From: Andrew Morton <akpm@zip.com.au>
To: kees <kees@schoen.nl>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] solves freeze due to serial comm. on SMP
Date: Wed, 02 Jan 2002 21:46:06 -0800 [thread overview]
Message-ID: <3C33F01E.EC95DD82@zip.com.au> (raw)
In-Reply-To: <Pine.LNX.4.33.0201022257001.12316-200000@schoen3.schoen.nl>
kees wrote:
>
> Hi,
>
> In the beginning of last year I reported a solid freeze problem with Linux
> when I moved from UP to SMP. Some bughunting especially with kdb an hints
> from AM I was able to nail it down to some SMP unsafe irq table handling
> in serial.c.
> I submitted the attached patch to Ted but that never made it to the
> kernel. It _really_ solved the problem as I had a crash sometimes within
> 15 minutes and after applying it I reached uptimes over 100 days.
>
It looks like somebody has already had a go at fixing this in current
kernels - the restore_flags() has been moved to the end of
shutdown(). (It's not a complete fix, because request_irq() can
schedule).
Are you able to test 2.4.17?
next prev parent reply other threads:[~2002-01-03 5:50 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-01-02 22:02 [PATCH] solves freeze due to serial comm. on SMP kees
2002-01-03 5:46 ` Andrew Morton [this message]
2002-01-04 7:53 ` kees
2002-01-04 14:11 ` kees
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