x86: Deactivate kernel options with extra overhead

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: 3111168 ("x86: switch config to a tickless kernel") Link: openwrt/openwrt#17057 Signed-off-by: Hauke Mehrtens <[email protected]>
lede-project · Nov 24, 2024 · ed52345 · ed52345
1 parent a4bd42b
commit ed52345
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/target/linux/x86/config-6.6 b/target/linux/x86/config-6.6
@@ -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