From: Heiko Carstens <heiko.carstens@de.ibm.com>
To: Josef Sipek <jsipek@fsl.cs.sunysb.edu>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>,
linux-kernel@vger.kernel.org, akpm@osdl.org
Subject: Re: [patch 11/13] s390: instruction processing damage handling.
Date: Fri, 28 Apr 2006 10:39:03 +0200 [thread overview]
Message-ID: <20060428083903.GA11819@osiris.boeblingen.de.ibm.com> (raw)
In-Reply-To: <20060428073358.GA15166@filer.fsl.cs.sunysb.edu>
On Fri, Apr 28, 2006 at 04:33:58AM -0400, Josef Sipek wrote:
> On Mon, Apr 24, 2006 at 05:05:44PM +0200, Martin Schwidefsky wrote:
> > +++ linux-2.6-patched/drivers/s390/s390mach.c 2006-04-24 16:47:28.000000000 +0200
> ...
> > +#define MAX_IPD_TIME (5 * 60 * 100 * 1000) /* 5 minutes */
>
> I'm no s390 expert, but shouldn't the above use something like HZ?
Using HZ here feels just wrong to me. MAX_IPD_TIME has nothing to do with the
timer frequency. In this case it's used to tell if there were 30 machine
checks within the last 5 minutes (in a usec granularity). It's just by
accident that this could be expressed using HZ.
(5 * 60 * USEC_PER_SEC) would probably look better...
next prev parent reply other threads:[~2006-04-28 8:39 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-24 15:05 Martin Schwidefsky
2006-04-24 23:58 ` Andrew Morton
2006-04-25 20:14 ` Arnd Bergmann
2006-04-28 7:33 ` Josef Sipek
2006-04-28 8:39 ` Heiko Carstens [this message]
2006-04-28 9:24 ` Martin Schwidefsky
2006-04-28 13:43 ` Paulo Marques
2006-04-28 14:53 ` Martin Schwidefsky
2006-04-28 16:46 ` Heiko Carstens
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