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authorLan Tianyu <tianyu.lan@intel.com>2013-06-27 11:08:54 +0400
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-06-27 23:51:09 +0400
commitf4fd3797848aa04e72e942c855fd279840a47fe4 (patch)
tree41419a82efe0e11be4f2cf870a58b3356e01ce0b /include/linux/cpufreq.h
parent7c30ed532cf798a8d924562f2f44d03d7652f7a7 (diff)
downloadlinux-f4fd3797848aa04e72e942c855fd279840a47fe4.tar.xz
acpi-cpufreq: Add new sysfs attribute freqdomain_cpus
Commits fcf8058 (cpufreq: Simplify cpufreq_add_dev()) and aa77a52 (cpufreq: acpi-cpufreq: Don't set policy->related_cpus from .init()) changed the contents of the "related_cpus" sysfs attribute on systems where acpi-cpufreq is used and user space can't get the list of CPUs which are in the same hardware coordination CPU domain (provided by the ACPI AML method _PSD) via "related_cpus" any more. To make up for that loss add a new sysfs attribute "freqdomian_cpus" for the acpi-cpufreq driver which exposes the list of CPUs in the same domain regardless of whether it is coordinated by hardware or software. [rjw: Changelog, documentation] References: https://bugzilla.kernel.org/show_bug.cgi?id=58761 Reported-by: Jean-Philippe Halimi <jean-philippe.halimi@exascale-computing.eu> Signed-off-by: Lan Tianyu <tianyu.lan@intel.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux/cpufreq.h')
-rw-r--r--include/linux/cpufreq.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index c0bc7374445e..4d7390bc1727 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -439,4 +439,7 @@ void cpufreq_frequency_table_get_attr(struct cpufreq_frequency_table *table,
void cpufreq_frequency_table_update_policy_cpu(struct cpufreq_policy *policy);
void cpufreq_frequency_table_put_attr(unsigned int cpu);
+
+ssize_t cpufreq_show_cpus(const struct cpumask *mask, char *buf);
+
#endif /* _LINUX_CPUFREQ_H */