diff options
Diffstat (limited to 'lib/Kconfig.debug')
| -rw-r--r-- | lib/Kconfig.debug | 27 |
1 files changed, 23 insertions, 4 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 299f7f3b5b0..016e89a44ac 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -46,6 +46,25 @@ config LOG_BUF_SHIFT 13 => 8 KB 12 => 4 KB +config DETECT_SOFTLOCKUP + bool "Detect Soft Lockups" + depends on DEBUG_KERNEL + default y + help + Say Y here to enable the kernel to detect "soft lockups", + which are bugs that cause the kernel to loop in kernel + mode for more than 10 seconds, without giving other tasks a + chance to run. + + When a soft-lockup is detected, the kernel will print the + current stack trace (which you should report), but the + system will stay locked up. This feature has negligible + overhead. + + (Note that "hard lockups" are separate type of bugs that + can be detected via the NMI-watchdog, on platforms that + support it.) + config SCHEDSTATS bool "Collect scheduler statistics" depends on DEBUG_KERNEL && PROC_FS @@ -151,11 +170,11 @@ config DEBUG_FS config FRAME_POINTER bool "Compile the kernel with frame pointers" - depends on DEBUG_KERNEL && ((X86 && !X86_64) || CRIS || M68K || M68KNOMMU || FRV || UML) + depends on DEBUG_KERNEL && (X86 || CRIS || M68K || M68KNOMMU || FRV || UML) default y if DEBUG_INFO && UML help If you say Y here the resulting kernel image will be slightly larger - and slower, but it will give very useful debugging information. - If you don't debug the kernel, you can say N, but we may not be able - to solve problems without frame pointers. + and slower, but it might give very useful debugging information + on some architectures or you use external debuggers. + If you don't debug the kernel, you can say N. |