| menu "Kernel hacking" | |
| source "lib/Kconfig.debug" | |
| config EARLY_PRINTK | |
| bool "Early printk" if EXPERT && DEBUG_KERNEL | |
| default y | |
| help | |
| Write kernel log output directly via the hypervisor console. | |
| This is useful for kernel debugging when your machine crashes very | |
| early before the console code is initialized. For normal operation | |
| it is not recommended because it looks ugly and doesn't cooperate | |
| with klogd/syslogd. You should normally N here, | |
| unless you want to debug such a crash. | |
| config DEBUG_STACKOVERFLOW | |
| bool "Check for stack overflows" | |
| depends on DEBUG_KERNEL | |
| help | |
| This option will cause messages to be printed if free stack space | |
| drops below a certain limit. | |
| config DEBUG_STACK_USAGE | |
| bool "Stack utilization instrumentation" | |
| depends on DEBUG_KERNEL | |
| help | |
| Enables the display of the minimum amount of free stack which each | |
| task has ever had available in the sysrq-T and sysrq-P debug output. | |
| This option will slow down process creation somewhat. | |
| config DEBUG_EXTRA_FLAGS | |
| string "Additional compiler arguments when building with '-g'" | |
| depends on DEBUG_INFO | |
| default "" | |
| help | |
| Debug info can be large, and flags like | |
| `-femit-struct-debug-baseonly' can reduce the kernel file | |
| size and build time noticeably. Such flags are often | |
| helpful if the main use of debug info is line number info. | |
| endmenu |