Thread (4 messages) 4 messages, 1 author, 2020-02-19
STALE2305d
Revisions (3)
  1. v1 [diff vs current]
  2. v2 current
  3. v2 [diff vs current]

[PATCH 2/2] ARM: exynos_defconfig: Enable SCHED_MC and ENERGY_MODEL

From: lukasz.luba@arm.com
Date: 2020-02-19 09:59:10
Also in: linux-devicetree, linux-pm, linux-samsung-soc, lkml
Subsystem: arm port, the rest · Maintainers: Russell King, Linus Torvalds

From: Lukasz Luba <lukasz.luba@arm.com>

The Energy Model (EM) is needed to run Energy Aware Scheduler (EAS).
Enable ENERGY_MODEL to make that happen. This will increase energy
efficiency of the big.LITTLE platform by smart decisions in scheduling
tasks in non-heavy workloads.

Add SCHED_MC in order to create another level in scheduling domains: 'MC'.
This improves scheduler's decisions on platforms with CPU clusters, such
as big.LITTLE.

Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
---
 arch/arm/configs/exynos_defconfig | 2 ++
 1 file changed, 2 insertions(+)
diff --git a/arch/arm/configs/exynos_defconfig b/arch/arm/configs/exynos_defconfig
index c8e0c14092e8..90d376eb333b 100644
--- a/arch/arm/configs/exynos_defconfig
+++ b/arch/arm/configs/exynos_defconfig
@@ -8,6 +8,7 @@ CONFIG_PERF_EVENTS=y
 CONFIG_ARCH_EXYNOS=y
 CONFIG_CPU_ICACHE_MISMATCH_WORKAROUND=y
 CONFIG_SMP=y
+CONFIG_SCHED_MC=y
 CONFIG_BIG_LITTLE=y
 CONFIG_NR_CPUS=8
 CONFIG_HIGHMEM=y
@@ -17,6 +18,7 @@ CONFIG_ZBOOT_ROM_BSS=0x0
 CONFIG_ARM_APPENDED_DTB=y
 CONFIG_ARM_ATAG_DTB_COMPAT=y
 CONFIG_CMDLINE="root=/dev/ram0 rw ramdisk=8192 initrd=0x41000000,8M console=ttySAC1,115200 init=/linuxrc mem=256M"
+CONFIG_ENERGY_MODEL=y
 CONFIG_CPU_FREQ=y
 CONFIG_CPU_FREQ_STAT=y
 CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
-- 
2.17.1


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