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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 EARLY_PRINTK
bool "Early printk support"
default y
help
Say Y here if you want to have an early console using the
earlyprintk=<name>[,<addr>][,<options>] kernel parameter. It
is assumed that the early console device has been initialised
by the boot loader prior to starting the Linux kernel.
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
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