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 PID_IN_CONTEXTIDR 24 bool "Write the current PID to the CONTEXTIDR register" 25 help 26 Enabling this option causes the kernel to write the current PID to 27 the CONTEXTIDR register, at the expense of some additional 28 instructions during context switch. Say Y here only if you are 29 planning to use hardware trace tools with this kernel. 30 31endmenu 32