mirror of
https://github.com/torvalds/linux.git
synced 2024-11-08 13:11:45 +00:00
d159e571cb
Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
48 lines
1.5 KiB
Plaintext
48 lines
1.5 KiB
Plaintext
menu "Kernel hacking"
|
|
|
|
source "lib/Kconfig.debug"
|
|
|
|
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
|
|
def_bool DEBUG_OCD
|
|
help
|
|
Write kernel log output directly into the ocd or to a serial port.
|
|
|
|
This is useful for kernel debugging when your machine crashes very
|
|
early before the console code is initialized. For normal operation
|
|
it is not recommended because it looks ugly and doesn't cooperate
|
|
with klogd/syslogd or the X server. You should normally N here,
|
|
unless you want to debug such a crash.
|
|
|
|
# These options are only for real kernel hackers who want to get their hands dirty.
|
|
config DEBUG_LL
|
|
bool "Kernel low-level debugging functions"
|
|
depends on DEBUG_KERNEL
|
|
help
|
|
Say Y here to include definitions of printascii, printch, printhex
|
|
in the kernel. This is helpful if you are debugging code that
|
|
executes before the console is initialized.
|
|
|
|
config DEBUG_OCD
|
|
bool "Kernel low-level debugging via On-Chip-Debugger"
|
|
depends on DEBUG_LL
|
|
default y
|
|
help
|
|
Say Y here if you want the debug print routines to direct their
|
|
output to the UniCore On-Chip-Debugger channel using CP #1.
|
|
|
|
endmenu
|