From: Ingo Molnar <mingo@elte.hu>
To: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: Thomas Gleixner <tglx@linutronix.de>,
akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Subject: Re: [patch 0/4] DEBUG_RCU_HEAD: Debug and fix racy call_rcu() users
Date: Mon, 12 Oct 2009 20:37:25 +0200 [thread overview]
Message-ID: <20091012183725.GI17138@elte.hu> (raw)
In-Reply-To: <20091012183007.GA12445@Krystal>
* Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> wrote:
> * Ingo Molnar (mingo@elte.hu) wrote:
> >
> > * Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> wrote:
> >
> > > Here is a patchset, done on 2.6.30.9, which permits to detect and fix
> > > racy call_rcu() users.
> >
> > Nice idea - but any reason why this isnt using the debugojects
> > framework? That debugging framework is upstream already and allows this
> > kind of object lifetime debugging - in a much broader way.
> >
>
> Other than: it did not occur to me, no, there is no reason for not using
> debugobjects there. :-)
>
> As long as we can tag the object as
> - initialized
> - active
> - inactive
>
> And dump a nice fat warning when the object is activated twice, that
> should suffice. Now time is a bit short on my side, but I'll keep in
> mind to respin a version on top of debugobjects soon.
ok, thanks.
Commit to check would be:
237fc6e: add hrtimer specific debugobjects code
c6f3a97: debugobjects: add timer specific object debugging code
Ingo
next prev parent reply other threads:[~2009-10-12 18:38 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-06 14:37 [patch 0/4] DEBUG_RCU_HEAD: Debug and fix racy call_rcu() users Mathieu Desnoyers
2009-10-06 14:37 ` [patch 1/4] kernel call_rcu usage: initialize rcu_head structures Mathieu Desnoyers
2009-10-06 15:19 ` [patch 1/4] kernel call_rcu usage: initialize rcu_head structures (v2) Mathieu Desnoyers
2009-10-06 14:37 ` [patch 2/4] tree rcu: Add debug RCU head option Mathieu Desnoyers
2009-10-06 15:54 ` Eric Dumazet
2009-10-06 16:09 ` Mathieu Desnoyers
2009-10-06 16:17 ` Eric Dumazet
2009-10-06 16:35 ` Mathieu Desnoyers
2009-10-06 14:37 ` [patch 3/4] markers call_rcu usage: initialize rcu_head structures Mathieu Desnoyers
2009-10-06 14:37 ` [patch 4/4] vunmap: Fix racy use of rcu_head Mathieu Desnoyers
2009-10-06 14:37 ` Mathieu Desnoyers
2009-10-06 15:23 ` Mathieu Desnoyers
2009-10-06 15:23 ` Mathieu Desnoyers
2009-10-06 16:43 ` Christoph Lameter
2009-10-06 16:43 ` Christoph Lameter
2009-10-06 17:33 ` Mathieu Desnoyers
2009-10-06 17:33 ` Mathieu Desnoyers
2009-10-07 4:20 ` [patch 0/4] DEBUG_RCU_HEAD: Debug and fix racy call_rcu() users Paul E. McKenney
2009-10-07 12:36 ` Mathieu Desnoyers
2009-10-12 18:07 ` Ingo Molnar
2009-10-12 18:30 ` Mathieu Desnoyers
2009-10-12 18:37 ` Ingo Molnar [this message]
2009-10-12 18:56 ` Thomas Gleixner
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