From: Jan Engelhardt <jengelh@xxxxxxxxxx> Date: Thu, 3 Feb 2011 16:19:56 +0100 (CET) > I remember there being a kernel config option > (CONFIG_DEBUG_STACKOVERFLOW) that would emit messages > similar to > "process foobar (12345) used greatest stack depth: 2042" -- > would that also work for softirqs? The kernel stack tracer is your best bet right now, it's easy to enable, it's something like just writing "1" to the /sys filesystem file that controls it. Enable CONFIG_STACK_TRACER in your config. config STACK_TRACER bool "Trace max stack" depends on HAVE_FUNCTION_TRACER select FUNCTION_TRACER select STACKTRACE select KALLSYMS help This special tracer records the maximum stack footprint of the kernel and displays it in /sys/kernel/debug/tracing/stack_trace. This tracer works by hooking into every function call that the kernel executes, and keeping a maximum stack depth value and stack-trace saved. If this is configured with DYNAMIC_FTRACE then it will not have any overhead while the stack tracer is disabled. To enable the stack tracer on bootup, pass in 'stacktrace' on the kernel command line. The stack tracer can also be enabled or disabled via the sysctl kernel.stack_tracer_enabled Say N if unsure. -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
