From: Andrew Morton <akpm@osdl.org>
To: Paul Mackerras <paulus@samba.org>
Cc: ak@muc.de, anemo@mba.ocn.ne.jp, clameter@engr.sgi.com,
linux-kernel@vger.kernel.org, ralf@linux-mips.org,
johnstul@us.ibm.com, rth@twiddle.net
Subject: Re: [PATCH] simplify update_times (avoid jiffies/jiffies_64 aliasing problem)
Date: Sat, 4 Mar 2006 03:44:49 -0800 [thread overview]
Message-ID: <20060304034449.3fd5e2fa.akpm@osdl.org> (raw)
In-Reply-To: <17417.32015.6281.253814@cargo.ozlabs.ibm.com>
Paul Mackerras <paulus@samba.org> wrote:
>
> Andi Kleen writes:
>
> > Also I assume Atsushi-san did the patch because he saw a real problem?
>
> Yes, one which I also saw on PPC. The compiler (gcc-4) emits loads
> for jiffies, jiffies64 and wall_jiffies before storing the incremented
> jiffies64 value back.
>
What was the effect of that?
next prev parent reply other threads:[~2006-03-04 11:46 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-02 14:02 [PATCH] simplify update_times (avoid jiffies/jiffies_64 aliasing problem) Atsushi Nemoto
2006-03-02 15:51 ` Atsushi Nemoto
2006-03-02 19:09 ` Christoph Lameter
2006-03-03 2:44 ` Atsushi Nemoto
2006-03-03 3:04 ` Andrew Morton
2006-03-03 3:20 ` Andi Kleen
2006-03-03 4:31 ` Atsushi Nemoto
2006-03-03 5:45 ` David S. Miller
2006-03-03 16:26 ` Atsushi Nemoto
2006-03-03 16:31 ` Atsushi Nemoto
2006-03-04 8:18 ` Andrew Morton
2006-03-04 11:20 ` Andi Kleen
2006-03-04 11:40 ` Andrew Morton
2006-03-04 5:21 ` Andi Kleen
2006-03-04 23:13 ` Paul Mackerras
2006-03-06 2:32 ` Atsushi Nemoto
2006-03-04 11:42 ` Paul Mackerras
2006-03-04 11:44 ` Andrew Morton [this message]
2006-03-04 12:33 ` Paul Mackerras
2006-03-04 16:43 ` Atsushi Nemoto
2006-03-03 20:17 ` john stultz
2006-03-03 21:15 ` Andrew Morton
2006-03-04 17:15 ` Atsushi Nemoto
2006-07-30 14:54 ` Atsushi Nemoto
2006-07-31 10:36 ` Martin Schwidefsky
2006-08-01 14:44 ` Atsushi Nemoto
2006-08-02 12:50 ` Martin Schwidefsky
2006-08-03 15:53 ` Atsushi Nemoto
2006-08-04 14:02 ` Martin Schwidefsky
2006-08-06 16:13 ` Atsushi Nemoto
2006-08-07 11:28 ` Martin Schwidefsky
2006-08-07 19:58 ` Andrew Morton
2006-08-08 8:11 ` Martin Schwidefsky
2006-08-09 15:07 ` Atsushi Nemoto
2006-03-03 18:13 ` john stultz
2006-03-04 2:34 ` Ralf Baechle
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