From: Wim Van Sebroeck <wim@iguana.be>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Andrew Morton <akpm@osdl.org>,
Kumar Gala <galak@gate.crashing.org>,
linux-kernel@vger.kernel.org, linuxppc-embedded@ozlabs.org
Subject: Re: [PATCH] powerpc: remove useless spinlock from mpc83xx watchdog
Date: Fri, 20 Jan 2006 12:55:43 +0100 [thread overview]
Message-ID: <20060120115543.GA6174@infomag.infomag.iguana.be> (raw)
In-Reply-To: <1137708739.8471.69.camel@localhost.localdomain>
All,
> 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
I'll have a look at it from a global point of view.
Greetings,
Wim.
prev parent reply other threads:[~2006-01-20 11:56 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
2006-01-20 11:55 ` Wim Van Sebroeck [this message]
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