CPU
in related_cpus mask.

To make it more consistent and predictable, lets postfix the policy with
the first cpu in related-cpus mask.

Suggested-by: Saravana Kannan <skannan@codeaurora.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Saravana Kannan <skannan@codeaurora.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 4fa2215..7c48e73 100644 (file)
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -1022,7 +1022,6 @@ static struct cpufreq_policy *cpufreq_policy_alloc(unsigned int cpu)
 {
        struct device *dev = get_cpu_device(cpu);
        struct cpufreq_policy *policy;
-       int ret;
 
        if (WARN_ON(!dev))
                return NULL;
@@ -1040,13 +1039,7 @@ static struct cpufreq_policy *cpufreq_policy_alloc(unsigned int cpu)
        if (!zalloc_cpumask_var(&policy->real_cpus, GFP_KERNEL))
                goto err_free_rcpumask;
 
-       ret = kobject_init_and_add(&policy->kobj, &ktype_cpufreq,
-                                  cpufreq_global_kobject, "policy%u", cpu);
-       if (ret) {
-               pr_err("%s: failed to init policy->kobj: %d\n", __func__, ret);
-               goto err_free_real_cpus;
-       }
-
+       kobject_init(&policy->kobj, &ktype_cpufreq);
        INIT_LIST_HEAD(&policy->policy_list);
        init_rwsem(&policy->rwsem);
        spin_lock_init(&policy->transition_lock);
@@ -1057,8 +1050,6 @@ static struct cpufreq_policy *cpufreq_policy_alloc(unsigned int cpu)
        policy->cpu = cpu;
        return policy;
 
-err_free_real_cpus:
-       free_cpumask_var(policy->real_cpus);
 err_free_rcpumask:
        free_cpumask_var(policy->related_cpus);
 err_free_cpumask:
@@ -1163,6 +1154,16 @@ static int cpufreq_online(unsigned int cpu)
                cpumask_copy(policy->related_cpus, policy->cpus);
                /* Remember CPUs present at the policy creation time. */
                cpumask_and(policy->real_cpus, policy->cpus, cpu_present_mask);
+
+               /* Name and add the kobject */
+               ret = kobject_add(&policy->kobj, cpufreq_global_kobject,
+                                 "policy%u",
+                                 cpumask_first(policy->related_cpus));
+               if (ret) {
+                       pr_err("%s: failed to add policy->kobj: %d\n", __func__,
+                              ret);
+                       goto out_exit_policy;
+               }
        }
 
        /*