コード例 #1
0
static int cpufreq_stat_notifier_policy(struct notifier_block *nb,
		unsigned long val, void *data)
{
	int ret;
	struct cpufreq_policy *policy = data;
	struct cpufreq_frequency_table *table;
	unsigned int cpu = policy->cpu;

	if (val == CPUFREQ_UPDATE_POLICY_CPU) {
		cpufreq_stats_update_policy_cpu(policy);
		return 0;
	}

	if (val != CPUFREQ_NOTIFY)
		return 0;
	table = cpufreq_frequency_get_table(cpu);
	if (!table)
		return 0;

	if (!per_cpu(all_cpufreq_stats, cpu))
		cpufreq_allstats_create(cpu);

	ret = cpufreq_stats_create_table(policy, table);
	if (ret)
		return ret;
	return 0;
}
コード例 #2
0
static int __init cpufreq_stats_init(void)
{
	int ret;
	unsigned int cpu;

	spin_lock_init(&cpufreq_stats_lock);
	ret = cpufreq_register_notifier(&notifier_policy_block,
				CPUFREQ_POLICY_NOTIFIER);
	if (ret)
		return ret;

	for_each_online_cpu(cpu)
		cpufreq_stats_create_table(cpu);

	ret = cpufreq_register_notifier(&notifier_trans_block,
				CPUFREQ_TRANSITION_NOTIFIER);
	if (ret) {
		cpufreq_unregister_notifier(&notifier_policy_block,
				CPUFREQ_POLICY_NOTIFIER);
		for_each_online_cpu(cpu)
			cpufreq_stats_free_table(cpu);
		return ret;
	}

	return 0;
}
コード例 #3
0
static int __init cpufreq_stats_init(void)
{
	int ret;
	unsigned int cpu;

	spin_lock_init(&cpufreq_stats_lock);
	ret = cpufreq_register_notifier(&notifier_policy_block,
				CPUFREQ_POLICY_NOTIFIER);
	if (ret)
		return ret;

	for_each_online_cpu(cpu)
		cpufreq_stats_create_table(cpu);

	ret = cpufreq_register_notifier(&notifier_trans_block,
				CPUFREQ_TRANSITION_NOTIFIER);
	if (ret) {
		cpufreq_unregister_notifier(&notifier_policy_block,
				CPUFREQ_POLICY_NOTIFIER);
		for_each_online_cpu(cpu)
			cpufreq_stats_free_table(cpu);
		return ret;
	}

	create_all_freq_table();
	ret = cpufreq_sysfs_create_file(&_attr_all_time_in_state.attr);
	if (ret)
		pr_warn("Cannot create sysfs file for cpufreq stats\n");

	ret = cpufreq_sysfs_create_file(&_attr_current_in_state.attr);
	if (ret)
		pr_warn("Cannot create sysfs file for cpufreq current stats\n");

	return 0;
}
コード例 #4
0
static int cpufreq_stats_create_table_cpu(unsigned int cpu)
{
	struct cpufreq_policy *policy;
	struct cpufreq_frequency_table *table;
	int ret = -ENODEV, i, count = 0;

	policy = cpufreq_cpu_get(cpu);
	if (!policy)
		return -ENODEV;

	table = cpufreq_frequency_get_table(cpu);
	if (!table)
		goto out;

	for (i = 0; table[i].frequency != CPUFREQ_TABLE_END; i++) {
		unsigned int freq = table[i].frequency;

		if (freq == CPUFREQ_ENTRY_INVALID)
			continue;
		count++;
	}

	if (!per_cpu(all_cpufreq_stats, cpu))
		cpufreq_allstats_create(cpu, table, count);

	if (!per_cpu(cpufreq_power_stats, cpu))
		cpufreq_powerstats_create(cpu, table, count);

	ret = cpufreq_stats_create_table(policy, table, count);

out:
	cpufreq_cpu_put(policy);
	return ret;
}
コード例 #5
0
static int cpufreq_stat_notifier_policy(struct notifier_block *nb,
		unsigned long val, void *data)
{
	int ret, count = 0, i;
	struct cpufreq_policy *policy = data;
	struct cpufreq_frequency_table *table;
	unsigned int cpu = policy->cpu;
	if (val != CPUFREQ_NOTIFY)
		return 0;
	table = cpufreq_frequency_get_table(cpu);
	if (!table)
		return 0;

	for (i = 0; table[i].frequency != CPUFREQ_TABLE_END; i++) {
		unsigned int freq = table[i].frequency;

		if (freq == CPUFREQ_ENTRY_INVALID)
			continue;
		count++;
	}

	if (!per_cpu(all_cpufreq_stats, cpu))
		cpufreq_allstats_create(cpu, table, count);

	if (!per_cpu(cpufreq_power_stats, cpu))
		cpufreq_powerstats_create(cpu, table, count);

	ret = cpufreq_stats_create_table(policy, table, count);
	if (ret)
		return ret;
	return 0;
}
コード例 #6
0
static int cpufreq_stat_notifier_policy(struct notifier_block *nb,
		unsigned long val, void *data)
{
	int ret;
	struct cpufreq_policy *policy = data;
	struct cpufreq_frequency_table *table;
	unsigned int cpu = policy->cpu;
	if (val != CPUFREQ_NOTIFY)
		return 0;
	table = cpufreq_frequency_get_table(cpu);
	if (!table)
		return 0;
	ret = cpufreq_stats_create_table(policy, table);

	return (ret == -EBUSY)? 0 : ret;
}
コード例 #7
0
static int cpufreq_stats_create_table_cpu(unsigned int cpu)
{
  struct cpufreq_policy *policy;
  struct cpufreq_frequency_table *table;
  int ret = -ENODEV;
  policy = cpufreq_cpu_get(cpu);
  if (!policy)
    return -ENODEV;
  
  table = cpufreq_frequency_get_table(cpu);
  if (!table)
    goto out;
  
  ret = cpufreq_stats_create_table(policy, table);
  
out:
    cpufreq_cpu_put(policy);
    return ret;
}