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cpufreq: Don't create empty /sys/devices/system/cpu/cpufreq directory

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When we don't have any file in cpu/cpufreq directory we shouldn't
create it. Specially with the introduction of per-policy governor
instance patchset, even governors are moved to
cpu/cpu*/cpufreq/governor-name directory and so this directory is
just not required.

Lets have it only when required.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Viresh Kumar 2013-05-17 16:09:09 +05:30 • committed by Rafael J. Wysocki
commit 2361be2366
4 changed files with 56 additions and 6 deletions
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4
include/linux/cpufreq.h
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@ -71,6 +71,10 @@ struct cpufreq_governor;
/* /sys/devices/system/cpu/cpufreq: entry point for global variables */
extern struct kobject *cpufreq_global_kobject;
int cpufreq_get_global_kobject(void);
void cpufreq_put_global_kobject(void);
int cpufreq_sysfs_create_file(const struct attribute *attr);
void cpufreq_sysfs_remove_file(const struct attribute *attr);
#define CPUFREQ_ETERNAL (-1)
struct cpufreq_cpuinfo {