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Message-ID: <20110605153218.GA31471@elte.hu>
Date: Sun, 5 Jun 2011 17:32:18 +0200
From: Ingo Molnar <mingo@...e.hu>
To: Arne Jansen <lists@...-jansens.de>
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
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.
Thanks,
Ingo
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