Re: Lock dependency based tree report in perf lock

[Peter Zijlstra]

On Mon, 2010-02-01 at 02:23 +0100, Frederic Weisbecker wrote:
> On Sat, Jan 30, 2010 at 09:46:28AM +0100, Peter Zijlstra wrote:
> > On Sat, 2010-01-30 at 00:17 +0100, Frederic Weisbecker wrote:
> > > 
> > > 
> > > Anyway, that's just an idea, not trivial I must admit.
> > 
> > lockdep actually collects all this information, so writing it out isn't
> > too hard.
> 
> 
> Hmm, I'm discovering the /proc/lock_stat file this evening, did not
> know it exist :)
> 
> Still, a tree representation can bring another dimension.

current->held_locks[i]->instance, i < current->lock_depth

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