2020-03-28 12:59:34

by Rafael J. Wysocki

[permalink] [raw]
Subject: [PATCH 1/2] cpufreq: intel_pstate: Select schedutil as the default governor

From: "Rafael J. Wysocki" <[email protected]>

Modify cpufreq Kconfig to select schedutil as the default governor
if the intel_pstate driver has been selected and SMP support is
enabled (because schedutil depends on SMP).

Also select schedutil as well as the performance governor from the
intel_pstate Kconfig section to ensure the equivalence of the passive
and active mode governor configuration options.

Signed-off-by: Rafael J. Wysocki <[email protected]>
---
drivers/cpufreq/Kconfig | 3 ++-
drivers/cpufreq/Kconfig.x86 | 2 ++
2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig
index bff5295016ae..9f0e7e79ed14 100644
--- a/drivers/cpufreq/Kconfig
+++ b/drivers/cpufreq/Kconfig
@@ -37,10 +37,11 @@ config CPU_FREQ_STAT
choice
prompt "Default CPUFreq governor"
default CPU_FREQ_DEFAULT_GOV_USERSPACE if ARM_SA1100_CPUFREQ || ARM_SA1110_CPUFREQ
+ default CPU_FREQ_DEFAULT_GOV_SCHEDUTIL if X86_INTEL_PSTATE && SMP
default CPU_FREQ_DEFAULT_GOV_PERFORMANCE
help
This option sets which CPUFreq governor shall be loaded at
- startup. If in doubt, select 'performance'.
+ startup. If in doubt, use the default setting.

config CPU_FREQ_DEFAULT_GOV_PERFORMANCE
bool "performance"
diff --git a/drivers/cpufreq/Kconfig.x86 b/drivers/cpufreq/Kconfig.x86
index a6528388952e..758c69a2e1bf 100644
--- a/drivers/cpufreq/Kconfig.x86
+++ b/drivers/cpufreq/Kconfig.x86
@@ -8,6 +8,8 @@ config X86_INTEL_PSTATE
depends on X86
select ACPI_PROCESSOR if ACPI
select ACPI_CPPC_LIB if X86_64 && ACPI && SCHED_MC_PRIO
+ select CPU_FREQ_GOV_PERFORMANCE
+ select CPU_FREQ_GOV_SCHEDUTIL if SMP
help
This driver provides a P state for Intel core processors.
The driver implements an internal governor and will become
--
2.16.4