From: John Stultz Date: Wed, 21 Sep 2016 01:42:22 +0000 (-0700) Subject: sched: Add Kconfig option DEFAULT_USE_ENERGY_AWARE to set ENERGY_AWARE feature flag X-Git-Tag: firefly_0821_release~176^2~161 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=fc1d6c8c6a6e7353147bcb02d0236db5714804d2;p=firefly-linux-kernel-4.4.55.git sched: Add Kconfig option DEFAULT_USE_ENERGY_AWARE to set ENERGY_AWARE feature flag The ENERGY_AWARE sched feature flag cannot be set unless CONFIG_SCHED_DEBUG is enabled. So this patch allows the flag to default to true at build time if the config is set. Change-Id: I8835a571fdb7a8f8ee6a54af1e11a69f3b5ce8e6 Signed-off-by: John Stultz --- diff --git a/init/Kconfig b/init/Kconfig index e71e35cf723c..acb6645ffda5 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -1290,6 +1290,16 @@ config SCHED_TUNE If unsure, say N. +config DEFAULT_USE_ENERGY_AWARE + bool "Default to enabling the Energy Aware Scheduler feature" + default n + help + This option defaults the ENERGY_AWARE scheduling feature to true, + as without SCHED_DEBUG set this feature can't be enabled or disabled + via sysctl. + + Say N if unsure. + config SYSFS_DEPRECATED bool "Enable deprecated sysfs features to support old userspace tools" depends on SYSFS diff --git a/kernel/sched/features.h b/kernel/sched/features.h index b634151ce286..55e461055332 100644 --- a/kernel/sched/features.h +++ b/kernel/sched/features.h @@ -73,4 +73,8 @@ SCHED_FEAT(ATTACH_AGE_LOAD, true) * Energy aware scheduling. Use platform energy model to guide scheduling * decisions optimizing for energy efficiency. */ +#ifdef CONFIG_DEFAULT_USE_ENERGY_AWARE +SCHED_FEAT(ENERGY_AWARE, true) +#else SCHED_FEAT(ENERGY_AWARE, false) +#endif