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gerrit-public.fairphone.software / kernel / msm / c4c74d912405c76979f47940b4a35208a34ac080 / . / arch / mn10300 / Kconfig.debug
blob: bdbfd444a9ff9cf5569baa685a906e5f8800801d [file] [log] [blame]
David Howellsb920de12008-02-08 04:19:31 -0800[diff] [blame]1menu "Kernel hacking"
2
3source "lib/Kconfig.debug"
4
5config DEBUG_STACKOVERFLOW
6 bool "Check for stack overflows"
7 depends on DEBUG_KERNEL
8
9config DEBUG_DECOMPRESS_KERNEL
10 bool "Using serial port during decompressing kernel"
11 depends on DEBUG_KERNEL
12 default n
13 help
14 If you say Y here you will confirm the start and the end of
15 decompressing Linux seeing "Uncompressing Linux... " and
16 "Ok, booting the kernel.\n" on console.
17
David Howells9f555882008-11-12 15:35:04 +0000[diff] [blame]18config TEST_MISALIGNMENT_HANDLER
19 bool "Run tests on the misalignment handler"
20 depends on DEBUG_KERNEL
21 default n
22 help
23 If you say Y here the kernel will execute a list of misaligned memory
24 accesses to make sure the misalignment handler deals them with
25 correctly. If it does not, the kernel will throw a BUG.
26
David Howellsb920de12008-02-08 04:19:31 -0800[diff] [blame]27config KPROBES
28 bool "Kprobes"
29 depends on DEBUG_KERNEL
30 help
31 Kprobes allows you to trap at almost any kernel address and
32 execute a callback function. register_kprobe() establishes
33 a probepoint and specifies the callback. Kprobes is useful
34 for kernel debugging, non-intrusive instrumentation and testing.
35 If in doubt, say "N".
36
37config GDBSTUB
38 bool "Remote GDB kernel debugging"
David Howells1a8d59e2011-03-18 16:54:32 +0000[diff] [blame]39 depends on DEBUG_KERNEL && DEPRECATED
David Howellsb920de12008-02-08 04:19:31 -0800[diff] [blame]40 select DEBUG_INFO
41 select FRAME_POINTER
42 help
43 If you say Y here, it will be possible to remotely debug the kernel
44 using gdb. This enlarges your kernel ELF image disk size by several
45 megabytes and requires a machine with more than 16 MB, better 32 MB
46 RAM to avoid excessive linking time. This is only useful for kernel
47 hackers. If unsure, say N.
48
David Howells1a8d59e2011-03-18 16:54:32 +0000[diff] [blame]49 This is deprecated in favour of KGDB and will be removed in a later
50 version.
51
David Howellsb920de12008-02-08 04:19:31 -0800[diff] [blame]52config GDBSTUB_IMMEDIATE
53 bool "Break into GDB stub immediately"
54 depends on GDBSTUB
55 help
56 If you say Y here, GDB stub will break into the program as soon as
57 possible, leaving the program counter at the beginning of
58 start_kernel() in init/main.c.
59
David Howells9ee21722011-03-18 16:54:29 +0000[diff] [blame]60config GDBSTUB_ALLOW_SINGLE_STEP
61 bool "Allow software single-stepping in GDB stub"
62 depends on GDBSTUB && !SMP && !PREEMPT
63 help
64 Allow GDB stub to perform software single-stepping through the
65 kernel. This doesn't work very well on SMP or preemptible kernels as
66 it uses temporary breakpoints to emulate single-stepping.
67
David Howellsb920de12008-02-08 04:19:31 -0800[diff] [blame]68config GDB_CONSOLE
69 bool "Console output to GDB"
70 depends on GDBSTUB
71 help
72 If you are using GDB for remote debugging over a serial port and
73 would like kernel messages to be formatted into GDB $O packets so
74 that GDB prints them as program output, say 'Y'.
75
76config GDBSTUB_DEBUGGING
77 bool "Debug GDB stub by messages to serial port"
78 depends on GDBSTUB
79 help
80 This causes debugging messages to be displayed at various points
81 during execution of the GDB stub routines. Such messages will be
82 displayed on ttyS0 if that isn't the GDB stub's port, or ttySM0
83 otherwise.
84
85config GDBSTUB_DEBUG_ENTRY
86 bool "Debug GDB stub entry"
87 depends on GDBSTUB_DEBUGGING
88 help
89 This option causes information to be displayed about entry to or exit
90 from the main GDB stub routine.
91
92config GDBSTUB_DEBUG_PROTOCOL
93 bool "Debug GDB stub protocol"
94 depends on GDBSTUB_DEBUGGING
95 help
96 This option causes information to be displayed about the GDB remote
97 protocol messages generated exchanged with GDB.
98
99config GDBSTUB_DEBUG_IO
100 bool "Debug GDB stub I/O"
101 depends on GDBSTUB_DEBUGGING
102 help
103 This option causes information to be displayed about GDB stub's
104 low-level I/O.
105
106config GDBSTUB_DEBUG_BREAKPOINT
107 bool "Debug GDB stub breakpoint management"
108 depends on GDBSTUB_DEBUGGING
109 help
110 This option causes information to be displayed about GDB stub's
111 breakpoint management.
112
113choice
114 prompt "GDB stub port"
David Howells95929ef2010-09-27 13:12:33 +0100[diff] [blame]115 default GDBSTUB_ON_TTYSM0
David Howellsb920de12008-02-08 04:19:31 -0800[diff] [blame]116 depends on GDBSTUB
117 help
118 Select the serial port used for GDB-stub.
119
120config GDBSTUB_ON_TTYSM0
121 bool "/dev/ttySM0 [SIF0]"
122 depends on MN10300_TTYSM0
123 select GDBSTUB_ON_TTYSMx
124
125config GDBSTUB_ON_TTYSM1
126 bool "/dev/ttySM1 [SIF1]"
127 depends on MN10300_TTYSM1
128 select GDBSTUB_ON_TTYSMx
129
130config GDBSTUB_ON_TTYSM2
131 bool "/dev/ttySM2 [SIF2]"
132 depends on MN10300_TTYSM2
133 select GDBSTUB_ON_TTYSMx
134
135config GDBSTUB_ON_TTYS0
136 bool "/dev/ttyS0"
137 select GDBSTUB_ON_TTYSx
138
139config GDBSTUB_ON_TTYS1
140 bool "/dev/ttyS1"
141 select GDBSTUB_ON_TTYSx
142
143endchoice
144
145config GDBSTUB_ON_TTYSMx
146 bool
147 depends on GDBSTUB_ON_TTYSM0 || GDBSTUB_ON_TTYSM1 || GDBSTUB_ON_TTYSM2
148 default y
149
150config GDBSTUB_ON_TTYSx
151 bool
152 depends on GDBSTUB_ON_TTYS0 || GDBSTUB_ON_TTYS1
153 default y
154
155endmenu
David Howells792576b2011-03-18 16:54:30 +0000[diff] [blame]156
157config KERNEL_DEBUGGER
158 def_bool y
David Howellse460d642011-03-18 16:54:31 +0000[diff] [blame]159 depends on GDBSTUB || KGDB