Re: [RFC/PATCH] debug workqueue deadlocks with lockdep

From: Ingo Molnar
Date: Sat Jun 30 2007 - 04:06:46 EST


On Thu, 2007-06-28 at 19:33 +0200, Johannes Berg wrote:
> No, that's not right either, but Arjan just helped me a bit with how
> lockdep works and I think I have the right idea now. Ignore this for
> now, I'll send a new patch in a few days.

ok. But in general, this is a very nice idea!

i've Cc:-ed Oleg. Oleg, what do you think? I think we should keep all
the workqueue APIs specified in a form that makes them lockdep coverable
like Johannes did. This debug mechanism could have helped with the
recent DVB lockup that Thomas Sattler reported.

Ingo

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