1menu "Kernel hacking" 2 3source "lib/Kconfig.debug" 4 5config FRAME_POINTER 6 bool 7 default y 8 9config STRICT_DEVMEM 10 bool "Filter access to /dev/mem" 11 depends on MMU 12 help 13 If this option is disabled, you allow userspace (root) access to all 14 of memory, including kernel and userspace memory. Accidental 15 access to this is obviously disastrous, but specific access can 16 be used by people debugging the kernel. 17 18 If this option is switched on, the /dev/mem file only allows 19 userspace access to memory mapped peripherals. 20 21 If in doubt, say Y. 22 23config EARLY_PRINTK 24 bool "Early printk support" 25 default y 26 help 27 Say Y here if you want to have an early console using the 28 earlyprintk=<name>[,<addr>][,<options>] kernel parameter. It 29 is assumed that the early console device has been initialised 30 by the boot loader prior to starting the Linux kernel. 31 32config PID_IN_CONTEXTIDR 33 bool "Write the current PID to the CONTEXTIDR register" 34 help 35 Enabling this option causes the kernel to write the current PID to 36 the CONTEXTIDR register, at the expense of some additional 37 instructions during context switch. Say Y here only if you are 38 planning to use hardware trace tools with this kernel. 39 40endmenu 41