From: Grant Grundler <grundler@parisc-linux.org>
To: Kyle McMartin <kyle@mcmartin.ca>
Cc: parisc-linux@lists.parisc-linux.org
Subject: Re: [parisc-linux] memory barriers, spinlocks, debuglocks, oh my
Date: Sun, 29 Aug 2004 22:06:35 -0600 [thread overview]
Message-ID: <20040830040635.GA18211@colo.lackof.org> (raw)
In-Reply-To: <20040829161318.GU2414@mcmartin.ca>
On Sun, Aug 29, 2004 at 12:13:18PM -0400, Kyle McMartin wrote:
> On Sun, Aug 29, 2004 at 04:11:10PM +0000, Joel Soete wrote:
> > Sorry, but here I am confused: for parisc-linux unlock means (x)->lock = 1?
> >
> Yes, because the only atomic instruction we have is load and clear.
I think you missed Joel's point.
Where does SPIN_UNLOCK set the register that it stores to 1?
grant
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next prev parent reply other threads:[~2004-08-30 4:06 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-27 16:37 [parisc-linux] memory barriers, spinlocks, debuglocks, oh my Kyle McMartin
[not found] ` <1093625820.2010.26.camel@mulgrave>
[not found] ` <20040827170342.GD25975@baldric.uwo.ca>
2004-08-28 16:57 ` Joel Soete
2004-08-28 17:07 ` Kyle McMartin
2004-08-28 22:15 ` Kyle McMartin
2004-08-29 16:11 ` Joel Soete
2004-08-29 16:13 ` Kyle McMartin
2004-08-30 4:06 ` Grant Grundler [this message]
2004-08-30 4:14 ` Kyle McMartin
2004-08-30 4:30 ` Grant Grundler
2004-08-30 4:37 ` Kyle McMartin
2004-08-29 16:14 ` Thibaut VARENE
2004-08-29 17:45 ` John David Anglin
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