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Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq

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* master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq:
  [CPUFREQ] Fix typos in powernow-k8 printk's.
  [CPUFREQ] Restore previously used governor on a hot-replugged CPU
  [CPUFREQ] bugfix cpufreq in combination with performance governor
  [CPUFREQ] powernow-k8 compile fix.
  [CPUFREQ] the overdue removal of X86_SPEEDSTEP_CENTRINO_ACPI
  [CPUFREQ] Longhaul - Option to disable ACPI C3 support

Fixed up arch/i386/kernel/cpu/cpufreq/powernow-k8.c due to revert that
got fixed differently in the cpufreq branch.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Linus Torvalds
2007-07-13 16:06:30 -07:00
parent e030dbf91a 9a60ddbcb7
commit af09f1e4b3
7 changed files with 67 additions and 320 deletions
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drivers/cpufreq/cpufreq.c
+22 -7
View File
@@ -39,6 +39,10 @@
*/
static struct cpufreq_driver *cpufreq_driver;
static struct cpufreq_policy *cpufreq_cpu_data[NR_CPUS];
#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];
#endif
static DEFINE_SPINLOCK(cpufreq_driver_lock);
/*
@@ -770,9 +774,17 @@ static int cpufreq_add_dev (struct sys_device * sys_dev)
}
policy->user_policy.min = policy->cpuinfo.min_freq;
policy->user_policy.max = policy->cpuinfo.max_freq;
policy->user_policy.governor = policy->governor;
#ifdef CONFIG_SMP
#ifdef CONFIG_HOTPLUG_CPU
if (cpufreq_cpu_governor[cpu]){
policy->governor = cpufreq_cpu_governor[cpu];
dprintk("Restoring governor %s for cpu %d\n",
policy->governor->name, cpu);
}
#endif
for_each_cpu_mask(j, policy->cpus) {
if (cpu == j)
continue;
@@ -873,6 +885,7 @@ static int cpufreq_add_dev (struct sys_device * sys_dev)
/* set default policy */
ret = __cpufreq_set_policy(policy, &new_policy);
policy->user_policy.policy = policy->policy;
policy->user_policy.governor = policy->governor;
unlock_policy_rwsem_write(cpu);
@@ -969,6 +982,11 @@ static int __cpufreq_remove_dev (struct sys_device * sys_dev)
}
#ifdef CONFIG_SMP
#ifdef CONFIG_HOTPLUG_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
@@ -989,6 +1007,9 @@ static int __cpufreq_remove_dev (struct sys_device * sys_dev)
if (j == cpu)
continue;
dprintk("removing link for cpu %u\n", j);
#ifdef CONFIG_HOTPLUG_CPU
cpufreq_cpu_governor[j] = data->governor;
#endif
cpu_sys_dev = get_cpu_sysdev(j);
sysfs_remove_link(&cpu_sys_dev->kobj, "cpufreq");
cpufreq_cpu_put(data);
@@ -1687,7 +1708,6 @@ static int cpufreq_cpu_callback(struct notifier_block *nfb,
{
unsigned int cpu = (unsigned long)hcpu;
struct sys_device *sys_dev;
struct cpufreq_policy *policy;
sys_dev = get_cpu_sysdev(cpu);
if (sys_dev) {
@@ -1701,11 +1721,6 @@ static int cpufreq_cpu_callback(struct notifier_block *nfb,
if (unlikely(lock_policy_rwsem_write(cpu)))
BUG();
policy = cpufreq_cpu_data[cpu];
if (policy) {
__cpufreq_driver_target(policy, policy->min,
CPUFREQ_RELATION_H);
}
__cpufreq_remove_dev(sys_dev);
break;
case CPU_DOWN_FAILED: