1 # SPDX-License-Identifier: GPL-2.0 !! 1 menu "Kernel hacking"
2 2
3 config GPROF !! 3 source "lib/Kconfig.debug"
4 bool "Enable gprof support" !! 4
5 depends on DEBUG_INFO && FRAME_POINTER !! 5 config BOOTPARAM
>> 6 bool 'Compiled-in Kernel Boot Parameter'
>> 7
>> 8 config BOOTPARAM_STRING
>> 9 string 'Kernel Boot Parameter'
>> 10 default 'console=ttyS0,19200'
>> 11 depends on BOOTPARAM
>> 12
>> 13 config EARLY_PRINTK
>> 14 bool "Early printk"
>> 15 depends on !(SUN3 || M68000 || COLDFIRE)
6 help 16 help
7 This allows profiling of a User-Mode !! 17 Write kernel log output directly to a serial port.
8 utility. !! 18 Where implemented, output goes to the framebuffer as well.
>> 19 PROM console functionality on Sun 3x is not affected by this option.
>> 20
>> 21 Pass "earlyprintk" on the kernel command line to get a
>> 22 boot console.
9 23
10 See <http://user-mode-linux.sourcefo !! 24 This is useful for kernel debugging when your machine crashes very
11 details. !! 25 early, i.e. before the normal console driver is loaded.
>> 26 You should normally say N here, unless you want to debug such a crash.
12 27
13 If you're involved in UML kernel dev !! 28 if !MMU
14 say Y. If you're unsure, say N. <<
15 29
16 config GCOV !! 30 config FULLDEBUG
17 bool "Enable gcov support" !! 31 bool "Full Symbolic/Source Debugging support"
18 depends on DEBUG_INFO <<
19 depends on !KCOV <<
20 depends on !MODULES <<
21 help 32 help
22 This option allows developers to ret !! 33 Enable debugging symbols on kernel build.
23 session. <<
24 34
25 See <http://user-mode-linux.sourcefo !! 35 config HIGHPROFILE
26 details. !! 36 bool "Use fast second timer for profiling"
>> 37 depends on COLDFIRE
>> 38 help
>> 39 Use a fast secondary clock to produce profiling information.
27 40
28 If you're involved in UML kernel dev !! 41 config NO_KERNEL_MSG
29 say Y. If you're unsure, say N. !! 42 bool "Suppress Kernel BUG Messages"
>> 43 help
>> 44 Do not output any debug BUG messages within the kernel.
30 45
31 config EARLY_PRINTK !! 46 config BDM_DISABLE
32 bool "Early printk" !! 47 bool "Disable BDM signals"
33 default y !! 48 depends on COLDFIRE
34 help 49 help
35 Write kernel log output directly to !! 50 Disable the ColdFire CPU's BDM signals.
>> 51
>> 52 endif
36 53
37 This is useful for kernel debugging !! 54 endmenu
38 early before the console code is ini <<
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