| menu "Kernel hacking" |
| |
| source "lib/Kconfig.debug" |
| |
| config FRAME_POINTER |
| bool |
| default y |
| |
| config STRICT_DEVMEM |
| bool "Filter access to /dev/mem" |
| depends on MMU |
| help |
| If this option is disabled, you allow userspace (root) access to all |
| of memory, including kernel and userspace memory. Accidental |
| access to this is obviously disastrous, but specific access can |
| be used by people debugging the kernel. |
| |
| If this option is switched on, the /dev/mem file only allows |
| userspace access to memory mapped peripherals. |
| |
| If in doubt, say Y. |
| |
| config PID_IN_CONTEXTIDR |
| bool "Write the current PID to the CONTEXTIDR register" |
| help |
| Enabling this option causes the kernel to write the current PID to |
| the CONTEXTIDR register, at the expense of some additional |
| instructions during context switch. Say Y here only if you are |
| planning to use hardware trace tools with this kernel. |
| |
| endmenu |
