A rather popular problem reported by new users on irc is very
laggy performance out of the box. The default ondemand governor
is too slow to react on increased demand for processing power
without extra tuning. This extra tuning needs extra efforts
from the users and prior knowledge that such tuning might be
necessary.
The most important defconfigs are sun4i_defconfig, sun5i_defconfig
and sun7i_defconfig because they are mentioned in
http://linux-sunxi.org/Linux_Kernel#Compilation
This patch changes defconfigs to have the following set of governors:
1. 'performance' (default)
2. 'userspace' (for benchmarking purposes)
3. 'interactive' (a replacement for 'ondemand' with more sane
default behavior)
One more reason not to use the 'ondemand' governor by default is
that the power saving provided by it is not particularly good:
https://www.mail-archive.com/[email protected]/msg00492.html
https://www.mail-archive.com/[email protected]/msg00678.html
http://www.cubieforums.com/index.php/topic,1413.msg8745.html#msg8745
It basically wastes a lot of performance for almost nothing.
Signed-off-by: Siarhei Siamashka <[email protected]>
---
arch/arm/configs/sun4i_defconfig | 4 ++--
arch/arm/configs/sun5i_defconfig | 4 ++++
arch/arm/configs/sun7i_defconfig | 4 ++--
3 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/arch/arm/configs/sun4i_defconfig b/arch/arm/configs/sun4i_defconfig
index feef899..dcd586d 100644
--- a/arch/arm/configs/sun4i_defconfig
+++ b/arch/arm/configs/sun4i_defconfig
@@ -53,8 +53,8 @@ CONFIG_COMPACTION=y
CONFIG_KSM=y
CONFIG_CMDLINE="mem=448M@0x40000000 console=ttyS0,115200"
CONFIG_CPU_FREQ=y
-CONFIG_CPU_FREQ_STAT=m
-CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
+CONFIG_CPU_FREQ_GOV_USERSPACE=y
+CONFIG_CPU_FREQ_GOV_INTERACTIVE=y
CONFIG_CPU_FREQ_DVFS=y
CONFIG_CPU_IDLE=y
CONFIG_VFP=y
diff --git a/arch/arm/configs/sun5i_defconfig b/arch/arm/configs/sun5i_defconfig
index 18845db..7b0d01d 100644
--- a/arch/arm/configs/sun5i_defconfig
+++ b/arch/arm/configs/sun5i_defconfig
@@ -51,6 +51,10 @@ CONFIG_HIGHMEM=y
CONFIG_COMPACTION=y
CONFIG_KSM=y
CONFIG_CMDLINE="mem=448M@0x40000000 console=ttyS0,115200"
+CONFIG_CPU_FREQ=y
+CONFIG_CPU_FREQ_GOV_USERSPACE=y
+CONFIG_CPU_FREQ_GOV_INTERACTIVE=y
+CONFIG_CPU_FREQ_DVFS=y
CONFIG_VFP=y
CONFIG_NEON=y
CONFIG_BINFMT_MISC=y
diff --git a/arch/arm/configs/sun7i_defconfig b/arch/arm/configs/sun7i_defconfig
index 0bf0811..b463645 100644
--- a/arch/arm/configs/sun7i_defconfig
+++ b/arch/arm/configs/sun7i_defconfig
@@ -54,8 +54,8 @@ CONFIG_COMPACTION=y
CONFIG_KSM=y
CONFIG_CMDLINE="mem=448M@0x40000000 console=ttyS0,115200"
CONFIG_CPU_FREQ=y
-CONFIG_CPU_FREQ_STAT=m
-CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
+CONFIG_CPU_FREQ_GOV_USERSPACE=y
+CONFIG_CPU_FREQ_GOV_INTERACTIVE=y
CONFIG_CPU_FREQ_DVFS=y
CONFIG_CPU_IDLE=y
CONFIG_VFP=y
--
2.4.10
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