| # SPDX-License-Identifier: GPL-2.0 |
| menu "Kernel hacking" |
| |
| source "lib/Kconfig.debug" |
| |
| config GPROF |
| bool "Enable gprof support" |
| depends on DEBUG_INFO && FRAME_POINTER |
| help |
| This allows profiling of a User-Mode Linux kernel with the gprof |
| utility. |
| |
| See <http://user-mode-linux.sourceforge.net/old/gprof.html> for more |
| details. |
| |
| If you're involved in UML kernel development and want to use gprof, |
| say Y. If you're unsure, say N. |
| |
| config GCOV |
| bool "Enable gcov support" |
| depends on DEBUG_INFO |
| depends on !KCOV |
| help |
| This option allows developers to retrieve coverage data from a UML |
| session. |
| |
| See <http://user-mode-linux.sourceforge.net/old/gprof.html> for more |
| details. |
| |
| If you're involved in UML kernel development and want to use gcov, |
| say Y. If you're unsure, say N. |
| |
| config EARLY_PRINTK |
| bool "Early printk" |
| default y |
| ---help--- |
| Write kernel log output directly to stdout. |
| |
| This is useful for kernel debugging when your machine crashes very |
| early before the console code is initialized. |
| |
| endmenu |