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Date: Sun, 05 Jun 2011 18:35:40 +0200 From: Arne Jansen <lists@...-jansens.de> To: Ingo Molnar <mingo@...e.hu> CC: Peter Zijlstra <peterz@...radead.org>, Linus Torvalds <torvalds@...ux-foundation.org>, mingo@...hat.com, hpa@...or.com, linux-kernel@...r.kernel.org, efault@....de, npiggin@...nel.dk, akpm@...ux-foundation.org, frank.rowand@...sony.com, tglx@...utronix.de, linux-tip-commits@...r.kernel.org Subject: Re: [debug patch] printk: Add a printk killswitch to robustify NMI watchdog messages On 05.06.2011 18:07, Arne Jansen wrote: > On 05.06.2011 17:32, Ingo Molnar wrote: >> >> one more thing, could you please add this call: >> >> debug_show_all_locks(); >> >> to after the WARN(), in watchdog.c? >> >> Please surround the whole printout portion by the >> spin_lock()/unlock() protection code i suggested, full-lock-state >> printouts are slow and other CPUs might start printing their NMI >> ticks ... >> >> With the all-locks-printed output we can double check what locks are >> held. > > Hm, on first try: > > INFO: lockdep is turned off. > > Recompiling... > same after a full recompile. # grep LOCKDEP .config CONFIG_LOCKDEP_SUPPORT=y CONFIG_LOCKDEP=y # CONFIG_DEBUG_LOCKDEP is not set -Arne >> >> Thanks, >> >> Ingo >> -- >> To unsubscribe from this list: send the line "unsubscribe >> linux-kernel" in >> the body of a message to majordomo@...r.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> Please read the FAQ at http://www.tux.org/lkml/ > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@...r.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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