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| author | Rafael J. Wysocki | 2016-02-15 20:20:42 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki | 2016-03-09 14:39:19 +0100 |
| commit | 34e2c555f3e13c90e9284e23d00f03be8a6e06c5 (patch) | |
| tree | c04959660922300f51228923ad6e7e82cf05eefc /kernel/sched/sched.h | |
| parent | cpufreq: Clean up default and fallback governor setup (diff) | |
| download | kernel-qcow2-linux-34e2c555f3e13c90e9284e23d00f03be8a6e06c5.tar.gz kernel-qcow2-linux-34e2c555f3e13c90e9284e23d00f03be8a6e06c5.tar.xz kernel-qcow2-linux-34e2c555f3e13c90e9284e23d00f03be8a6e06c5.zip | |
cpufreq: Add mechanism for registering utilization update callbacks
Introduce a mechanism by which parts of the cpufreq subsystem
("setpolicy" drivers or the core) can register callbacks to be
executed from cpufreq_update_util() which is invoked by the
scheduler's update_load_avg() on CPU utilization changes.
This allows the "setpolicy" drivers to dispense with their timers
and do all of the computations they need and frequency/voltage
adjustments in the update_load_avg() code path, among other things.
The update_load_avg() changes were suggested by Peter Zijlstra.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched/sched.h')
| -rw-r--r-- | kernel/sched/sched.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 10f16374df7f..f042190c8002 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -9,6 +9,7 @@ #include <linux/irq_work.h> #include <linux/tick.h> #include <linux/slab.h> +#include <linux/cpufreq.h> #include "cpupri.h" #include "cpudeadline.h" |