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| author | Lan Tianyu <tianyu.lan@intel.com> | 2013-06-27 15:08:54 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-06-27 21:51:09 +0200 |
| commit | f4fd3797848aa04e72e942c855fd279840a47fe4 (patch) | |
| tree | 41419a82efe0e11be4f2cf870a58b3356e01ce0b /include/linux/cpufreq.h | |
| parent | 7c30ed532cf798a8d924562f2f44d03d7652f7a7 (diff) | |
| download | linux-stable-f4fd3797848aa04e72e942c855fd279840a47fe4.tar.gz linux-stable-f4fd3797848aa04e72e942c855fd279840a47fe4.tar.bz2 linux-stable-f4fd3797848aa04e72e942c855fd279840a47fe4.zip | |
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.h | 3 |
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 */ |