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cpuidle: menu: Lookup CPU runqueues less

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The menu governer makes separate lookups of the CPU runqueue to get
load and number of IO waiters but it can be done with a single lookup.

Signed-off-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Mel Gorman 2014-08-06 14:19:21 +01:00 • committed by Rafael J. Wysocki
commit 372ba8cb46
4 changed files with 15 additions and 19 deletions
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3
include/linux/sched.h
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@ -168,8 +168,7 @@ extern int nr_processes(void);
extern unsigned long nr_running(void);
extern unsigned long nr_iowait(void);
extern unsigned long nr_iowait_cpu(int cpu);
extern unsigned long this_cpu_load(void);
extern void get_iowait_load(unsigned long *nr_waiters, unsigned long *load);
extern void calc_global_load(unsigned long ticks);
extern void update_cpu_load_nohz(void);