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gerrit-public.fairphone.software / kernel / msm-4.9 / 7afcbbef6471130a1eb586fea0f5c06609b8341f / . / arch / mn10300 / Kconfig.debug
blob: 94efb3ed223f2552a8989ad1fe2eb1efe38011cf [file] [log] [blame]
David Howellsb920de12008-02-08 04:19:31 -0800[diff] [blame]1menu "Kernel hacking"
2
3source "lib/Kconfig.debug"
4
David Howellsb920de12008-02-08 04:19:31 -0800[diff] [blame]5config DEBUG_DECOMPRESS_KERNEL
6 bool "Using serial port during decompressing kernel"
7 depends on DEBUG_KERNEL
8 default n
9 help
10 If you say Y here you will confirm the start and the end of
11 decompressing Linux seeing "Uncompressing Linux... " and
12 "Ok, booting the kernel.\n" on console.
13
David Howells9f555882008-11-12 15:35:04 +0000[diff] [blame]14config TEST_MISALIGNMENT_HANDLER
15 bool "Run tests on the misalignment handler"
16 depends on DEBUG_KERNEL
17 default n
18 help
19 If you say Y here the kernel will execute a list of misaligned memory
20 accesses to make sure the misalignment handler deals them with
21 correctly. If it does not, the kernel will throw a BUG.
22
David Howellsb920de12008-02-08 04:19:31 -0800[diff] [blame]23config KPROBES
24 bool "Kprobes"
25 depends on DEBUG_KERNEL
26 help
27 Kprobes allows you to trap at almost any kernel address and
28 execute a callback function. register_kprobe() establishes
29 a probepoint and specifies the callback. Kprobes is useful
30 for kernel debugging, non-intrusive instrumentation and testing.
31 If in doubt, say "N".
32
33config GDBSTUB
34 bool "Remote GDB kernel debugging"
David Howells1a8d59e2011-03-18 16:54:32 +0000[diff] [blame]35 depends on DEBUG_KERNEL && DEPRECATED
David Howellsb920de12008-02-08 04:19:31 -0800[diff] [blame]36 select DEBUG_INFO
37 select FRAME_POINTER
38 help
39 If you say Y here, it will be possible to remotely debug the kernel
40 using gdb. This enlarges your kernel ELF image disk size by several
41 megabytes and requires a machine with more than 16 MB, better 32 MB
42 RAM to avoid excessive linking time. This is only useful for kernel
43 hackers. If unsure, say N.
44
David Howells1a8d59e2011-03-18 16:54:32 +0000[diff] [blame]45 This is deprecated in favour of KGDB and will be removed in a later
46 version.
47
David Howellsb920de12008-02-08 04:19:31 -0800[diff] [blame]48config GDBSTUB_IMMEDIATE
49 bool "Break into GDB stub immediately"
50 depends on GDBSTUB
51 help
52 If you say Y here, GDB stub will break into the program as soon as
53 possible, leaving the program counter at the beginning of
54 start_kernel() in init/main.c.
55
David Howells9ee21722011-03-18 16:54:29 +0000[diff] [blame]56config GDBSTUB_ALLOW_SINGLE_STEP
57 bool "Allow software single-stepping in GDB stub"
58 depends on GDBSTUB && !SMP && !PREEMPT
59 help
60 Allow GDB stub to perform software single-stepping through the
61 kernel. This doesn't work very well on SMP or preemptible kernels as
62 it uses temporary breakpoints to emulate single-stepping.
63
David Howellsb920de12008-02-08 04:19:31 -0800[diff] [blame]64config GDB_CONSOLE
65 bool "Console output to GDB"
66 depends on GDBSTUB
67 help
68 If you are using GDB for remote debugging over a serial port and
69 would like kernel messages to be formatted into GDB $O packets so
70 that GDB prints them as program output, say 'Y'.
71
72config GDBSTUB_DEBUGGING
73 bool "Debug GDB stub by messages to serial port"
74 depends on GDBSTUB
75 help
76 This causes debugging messages to be displayed at various points
77 during execution of the GDB stub routines. Such messages will be
78 displayed on ttyS0 if that isn't the GDB stub's port, or ttySM0
79 otherwise.
80
81config GDBSTUB_DEBUG_ENTRY
82 bool "Debug GDB stub entry"
83 depends on GDBSTUB_DEBUGGING
84 help
85 This option causes information to be displayed about entry to or exit
86 from the main GDB stub routine.
87
88config GDBSTUB_DEBUG_PROTOCOL
89 bool "Debug GDB stub protocol"
90 depends on GDBSTUB_DEBUGGING
91 help
92 This option causes information to be displayed about the GDB remote
93 protocol messages generated exchanged with GDB.
94
95config GDBSTUB_DEBUG_IO
96 bool "Debug GDB stub I/O"
97 depends on GDBSTUB_DEBUGGING
98 help
99 This option causes information to be displayed about GDB stub's
100 low-level I/O.
101
102config GDBSTUB_DEBUG_BREAKPOINT
103 bool "Debug GDB stub breakpoint management"
104 depends on GDBSTUB_DEBUGGING
105 help
106 This option causes information to be displayed about GDB stub's
107 breakpoint management.
108
109choice
110 prompt "GDB stub port"
David Howells95929ef2010-09-27 13:12:33 +0100[diff] [blame]111 default GDBSTUB_ON_TTYSM0
David Howellsb920de12008-02-08 04:19:31 -0800[diff] [blame]112 depends on GDBSTUB
113 help
114 Select the serial port used for GDB-stub.
115
116config GDBSTUB_ON_TTYSM0
117 bool "/dev/ttySM0 [SIF0]"
118 depends on MN10300_TTYSM0
119 select GDBSTUB_ON_TTYSMx
120
121config GDBSTUB_ON_TTYSM1
122 bool "/dev/ttySM1 [SIF1]"
123 depends on MN10300_TTYSM1
124 select GDBSTUB_ON_TTYSMx
125
126config GDBSTUB_ON_TTYSM2
127 bool "/dev/ttySM2 [SIF2]"
128 depends on MN10300_TTYSM2
129 select GDBSTUB_ON_TTYSMx
130
131config GDBSTUB_ON_TTYS0
132 bool "/dev/ttyS0"
133 select GDBSTUB_ON_TTYSx
134
135config GDBSTUB_ON_TTYS1
136 bool "/dev/ttyS1"
137 select GDBSTUB_ON_TTYSx
138
139endchoice
140
141config GDBSTUB_ON_TTYSMx
142 bool
143 depends on GDBSTUB_ON_TTYSM0 || GDBSTUB_ON_TTYSM1 || GDBSTUB_ON_TTYSM2
144 default y
145
146config GDBSTUB_ON_TTYSx
147 bool
148 depends on GDBSTUB_ON_TTYS0 || GDBSTUB_ON_TTYS1
149 default y
150
151endmenu
David Howells792576b2011-03-18 16:54:30 +0000[diff] [blame]152
153config KERNEL_DEBUGGER
154 def_bool y
David Howellse460d642011-03-18 16:54:31 +0000[diff] [blame]155 depends on GDBSTUB || KGDB