sched: scheduler-driven cpu frequency selection

[firefly-linux-kernel-4.4.55.git] / drivers / cpufreq / Kconfig

diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig
index 659879a56dbac59c7f18e0d2f51393bf9a3e645f..6f2e96cc680ed0b2a0f592a611dec8e7909d12f4 100644 (file)
--- a/drivers/cpufreq/Kconfig
+++ b/drivers/cpufreq/Kconfig
@@ -102,6 +102,14 @@ config CPU_FREQ_DEFAULT_GOV_CONSERVATIVE
          Be aware that not all cpufreq drivers support the conservative
          governor. If unsure have a look at the help section of the
          driver. Fallback governor will be the performance governor.
+
+config CPU_FREQ_DEFAULT_GOV_SCHED
+       bool "sched"
+       select CPU_FREQ_GOV_SCHED
+       help
+         Use the CPUfreq governor 'sched' as default. This scales
+         cpu frequency using CPU utilization estimates from the
+         scheduler.
 endchoice
 
 config CPU_FREQ_GOV_PERFORMANCE
@@ -183,6 +191,18 @@ config CPU_FREQ_GOV_CONSERVATIVE
 
          If in doubt, say N.
 
+config CPU_FREQ_GOV_SCHED
+       bool "'sched' cpufreq governor"
+       depends on CPU_FREQ
+       select CPU_FREQ_GOV_COMMON
+       help
+         'sched' - this governor scales cpu frequency from the
+         scheduler as a function of cpu capacity utilization. It does
+         not evaluate utilization on a periodic basis (as ondemand
+         does) but instead is event-driven by the scheduler.
+
+         If in doubt, say N.
+
 comment "CPU frequency scaling drivers"
 
 config CPUFREQ_DT