FM / cpu

/sys/devices/system/cpu

Name	Size	Mode	Actions
cpu0/	-	0755	rm
cpu1/	-	0755	rm
cpu2/	-	0755	rm
cpu3/	-	0755	rm
kernel_max	4096	0444	edit dl rm
offline	4096	0444	edit dl rm
online	4096	0444	edit dl rm
possible	4096	0444	edit dl rm
present	4096	0444	edit dl rm

Edit: /sys/devices/system/cpu/kernel_max (4096B)

cmd: