From: Robert Love <rml@tech9.net>
To: Paul Mackerras <paulus@samba.org>
Cc: Patrick Mochel <mochel@osdl.org>, Greg KH <greg@kroah.com>,
Andrew Morton <akpm@digeo.com>,
sdake@mvista.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] udev enhancements to use kernel event queue
Date: 12 Jun 2003 16:50:16 -0700 [thread overview]
Message-ID: <1055461816.662.350.camel@localhost> (raw)
In-Reply-To: <16105.3943.510055.309447@nanango.paulus.ozlabs.org>
On Thu, 2003-06-12 at 16:40, Paul Mackerras wrote:
> BZZZT. If another CPU is also doing atomic_inc_and_read you could end
> up with both calls returning the same value.
That is what I thought. Damn.
> You can't do atomic_inc_and_read on 386. You can on cpus that have
> cmpxchg (e.g. later x86). You can also on machines with load-locked
> and store-conditional instructions (alpha, ppc, probably most other
> RISCs).
So this is doable on everything but old i386 chips... hrm.
Robert Love
next prev parent reply other threads:[~2003-06-12 23:34 UTC|newest]
Thread overview: 73+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-06-12 19:10 [PATCH] udev enhancements to use kernel event queue Steven Dake
2003-06-12 21:47 ` Patrick Mochel
2003-06-13 16:31 ` Steven Dake
2003-06-13 17:06 ` Patrick Mochel
2003-06-12 21:47 ` Greg KH
2003-06-12 22:03 ` Andrew Morton
2003-06-12 22:50 ` Greg KH
2003-06-12 22:51 ` Andrew Morton
2003-06-12 23:02 ` Greg KH
2003-06-12 23:09 ` Greg KH
2003-06-12 23:14 ` Patrick Mochel
2003-06-12 23:16 ` Robert Love
2003-06-12 23:25 ` Greg KH
2003-06-13 20:01 ` Oliver Neukum
2003-06-18 22:59 ` Greg KH
2003-06-19 0:12 ` Kevin P. Fleming
2003-06-19 0:20 ` Greg KH
2003-06-19 0:42 ` Kevin P. Fleming
2003-06-19 0:51 ` Greg KH
2003-06-19 0:25 ` Andrew Morton
2003-06-19 6:27 ` Oliver Neukum
2003-06-12 23:25 ` Patrick Mochel
2003-06-12 23:29 ` Robert Love
2003-06-12 23:32 ` Greg KH
2003-06-12 23:34 ` Patrick Mochel
2003-06-12 23:40 ` Paul Mackerras
2003-06-12 23:50 ` Robert Love [this message]
2003-06-13 12:44 ` Richard B. Johnson
2003-06-13 12:54 ` Olivier Galibert
2003-06-12 23:52 ` Patrick Mochel
2003-06-13 8:41 ` Alan Cox
2003-06-13 11:00 ` Paul Mackerras
2003-06-13 11:07 ` Herbert Xu
2003-06-13 13:31 ` Alan Cox
2003-06-13 19:57 ` Joe Korty
2003-06-13 21:10 ` Alan Cox
2003-06-13 11:17 ` David Schwartz
2003-06-13 15:44 ` Davide Libenzi
2003-06-12 23:42 ` Robert Love
2003-06-12 23:45 ` Davide Libenzi
2003-06-12 23:05 ` Robert Love
2003-06-19 19:51 ` Werner Almesberger
2003-06-26 12:17 ` Tommi Virtanen
2003-06-26 14:35 ` Werner Almesberger
2003-06-13 8:40 ` Alan Cox
2003-06-13 9:14 ` Olivier Galibert
2003-06-19 20:53 ` Werner Almesberger
2003-06-13 16:05 ` Steven Dake
2003-06-13 16:32 ` Greg KH
2003-06-13 15:51 ` Steven Dake
2003-06-13 16:41 ` Patrick Mochel
2003-06-13 16:42 ` Greg KH
2003-06-13 17:17 ` Chris Friesen
2003-06-12 22:27 ` Oliver Neukum
2003-06-13 16:03 ` Steven Dake
2003-06-13 16:50 ` Patrick Mochel
2003-06-13 17:10 ` Steven Dake
2003-06-13 18:26 ` Greg KH
2003-06-13 19:02 ` Patrick Mansfield
2003-06-13 17:32 ` Oliver Neukum
2003-06-13 18:23 ` Greg KH
2003-06-13 18:24 ` Greg KH
2003-06-13 7:17 ` Christoph Hellwig
2003-06-13 18:06 ` Linus Torvalds
2003-06-19 23:32 ` Werner Almesberger
2003-06-19 23:42 ` Steven Dake
2003-06-20 0:05 ` Linus Torvalds
2003-06-20 0:10 ` Steven Dake
2003-06-20 0:43 ` Linus Torvalds
2003-06-20 2:26 ` Werner Almesberger
2003-06-20 17:03 ` Steven Dake
2003-06-20 17:18 ` Patrick Mochel
2003-06-14 6:36 John Bradford
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