On Fri, May 11, 2012 at 01:32:34PM -0700, Andrew Morton wrote: > Sure, thanks, that might turn something up. > Documentation/SubmitChecklist recommends > > : 12: Has been tested with CONFIG_PREEMPT, CONFIG_DEBUG_PREEMPT, > : CONFIG_DEBUG_SLAB, CONFIG_DEBUG_PAGEALLOC, CONFIG_DEBUG_MUTEXES, > : CONFIG_DEBUG_SPINLOCK, CONFIG_DEBUG_ATOMIC_SLEEP, CONFIG_PROVE_RCU > : and CONFIG_DEBUG_OBJECTS_RCU_HEAD all simultaneously enabled. > > although that list might be a bit out of date; it certainly should > include CONFIG_DEBUG_VM! I wonder if there's somewhere a recommended list of generally most useful debug options that only have a moderate performance impact? I'd be happy to use a set of useful debug flags that generally impacts performance by, say, <10%, on the computers I use for my everyday work to help catch bugs. But it's sometimes quite hard to assess the impact of different Kernel hacking options from just the description... Sami
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