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[CPUFREQ] Do not set policy for offline cpus

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Suspend/Resume fails on multi socket, multi core systems because the cpufreq
code erroneously sets the per_cpu policy_cpu value when a logical cpu is
offline.

This most notably results in missing sysfs files that are used to set the
cpu frequencies of the various cpus.

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Dave Jones <davej@redhat.com>
This commit is contained in:
Prarit Bhargava 2009-08-03 10:58:11 -04:00 committed by Dave Jones
parent 26d204afa1
commit 42c74b84c6
1 changed files with 2 additions and 0 deletions
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2
drivers/cpufreq/cpufreq.c
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@ -924,6 +924,8 @@ static int cpufreq_add_dev(struct sys_device *sys_dev)
spin_lock_irqsave(&cpufreq_driver_lock, flags); spin_lock_irqsave(&cpufreq_driver_lock, flags);
for_each_cpu(j, policy->cpus) { for_each_cpu(j, policy->cpus) {
if (!cpu_online(j))
continue;
per_cpu(cpufreq_cpu_data, j) = policy; per_cpu(cpufreq_cpu_data, j) = policy;
per_cpu(policy_cpu, j) = policy->cpu; per_cpu(policy_cpu, j) = policy->cpu;
} }