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[CPUFREQ] Factor out symlink creation from cpufreq_add_dev

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Signed-off-by: Dave Jones <davej@redhat.com>
This commit is contained in:
Dave Jones
2009-07-08 17:35:39 -04:00
parent 059019a3c3
commit 19d6f7ec3e
1 changed files with 31 additions and 20 deletions
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51
drivers/cpufreq/cpufreq.c
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@@ -756,6 +756,34 @@ static struct kobj_type ktype_cpufreq = {
.release = cpufreq_sysfs_release, .release = cpufreq_sysfs_release,
}; };
/* symlink affected CPUs */
int cpufreq_add_dev_symlink(unsigned int cpu, struct cpufreq_policy *policy)
{
unsigned int j;
int ret = 0;
for_each_cpu(j, policy->cpus) {
struct cpufreq_policy *managed_policy;
struct sys_device *cpu_sys_dev;
if (j == cpu)
continue;
if (!cpu_online(j))
continue;
dprintk("CPU %u already managed, adding link\n", j);
managed_policy = cpufreq_cpu_get(cpu);
cpu_sys_dev = get_cpu_sysdev(j);
ret = sysfs_create_link(&cpu_sys_dev->kobj, &policy->kobj,
"cpufreq");
if (ret) {
cpufreq_cpu_put(managed_policy);
return ret;
}
}
return ret;
}
/** /**
* cpufreq_add_dev - add a CPU device * cpufreq_add_dev - add a CPU device
@@ -929,26 +957,9 @@ static int cpufreq_add_dev(struct sys_device *sys_dev)
} }
spin_unlock_irqrestore(&cpufreq_driver_lock, flags); spin_unlock_irqrestore(&cpufreq_driver_lock, flags);
/* symlink affected CPUs */ ret = cpufreq_add_dev_symlink(cpu, policy->cpus, policy);
for_each_cpu(j, policy->cpus) { if (ret)
struct cpufreq_policy *managed_policy; goto err_out_unregister;
struct sys_device *cpu_sys_dev;
if (j == cpu)
continue;
if (!cpu_online(j))
continue;
dprintk("CPU %u already managed, adding link\n", j);
managed_policy = cpufreq_cpu_get(cpu);
cpu_sys_dev = get_cpu_sysdev(j);
ret = sysfs_create_link(&cpu_sys_dev->kobj, &policy->kobj,
"cpufreq");
if (ret) {
cpufreq_cpu_put(managed_policy);
goto err_out_unregister;
}
}
policy->governor = NULL; /* to assure that the starting sequence is policy->governor = NULL; /* to assure that the starting sequence is
* run in cpufreq_set_policy */ * run in cpufreq_set_policy */