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x86: Deactivate kernel options with extra overhead

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Deactivate CONFIG_CONTEXT_TRACKING_USER_FORCE: Force user context
tracking: This is a testing feature which should not be activate in
production environments according to the Kconfig help. It adds an extra
overhead.

Deactivate CONFIG_RCU_NOCB_CPU_DEFAULT_ALL: Offload RCU callback
processing from all CPUs by default: This option should only be used in
aggressive HPC or real-time workloads which we do not have in OpenWrt.
For normal workloads it increases the number of context switches.

In the default Arch Linux kernel both options are not activated.

Fixes: 31111680f6 ("x86: switch config to a tickless kernel")
Link: https://github.com/openwrt/openwrt/pull/17057
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
(cherry picked from commit ed52345445)
Link: https://github.com/openwrt/openwrt/pull/17097
Signed-off-by: Petr Štetiar <ynezz@true.cz>
This commit is contained in:
Hauke Mehrtens 2024-11-24 14:39:57 +01:00 committed by Petr Štetiar
parent 4779e954fa
commit 005f086752
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1 changed files with 2 additions and 2 deletions
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4
target/linux/x86/config-6.6
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@ -46,7 +46,7 @@ CONFIG_COMPAT_32=y
CONFIG_COMPAT_32BIT_TIME=y
# CONFIG_COMPAT_VDSO is not set
CONFIG_CONSOLE_TRANSLATIONS=y
CONFIG_CONTEXT_TRACKING_USER_FORCE=y
# CONFIG_CONTEXT_TRACKING_USER_FORCE is not set
# CONFIG_CPU5_WDT is not set
CONFIG_CPU_FREQ=y
CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
@ -334,7 +334,7 @@ CONFIG_PTP_1588_CLOCK_OPTIONAL=y
CONFIG_RANDSTRUCT_NONE=y
CONFIG_RATIONAL=y
CONFIG_RCU_LAZY=y
CONFIG_RCU_NOCB_CPU_DEFAULT_ALL=y
# CONFIG_RCU_NOCB_CPU_DEFAULT_ALL is not set
CONFIG_RD_BZIP2=y
CONFIG_RD_GZIP=y
CONFIG_RETHUNK=y