From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Marcelo Tosatti <marcelo.tosatti@cyclades.com>
Cc: Andrew Morton <akpm@osdl.org>,
Kumar Gala <galak@gate.crashing.org>,
wim@iguana.be, linux-kernel@vger.kernel.org,
linuxppc-embedded@ozlabs.org
Subject: Re: [PATCH] powerpc: remove useless spinlock from mpc83xx watchdog
Date: Thu, 19 Jan 2006 22:12:19 +0000 [thread overview]
Message-ID: <1137708739.8471.69.camel@localhost.localdomain> (raw)
In-Reply-To: <20060119164811.GB4418@dmt.cnet>
On Iau, 2006-01-19 at 14:48 -0200, Marcelo Tosatti wrote:
> On Thu, Jan 19, 2006 at 09:49:16AM +0000, Alan Cox wrote:
> >
> > f = open("/dev/watchdog", O_RDWR);
> > fork();
> > while(1) {
> > write(f, "Boing", 5);
> > }
>
> Oops.
>
> At least 50% of the watchdog drivers rely solely on the "wdt_is_open"
> atomic variable and are broken with respect to synchronization.
What an excellent janitors project
next prev parent reply other threads:[~2006-01-19 22:13 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-19 6:58 [PATCH] powerpc: remove useless spinlock from mpc83xx watchdog Kumar Gala
2006-01-19 9:49 ` Alan Cox
2006-01-19 14:21 ` Kumar Gala
2006-01-19 16:48 ` Marcelo Tosatti
2006-01-19 22:12 ` Alan Cox [this message]
2006-01-20 11:55 ` Wim Van Sebroeck
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