This is purely to save memory - each supported CPU requires
memory in the static kernel configuration.
+config PHYSICAL_ALIGN
+ hex
+ default "0x200000"
+
config HOTPLUG_CPU
- bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
+ bool "Support for suspend on SMP and hot-pluggable CPUs (EXPERIMENTAL)"
depends on SMP && HOTPLUG && EXPERIMENTAL
help
Say Y here to experiment with turning CPUs off and on. CPUs
can be controlled through /sys/devices/system/cpu/cpu#.
- Say N if you want to disable CPU hotplug.
+ This is also required for suspend/hibernation on SMP systems.
+
+ Say N if you want to disable CPU hotplug and don't need to
+ suspend.
config ARCH_ENABLE_MEMORY_HOTPLUG
def_bool y
source "arch/x86_64/oprofile/Kconfig"
config KPROBES
- bool "Kprobes (EXPERIMENTAL)"
- depends on KALLSYMS && EXPERIMENTAL && MODULES
+ bool "Kprobes"
+ depends on KALLSYMS && MODULES
help
Kprobes allows you to trap at almost any kernel address and
execute a callback function. register_kprobe() establishes