From: Paul Mackerras <paulus@samba.org>
To: Andrew Morton <akpm@osdl.org>
Cc: Andi Kleen <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: Sun, 5 Mar 2006 10:13:56 +1100 [thread overview]
Message-ID: <17418.7988.409791.419494@cargo.ozlabs.ibm.com> (raw)
In-Reply-To: <20060304034050.40f29251.akpm@osdl.org>
Andrew Morton writes:
> Andi Kleen <ak@muc.de> wrote:
> > Yes maybe it would be better to just use #define there.
> > jiffies_64 always was a bit too clever.
>
> hm. It's actually rather hard.
I think the thing that makes most sense is:
#define jiffies ((unsigned long) jiffies_64)
and fix the few drivers that use `jiffies' as a local variable.
No-one should be trying to write to jiffies, and the compiler will do
the right thing for reads of jiffies on 32-bit platforms (it does on
ppc32 at least).
Paul.
next prev parent reply other threads:[~2006-03-04 23:14 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-02 14:02 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 [this message]
2006-03-06 2:32 ` Atsushi Nemoto
2006-03-04 11:42 ` Paul Mackerras
2006-03-04 11:44 ` Andrew Morton
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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