configs: Enable HOTPLUG_CPU

This works and can be useful for debugging/benchmarking/low power use $ nproc 4 $ echo 0 | sudo tee /sys/devices/system/cpu/cpu3/online 0 $ echo 0 | sudo tee /sys/devices/system/cpu/cpu2/online 0 $ echo 0 | sudo tee /sys/devices/system/cpu/cpu1/online 0 $ nproc 1 Signed-off-by: Dom Cobley <[email protected]>
raspberrypi · Oct 14, 2024 · 120e4f2 · 120e4f2
1 parent 0985b32
commit 120e4f2
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diff --git a/arch/arm64/configs/bcm2711_defconfig b/arch/arm64/configs/bcm2711_defconfig
@@ -41,6 +41,7 @@ CONFIG_ARCH_BRCMSTB=y
 # CONFIG_CAVIUM_ERRATUM_22375 is not set
 # CONFIG_CAVIUM_ERRATUM_23154 is not set
 # CONFIG_CAVIUM_ERRATUM_27456 is not set
+CONFIG_HOTPLUG_CPU=y
 CONFIG_COMPAT=y
 CONFIG_ARMV8_DEPRECATED=y
 CONFIG_SWP_EMULATION=y

diff --git a/arch/arm64/configs/bcm2712_defconfig b/arch/arm64/configs/bcm2712_defconfig
@@ -42,6 +42,7 @@ CONFIG_ARCH_BRCMSTB=y
 # CONFIG_CAVIUM_ERRATUM_23154 is not set
 # CONFIG_CAVIUM_ERRATUM_27456 is not set
 CONFIG_ARM64_16K_PAGES=y
+CONFIG_HOTPLUG_CPU=y
 CONFIG_COMPAT=y
 CONFIG_ARMV8_DEPRECATED=y
 CONFIG_SWP_EMULATION=y