From: Andi Kleen <ak@muc.de>
To: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>,
lkml - Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] Introduce load_TLS to the "for" loop.
Date: 13 Mar 2007 21:55:26 +0100
Date: Tue, 13 Mar 2007 21:55:26 +0100 [thread overview]
Message-ID: <20070313205526.GA46469@muc.de> (raw)
In-Reply-To: <45F6DFEF.2090008@goop.org>
On Tue, Mar 13, 2007 at 10:31:27AM -0700, Jeremy Fitzhardinge wrote:
> Andi Kleen wrote:
> > On Tue, Mar 13, 2007 at 05:39:36PM +1100, Rusty Russell wrote:
> >
> >> GCC (4.1 at least) unrolls it anyway, but I can't believe this code
> >>
> >
> > Are you sure? Normally it doesn't unroll without -funroll-loops which
> > the kernel does normally not set. Especially not with -Os builds.
> >
>
> Does it matter either way in this case?
It's in the middle of the context switch.
-Andi
next prev parent reply other threads:[~2007-03-13 20:55 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-13 6:39 [PATCH] Introduce load_TLS to the "for" loop Rusty Russell
2007-03-13 13:50 ` Andi Kleen
2007-03-13 17:31 ` Jeremy Fitzhardinge
2007-03-13 20:55 ` Andi Kleen [this message]
2007-03-14 6:43 ` Rusty Russell
2007-03-14 6:31 ` Rusty Russell
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