static int __cpuinit cpufreq_stat_cpu_callback(struct notifier_block *nfb,
unsigned long action,
void *hcpu)
{
unsigned int cpu = (unsigned long)hcpu;
switch (action) {
case CPU_ONLINE:
case CPU_ONLINE_FROZEN:
cpufreq_update_policy(cpu);
break;
case CPU_DOWN_PREPARE:
case CPU_DOWN_PREPARE_FROZEN:
cpufreq_stats_free_sysfs(cpu);
break;
case CPU_DEAD:
case CPU_DEAD_FROZEN:
cpufreq_stats_free_table(cpu);
break;
case CPU_DOWN_FAILED:
case CPU_DOWN_FAILED_FROZEN:
cpufreq_stats_create_table_cpu(cpu);
break;
}
return NOTIFY_OK;
}
static int cpufreq_stat_notifier_trans(struct notifier_block *nb,
unsigned long val, void *data)
{
struct cpufreq_freqs *freq = data;
struct cpufreq_stats *stat;
int old_index, new_index;
if (val != CPUFREQ_POSTCHANGE)
return 0;
stat = per_cpu(cpufreq_stats_table, freq->cpu);
if (!stat)
return 0;
new_index = freq_table_get_index(stat, freq->new);
if(new_index == -1) {
//quick and dirty fix.
cpufreq_stats_free_sysfs(freq->cpu);
cpufreq_stats_free_table(freq->cpu);
cpufreq_stats_create_table_cpu(freq->cpu);
stat = per_cpu(cpufreq_stats_table, freq->cpu);
if (!stat)
return 0;
new_index = freq_table_get_index(stat, freq->new);
}