3 source "lib/Kconfig.debug"
6 bool "Filter access to /dev/mem"
9 If this option is disabled, you allow userspace (root) access to all
10 of memory, including kernel and userspace memory. Accidental
11 access to this is obviously disastrous, but specific access can
12 be used by people debugging the kernel.
14 If this option is switched on, the /dev/mem file only allows
15 userspace access to memory mapped peripherals.
22 Write kernel log output directly into the ocd or to a serial port.
24 This is useful for kernel debugging when your machine crashes very
25 early before the console code is initialized. For normal operation
26 it is not recommended because it looks ugly and doesn't cooperate
27 with klogd/syslogd or the X server. You should normally N here,
28 unless you want to debug such a crash.
30 config DEBUG_STACK_USAGE
31 bool "Enable stack utilization instrumentation"
32 depends on DEBUG_KERNEL
34 Enables the display of the minimum amount of free stack which each
35 task has ever had available in the sysrq-T output.
37 # These options are only for real kernel hackers who want to get their hands dirty.
39 bool "Kernel low-level debugging functions"
40 depends on DEBUG_KERNEL
42 Say Y here to include definitions of printascii, printch, printhex
43 in the kernel. This is helpful if you are debugging code that
44 executes before the console is initialized.
47 bool "Kernel low-level debugging via On-Chip-Debugger"
51 Say Y here if you want the debug print routines to direct their
52 output to the UniCore On-Chip-Debugger channel using CP #1.
54 config DEBUG_OCD_BREAKPOINT
55 bool "Breakpoint support via On-Chip-Debugger"
59 int "Kernel low-level debugging messages via serial port"
64 Choice for UART for kernel low-level using PKUnity UARTS,
65 should be between zero and one. The port must have been
66 initialised by the boot-loader before use.