From: Peter Zijlstra <peterz@infradead.org>
To: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>,
Ingo Molnar <mingo@elte.hu>, Paul Mackerras <paulus@samba.org>,
Arnaldo Carvalho de Melo <acme@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: Lock dependency based tree report in perf lock
Date: Mon, 01 Feb 2010 10:21:09 +0100 [thread overview]
Message-ID: <1265016069.24455.107.camel@laptop> (raw)
In-Reply-To: <20100201012331.GH5224@nowhere>
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
prev parent reply other threads:[~2010-02-01 9:21 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-29 23:17 Lock dependency based tree report in perf lock Frederic Weisbecker
2010-01-30 8:46 ` Peter Zijlstra
2010-01-30 18:57 ` Frederic Weisbecker
2010-02-01 8:25 ` Peter Zijlstra
2010-02-01 17:48 ` Frederic Weisbecker
2010-02-01 1:23 ` Frederic Weisbecker
2010-02-01 9:21 ` Peter Zijlstra [this message]
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