On Fri, May 30, 2014 at 09:53:08AM +1000, Dave Chinner wrote: > That sounds like a plan. Perhaps it would be useful to add a > WARN_ON_ONCE(stack_usage > 8k) (or some other arbitrary depth beyond > 8k) so that we get some indication that we're hitting a deep stack > but the system otherwise keeps functioning. That gives us some > motivation to keep stack usage down but isn't a fatal problem like > it is now....
We have check_stack_usage() and DEBUG_STACK_USAGE for this. Though it needs some tweaking if we move to 16K I gave it a try yesterday, and noticed a spew of noisy warnings as soon as I gave it a workload to chew on. (Moreso than usual with 8K stacks) Dave -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/