X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2FKconfig.debug;h=3754c9a8f5c8e1e3fccebf2d0f282fd5eda6bcb4;hb=00b61f51922e432fd92a482ba1e0b5f8f326ef46;hp=0c421295e613f3436ddb29cf62c4823e48817762;hpb=aef7b83c92dd0b7e994805440655d1d64147287b;p=linux-2.6 diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 0c421295e6..3754c9a8f5 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 @@ -141,7 +160,7 @@ config DEBUG_IOREMAP config DEBUG_FS bool "Debug Filesystem" - depends on DEBUG_KERNEL + depends on DEBUG_KERNEL && SYSFS help debugfs is a virtual file system that kernel developers use to put debugging files into. Enable this option to be able to read and