From: David Miller <davem@davemloft.net>
To: dada1@cosmosbay.com
Cc: herbert@gondor.apana.org.au, netdev@vger.kernel.org
Subject: Re: [PATCH] NET : convert IP route cache garbage colleciton from softirq processing to a workqueue
Date: Wed, 12 Sep 2007 04:12:00 -0700 (PDT) [thread overview]
Message-ID: <20070912.041200.15253216.davem@davemloft.net> (raw)
In-Reply-To: <20070912120845.1b2d77dc.dada1@cosmosbay.com>
From: Eric Dumazet <dada1@cosmosbay.com>
Date: Wed, 12 Sep 2007 12:08:45 +0200
> Unfortunatly, there is no equivalent for this one.
> This gives on my Opterons a nice "prefetchnta"
>
> prefetch(addr) is more like __builtin_prefetch(addr, 0, 3)
>
> I would like to avoid to zap L2 cache with useless data.
>
> __builtin_prefetch() is included from gcc 3.1 (2002), so every
> platform should support it, as linux-2.6 requires gcc 3.2 at least.
>
> I guess you are going to tell me to first publish a patch to lkml :)
Basically, yes :-) You won't be the only person to find this
useful.
next prev parent reply other threads:[~2007-09-12 11:12 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-11 12:56 [PATCH] NET : convert IP route cache garbage colleciton from softirq processing to a workqueue Eric Dumazet
2007-09-12 9:05 ` David Miller
2007-09-12 10:08 ` Eric Dumazet
2007-09-12 11:12 ` David Miller [this message]
2007-09-12 12:16 ` Eric Dumazet
2007-09-12 12:30 ` David Miller
2007-09-12 10:00 ` Christoph Hellwig
2007-09-12 10:18 ` Eric Dumazet
2007-09-12 11:10 ` David Miller
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