From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Matt Mackall <mpm@selenic.com>,
Pekka Enberg <penberg@cs.helsinki.fi>,
linux-mm@kvack.org, cl@linux-foundation.org,
LKML <linux-kernel@vger.kernel.org>,
Nick Piggin <npiggin@suse.de>
Subject: Re: lockdep complaints in slab allocator
Date: Tue, 24 Nov 2009 10:54:59 -0800 [thread overview]
Message-ID: <20091124185459.GH6831@linux.vnet.ibm.com> (raw)
In-Reply-To: <1259087511.4531.1775.camel@laptop>
On Tue, Nov 24, 2009 at 07:31:51PM +0100, Peter Zijlstra wrote:
> On Tue, 2009-11-24 at 10:25 -0800, Paul E. McKenney wrote:
>
> > Well, I suppose I could make my scripts randomly choose the memory
> > allocator, but I would rather not. ;-)
>
> Which is why I hope we'll soon be down to 2, SLOB for tiny systems and
> SLQB for the rest of us, having 3 in-tree and 1 pending is pure and
> simple insanity.
So I should start specifying SLOB for my TINY_RCU tests, then.
> Preferably SLQB will be small enough to also be able to get rid of SLOB,
> but I've not recently seen any data on that particular issue.
Given the existence of TINY_RCU, I would look pretty funny if I insisted
on but a single implementation of core subsystems. ;-)
Thanx, Paul
WARNING: multiple messages have this Message-ID (diff)
From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Matt Mackall <mpm@selenic.com>,
Pekka Enberg <penberg@cs.helsinki.fi>,
linux-mm@kvack.org, cl@linux-foundation.org,
LKML <linux-kernel@vger.kernel.org>,
Nick Piggin <npiggin@suse.de>
Subject: Re: lockdep complaints in slab allocator
Date: Tue, 24 Nov 2009 10:54:59 -0800 [thread overview]
Message-ID: <20091124185459.GH6831@linux.vnet.ibm.com> (raw)
In-Reply-To: <1259087511.4531.1775.camel@laptop>
On Tue, Nov 24, 2009 at 07:31:51PM +0100, Peter Zijlstra wrote:
> On Tue, 2009-11-24 at 10:25 -0800, Paul E. McKenney wrote:
>
> > Well, I suppose I could make my scripts randomly choose the memory
> > allocator, but I would rather not. ;-)
>
> Which is why I hope we'll soon be down to 2, SLOB for tiny systems and
> SLQB for the rest of us, having 3 in-tree and 1 pending is pure and
> simple insanity.
So I should start specifying SLOB for my TINY_RCU tests, then.
> Preferably SLQB will be small enough to also be able to get rid of SLOB,
> but I've not recently seen any data on that particular issue.
Given the existence of TINY_RCU, I would look pretty funny if I insisted
on but a single implementation of core subsystems. ;-)
Thanx, Paul
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next prev parent reply other threads:[~2009-11-24 18:54 UTC|newest]
Thread overview: 121+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-18 18:12 lockdep complaints in slab allocator Paul E. McKenney
2009-11-20 6:49 ` Pekka Enberg
2009-11-20 6:49 ` Pekka Enberg
2009-11-20 9:25 ` Peter Zijlstra
2009-11-20 9:25 ` Peter Zijlstra
2009-11-20 10:38 ` Pekka Enberg
2009-11-20 10:38 ` Pekka Enberg
2009-11-20 10:52 ` Peter Zijlstra
2009-11-20 10:52 ` Peter Zijlstra
2009-11-20 11:05 ` Pekka Enberg
2009-11-20 11:05 ` Pekka Enberg
2009-11-20 14:48 ` Paul E. McKenney
2009-11-20 14:48 ` Paul E. McKenney
2009-11-20 15:17 ` Peter Zijlstra
2009-11-20 15:17 ` Peter Zijlstra
2009-11-20 16:25 ` Paul E. McKenney
2009-11-20 16:25 ` Paul E. McKenney
2009-11-20 15:09 ` Peter Zijlstra
2009-11-20 15:09 ` Peter Zijlstra
2009-11-23 19:00 ` Pekka Enberg
2009-11-23 19:00 ` Pekka Enberg
2009-11-23 19:10 ` Matt Mackall
2009-11-23 19:10 ` Matt Mackall
2009-11-23 19:13 ` Pekka Enberg
2009-11-23 19:13 ` Pekka Enberg
2009-11-24 16:33 ` Peter Zijlstra
2009-11-24 16:33 ` Peter Zijlstra
2009-11-24 17:00 ` Paul E. McKenney
2009-11-24 17:00 ` Paul E. McKenney
2009-11-24 17:12 ` Matt Mackall
2009-11-24 17:12 ` Matt Mackall
2009-11-24 17:58 ` Paul E. McKenney
2009-11-24 17:58 ` Paul E. McKenney
2009-11-24 18:14 ` Peter Zijlstra
2009-11-24 18:14 ` Peter Zijlstra
2009-11-24 18:25 ` Paul E. McKenney
2009-11-24 18:25 ` Paul E. McKenney
2009-11-24 18:31 ` Peter Zijlstra
2009-11-24 18:31 ` Peter Zijlstra
2009-11-24 18:53 ` Christoph Lameter
2009-11-24 18:53 ` Christoph Lameter
2009-11-24 18:54 ` Paul E. McKenney [this message]
2009-11-24 18:54 ` Paul E. McKenney
2009-11-24 19:23 ` Matt Mackall
2009-11-24 19:23 ` Matt Mackall
2009-11-24 19:50 ` Paul E. McKenney
2009-11-24 19:50 ` Paul E. McKenney
2009-11-24 20:46 ` Peter Zijlstra
2009-11-24 20:46 ` Peter Zijlstra
2009-11-24 20:53 ` Matt Mackall
2009-11-24 20:53 ` Matt Mackall
2009-11-24 21:01 ` Peter Zijlstra
2009-11-24 21:01 ` Peter Zijlstra
2009-11-24 21:03 ` David Rientjes
2009-11-24 21:03 ` David Rientjes
2009-11-24 21:12 ` Peter Zijlstra
2009-11-24 21:12 ` Peter Zijlstra
2009-11-24 21:19 ` Pekka Enberg
2009-11-24 21:19 ` Pekka Enberg
2009-11-24 21:22 ` David Rientjes
2009-11-24 21:22 ` David Rientjes
2009-11-24 21:35 ` Peter Zijlstra
2009-11-24 21:35 ` Peter Zijlstra
2009-11-24 21:46 ` David Rientjes
2009-11-24 21:46 ` David Rientjes
2009-11-24 22:23 ` Paul E. McKenney
2009-11-24 22:23 ` Paul E. McKenney
2009-11-25 7:12 ` Pekka Enberg
2009-11-25 7:12 ` Pekka Enberg
2009-11-25 7:25 ` Pekka Enberg
2009-11-25 7:25 ` Pekka Enberg
2009-11-27 17:22 ` Christoph Lameter
2009-11-27 17:22 ` Christoph Lameter
2009-11-24 21:48 ` Paul E. McKenney
2009-11-24 21:48 ` Paul E. McKenney
2009-11-24 21:16 ` Pekka Enberg
2009-11-24 21:16 ` Pekka Enberg
2009-11-24 21:07 ` Pekka Enberg
2009-11-24 21:07 ` Pekka Enberg
2009-11-24 22:55 ` Matt Mackall
2009-11-24 22:55 ` Matt Mackall
2009-11-25 21:59 ` David Rientjes
2009-11-25 21:59 ` David Rientjes
2009-11-25 23:06 ` Matt Mackall
2009-11-25 23:06 ` Matt Mackall
2009-11-27 17:28 ` Christoph Lameter
2009-11-27 17:28 ` Christoph Lameter
2009-11-30 23:14 ` David Rientjes
2009-11-30 23:14 ` David Rientjes
2009-12-01 0:21 ` Matt Mackall
2009-12-01 0:21 ` Matt Mackall
2009-12-01 22:41 ` David Rientjes
2009-12-01 22:41 ` David Rientjes
2009-12-01 16:47 ` Christoph Lameter
2009-12-01 16:47 ` Christoph Lameter
2009-11-27 17:26 ` Christoph Lameter
2009-11-27 17:26 ` Christoph Lameter
2009-11-23 19:30 ` Christoph Lameter
2009-11-23 19:30 ` Christoph Lameter
2009-11-23 19:43 ` Paul E. McKenney
2009-11-23 19:43 ` Paul E. McKenney
2009-11-23 19:50 ` Pekka Enberg
2009-11-23 19:50 ` Pekka Enberg
2009-11-23 20:01 ` Pekka Enberg
2009-11-23 20:01 ` Pekka Enberg
2009-11-23 20:57 ` Paul E. McKenney
2009-11-23 20:57 ` Paul E. McKenney
2009-11-23 21:01 ` Matt Mackall
2009-11-23 21:01 ` Matt Mackall
2009-11-24 16:23 ` Paul E. McKenney
2009-11-24 16:23 ` Paul E. McKenney
2009-11-24 20:59 ` Pekka Enberg
2009-11-24 20:59 ` Pekka Enberg
2009-11-24 21:26 ` Peter Zijlstra
2009-11-24 21:26 ` Peter Zijlstra
2009-11-25 10:42 ` Pekka Enberg
2009-11-25 10:42 ` Pekka Enberg
2009-11-24 21:47 ` Paul E. McKenney
2009-11-24 21:47 ` Paul E. McKenney
2009-11-30 16:18 ` Paul E. McKenney
2009-11-30 16:18 ` Paul E. McKenney
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