linux-kernel - Re: [PATCH -tip] v5 RCU: the bloatwatch edition

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Message-ID: <20090623163939.GE26674@linux-sh.org>
Date:	Wed, 24 Jun 2009 01:39:40 +0900
From:	Paul Mundt <lethal@...ux-sh.org>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc:	linux-kernel@...r.kernel.org, mingo@...e.hu,
	akpm@...ux-foundation.org, niv@...ibm.com, dvhltc@...ibm.com,
	dhowells@...hat.com, kernel@...tstofly.org, matthew@....cx
Subject: Re: [PATCH -tip] v5 RCU: the bloatwatch edition

On Tue, Jun 23, 2009 at 09:12:17AM -0700, Paul E. McKenney wrote:
> This patch is a -tip version of RCU designed for (!SMP && EMBEDDED)
> provided as a proof of concept of a small-footprint RCU implementation.
> In particular, the implementation of synchronize_rcu() is extremely
> lightweight and high performance.  It passes rcutorture testing in each
> of the four relevant configurations (combinations of NO_HZ and PREEMPT)
> on x86.  This saves 1263 bytes compared to Classic RCU, and more than
> three kilobytes compared to Hierarchical RCU (updated to 2.6.30):
> 
[snip]

> Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
> Acked-by: David Howells <dhowells@...hat.com>

Acked-by: Paul Mundt <lethal@...ux-sh.org>
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