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Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq

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* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq:
  [CPUFREQ] cpufreq: remove CVS keywords
  [CPUFREQ] change cpu freq arrays to per_cpu variables
This commit is contained in:
Linus Torvalds
2008-07-21 15:10:37 -07:00
parent eb4225b2da 48adcf148c
commit 6d52dcbe56
5 changed files with 42 additions and 43 deletions
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45
drivers/cpufreq/cpufreq.c
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@@ -38,10 +38,10 @@
* also protects the cpufreq_cpu_data array.
*/
static struct cpufreq_driver *cpufreq_driver;
static struct cpufreq_policy *cpufreq_cpu_data[NR_CPUS];
static DEFINE_PER_CPU(struct cpufreq_policy *, cpufreq_cpu_data);
#ifdef CONFIG_HOTPLUG_CPU
/* This one keeps track of the previously set governor of a removed CPU */
static struct cpufreq_governor *cpufreq_cpu_governor[NR_CPUS];
static DEFINE_PER_CPU(struct cpufreq_governor *, cpufreq_cpu_governor);
#endif
static DEFINE_SPINLOCK(cpufreq_driver_lock);
@@ -135,7 +135,7 @@ struct cpufreq_policy *cpufreq_cpu_get(unsigned int cpu)
struct cpufreq_policy *data;
unsigned long flags;
if (cpu >= NR_CPUS)
if (cpu >= nr_cpu_ids)
goto err_out;
/* get the cpufreq driver */
@@ -149,7 +149,7 @@ struct cpufreq_policy *cpufreq_cpu_get(unsigned int cpu)
/* get the CPU */
data = cpufreq_cpu_data[cpu];
data = per_cpu(cpufreq_cpu_data, cpu);
if (!data)
goto err_out_put_module;
@@ -327,7 +327,7 @@ void cpufreq_notify_transition(struct cpufreq_freqs *freqs, unsigned int state)
dprintk("notification %u of frequency transition to %u kHz\n",
state, freqs->new);
policy = cpufreq_cpu_data[freqs->cpu];
policy = per_cpu(cpufreq_cpu_data, freqs->cpu);
switch (state) {
case CPUFREQ_PRECHANGE:
@@ -828,8 +828,8 @@ static int cpufreq_add_dev(struct sys_device *sys_dev)
#ifdef CONFIG_SMP
#ifdef CONFIG_HOTPLUG_CPU
if (cpufreq_cpu_governor[cpu]){
policy->governor = cpufreq_cpu_governor[cpu];
if (per_cpu(cpufreq_cpu_governor, cpu)) {
policy->governor = per_cpu(cpufreq_cpu_governor, cpu);
dprintk("Restoring governor %s for cpu %d\n",
policy->governor->name, cpu);
}
@@ -854,7 +854,7 @@ static int cpufreq_add_dev(struct sys_device *sys_dev)
spin_lock_irqsave(&cpufreq_driver_lock, flags);
managed_policy->cpus = policy->cpus;
cpufreq_cpu_data[cpu] = managed_policy;
per_cpu(cpufreq_cpu_data, cpu) = managed_policy;
spin_unlock_irqrestore(&cpufreq_driver_lock, flags);
dprintk("CPU already managed, adding link\n");
@@ -899,7 +899,7 @@ static int cpufreq_add_dev(struct sys_device *sys_dev)
spin_lock_irqsave(&cpufreq_driver_lock, flags);
for_each_cpu_mask(j, policy->cpus) {
cpufreq_cpu_data[j] = policy;
per_cpu(cpufreq_cpu_data, j) = policy;
per_cpu(policy_cpu, j) = policy->cpu;
}
spin_unlock_irqrestore(&cpufreq_driver_lock, flags);
@@ -946,7 +946,7 @@ static int cpufreq_add_dev(struct sys_device *sys_dev)
err_out_unregister:
spin_lock_irqsave(&cpufreq_driver_lock, flags);
for_each_cpu_mask(j, policy->cpus)
cpufreq_cpu_data[j] = NULL;
per_cpu(cpufreq_cpu_data, j) = NULL;
spin_unlock_irqrestore(&cpufreq_driver_lock, flags);
kobject_put(&policy->kobj);
@@ -989,7 +989,7 @@ static int __cpufreq_remove_dev(struct sys_device *sys_dev)
dprintk("unregistering CPU %u\n", cpu);
spin_lock_irqsave(&cpufreq_driver_lock, flags);
data = cpufreq_cpu_data[cpu];
data = per_cpu(cpufreq_cpu_data, cpu);
if (!data) {
spin_unlock_irqrestore(&cpufreq_driver_lock, flags);
@@ -997,7 +997,7 @@ static int __cpufreq_remove_dev(struct sys_device *sys_dev)
unlock_policy_rwsem_write(cpu);
return -EINVAL;
}
cpufreq_cpu_data[cpu] = NULL;
per_cpu(cpufreq_cpu_data, cpu) = NULL;
#ifdef CONFIG_SMP
@@ -1019,19 +1019,19 @@ static int __cpufreq_remove_dev(struct sys_device *sys_dev)
#ifdef CONFIG_SMP
#ifdef CONFIG_HOTPLUG_CPU
cpufreq_cpu_governor[cpu] = data->governor;
per_cpu(cpufreq_cpu_governor, cpu) = data->governor;
#endif
/* if we have other CPUs still registered, we need to unlink them,
* or else wait_for_completion below will lock up. Clean the
* cpufreq_cpu_data[] while holding the lock, and remove the sysfs
* links afterwards.
* per_cpu(cpufreq_cpu_data) while holding the lock, and remove
* the sysfs links afterwards.
*/
if (unlikely(cpus_weight(data->cpus) > 1)) {
for_each_cpu_mask(j, data->cpus) {
if (j == cpu)
continue;
cpufreq_cpu_data[j] = NULL;
per_cpu(cpufreq_cpu_data, j) = NULL;
}
}
@@ -1043,7 +1043,7 @@ static int __cpufreq_remove_dev(struct sys_device *sys_dev)
continue;
dprintk("removing link for cpu %u\n", j);
#ifdef CONFIG_HOTPLUG_CPU
cpufreq_cpu_governor[j] = data->governor;
per_cpu(cpufreq_cpu_governor, j) = data->governor;
#endif
cpu_sys_dev = get_cpu_sysdev(j);
sysfs_remove_link(&cpu_sys_dev->kobj, "cpufreq");
@@ -1153,7 +1153,7 @@ EXPORT_SYMBOL(cpufreq_quick_get);
static unsigned int __cpufreq_get(unsigned int cpu)
{
struct cpufreq_policy *policy = cpufreq_cpu_data[cpu];
struct cpufreq_policy *policy = per_cpu(cpufreq_cpu_data, cpu);
unsigned int ret_freq = 0;
if (!cpufreq_driver->get)
@@ -1822,16 +1822,19 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data)
cpufreq_driver = driver_data;
spin_unlock_irqrestore(&cpufreq_driver_lock, flags);
ret = sysdev_driver_register(&cpu_sysdev_class,&cpufreq_sysdev_driver);
ret = sysdev_driver_register(&cpu_sysdev_class,
&cpufreq_sysdev_driver);
if ((!ret) && !(cpufreq_driver->flags & CPUFREQ_STICKY)) {
int i;
ret = -ENODEV;
/* check for at least one working CPU */
for (i=0; i<NR_CPUS; i++)
if (cpufreq_cpu_data[i])
for (i = 0; i < nr_cpu_ids; i++)
if (cpu_possible(i) && per_cpu(cpufreq_cpu_data, i)) {
ret = 0;
break;
}
/* if all ->init() calls failed, unregister */
if (ret) {