On 25 June 2013 07:36, Lan Tianyu <tianyu.lan@xxxxxxxxx> wrote:
> diff --git a/Documentation/cpu-freq/user-guide.txt b/Documentation/cpu-freq/user-guide.txt
> index ff2f283..0cc72f7 100644
> --- a/Documentation/cpu-freq/user-guide.txt
> +++ b/Documentation/cpu-freq/user-guide.txt
> @@ -196,6 +196,10 @@ affected_cpus : List of Online CPUs that require software
> related_cpus : List of Online + Offline CPUs that need software
> coordination of frequency.
>
> +freqdomain_cpus : List of Online + Offline CPUs in same CPU dependency
> + domain. (This is only available for acpi-cpufreq
> + driver)
> +
This is generic file, don't add this information here. Add this in
acpi-cpufreq file.
> scaling_driver : Hardware driver for cpufreq.
>
> scaling_cur_freq : Current frequency of the CPU as determined by
> diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c
> index 17e3496..b859997 100644
> --- a/drivers/cpufreq/acpi-cpufreq.c
> +++ b/drivers/cpufreq/acpi-cpufreq.c
> @@ -176,6 +176,16 @@ static struct global_attr global_boost = __ATTR(boost, 0644,
> show_global_boost,
> store_global_boost);
>
> +static ssize_t show_freqdomain_cpus(struct cpufreq_policy *policy, char *buf)
> +{
> + struct acpi_cpufreq_data *data = per_cpu(acfreq_data, policy->cpu);
> + struct acpi_processor_performance *perf = data->acpi_data;
> +
> + return cpufreq_show_cpus(perf->shared_cpu_map, buf);
> +}
I am not sure if this is enough. Check this commit:
aa77a52764a92216b61a6c8079b5c01937c046cd
It had these changes:
diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c
index 937bc28..57a8774 100644
--- a/drivers/cpufreq/acpi-cpufreq.c
+++ b/drivers/cpufreq/acpi-cpufreq.c
@@ -730,7 +730,6 @@ static int acpi_cpufreq_cpu_init(struct
cpufreq_policy *policy)
policy->shared_type == CPUFREQ_SHARED_TYPE_ANY) {
cpumask_copy(policy->cpus, perf->shared_cpu_map);
}
- cpumask_copy(policy->related_cpus, perf->shared_cpu_map);
#ifdef CONFIG_SMP
dmi_check_system(sw_any_bug_dmi_table);
@@ -742,7 +741,6 @@ static int acpi_cpufreq_cpu_init(struct
cpufreq_policy *policy)
if (check_amd_hwpstate_cpu(cpu) && !acpi_pstate_strict) {
cpumask_clear(policy->cpus);
cpumask_set_cpu(cpu, policy->cpus);
- cpumask_copy(policy->related_cpus, cpu_sibling_mask(cpu));
policy->shared_type = CPUFREQ_SHARED_TYPE_HW;
pr_info_once(PFX "overriding BIOS provided _PSD data\n");
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