Hi, everybody: What information should be written to /sys/devices/system/cpu/probe to add a cpu In X86? And, what information should be written to /sys/devices/system/cpu/release to remove a cpu In X86? I have read the /Documentation/ABI/testing/sysfs-devices-system-cpu. It says that probe:writes to this file will dynamically add a CPU to the system. Information written to the file to add CPU's is architeture specific. release: writes to this file will dynamically remove a CPU to the system. Information written to the file to remove CPU's is architeture specific. I just want to know what information should be written to those file. Any help will be appreciated! -- Sincerely, Ren Zhen