git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| 867e359b CM |
1 | menu "Kernel hacking" |
| 2 | ||
| 3 | source "lib/Kconfig.debug" | |
| 4 | ||
| 5 | config EARLY_PRINTK | |
| 6 | bool "Early printk" if EMBEDDED && DEBUG_KERNEL | |
| 7 | default y | |
| 8 | help | |
| 9 | Write kernel log output directly via the hypervisor console. | |
| 10 | ||
| 11 | This is useful for kernel debugging when your machine crashes very | |
| 12 | early before the console code is initialized. For normal operation | |
| 13 | it is not recommended because it looks ugly and doesn't cooperate | |
| 14 | with klogd/syslogd. You should normally N here, | |
| 15 | unless you want to debug such a crash. | |
| 16 | ||
| 17 | config DEBUG_STACKOVERFLOW | |
| 18 | bool "Check for stack overflows" | |
| 19 | depends on DEBUG_KERNEL | |
| 20 | help | |
| 21 | This option will cause messages to be printed if free stack space | |
| 22 | drops below a certain limit. | |
| 23 | ||
| 24 | config DEBUG_STACK_USAGE | |
| 25 | bool "Stack utilization instrumentation" | |
| 26 | depends on DEBUG_KERNEL | |
| 27 | help | |
| 28 | Enables the display of the minimum amount of free stack which each | |
| 29 | task has ever had available in the sysrq-T and sysrq-P debug output. | |
| 30 | ||
| 31 | This option will slow down process creation somewhat. | |
| 32 | ||
| 33 | config DEBUG_EXTRA_FLAGS | |
| 34 | string "Additional compiler arguments when building with '-g'" | |
| 35 | depends on DEBUG_INFO | |
| 36 | default "" | |
| 37 | help | |
| 38 | Debug info can be large, and flags like | |
| 39 | `-femit-struct-debug-baseonly' can reduce the kernel file | |
| 40 | size and build time noticeably. Such flags are often | |
| 41 | helpful if the main use of debug info is line number info. | |
| 42 | ||
| 43 | endmenu |