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From: Pavel Machek <pavel@suse.cz>
To: Linus Torvalds <torvalds@osdl.org>, vojtech@suse.cz
Cc: James Bottomley <James.Bottomley@SteelEye.com>,
	Andrew Morton <akpm@osdl.org>, Paul Jackson <pj@sgi.com>,
	PARISC list <parisc-linux@lists.parisc-linux.org>,
	Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] Fix the cpumask rewrite
Date: Thu, 1 Jul 2004 15:11:59 +0200	[thread overview]
Message-ID: <20040701131158.GP698@openzaurus.ucw.cz> (raw)
In-Reply-To: <Pine.LNX.4.58.0406260948070.14449@ppc970.osdl.org>

Hi!

> And the same is true of "volatile" for the bitop functions. They are 
> volatile not because they require the data to be volatile, but because 
> they have at least traditionally been used for various cases, _including_ 
> volatile.
> 
> Now, we could say that we don't do that any more, and decide that the 
> regular bitop functions really cannot be used on volatile stuff. But 
> that's a BIG decision. And it's certainly not a decision that parisc 
> users should make.

Heh, with vojtech we introduced locking into input layer
(there was none before)... using test_bit/set_bit.

(I just hope set_bit etc implies memory barrier... or we'll have to do
it once more)

			Pavel
-- 
64 bytes from 195.113.31.123: icmp_seq=28 ttl=51 time=448769.1 ms         


  parent reply	other threads:[~2004-07-01 13:51 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-06-26 16:08 [PATCH] Fix the cpumask rewrite James Bottomley
2004-06-26 16:32 ` Linus Torvalds
2004-06-26 16:44   ` Linus Torvalds
2004-06-26 16:46   ` James Bottomley
2004-06-26 16:54     ` Linus Torvalds
2004-06-26 17:18       ` James Bottomley
2004-06-26 18:01         ` Linus Torvalds
2004-06-26 18:28           ` Vojtech Pavlik
2004-06-26 18:54             ` Linus Torvalds
2004-06-26 19:02               ` James Bottomley
2004-06-26 19:13                 ` Linus Torvalds
2004-06-26 19:13               ` Vojtech Pavlik
2004-06-26 18:59           ` James Bottomley
2004-06-26 19:11             ` Linus Torvalds
2004-06-26 19:33               ` James Bottomley
2004-06-28 23:16           ` Jonathan Lundell
2004-07-01 13:11       ` Pavel Machek [this message]
2004-07-01 14:07         ` [parisc-linux] " Alan Cox
2004-07-01 16:15           ` Linus Torvalds
2004-07-01 16:52             ` Jeff Garzik
2004-07-01 17:42               ` Linus Torvalds
2004-06-26 22:18   ` Chris Wedgwood
2004-06-26 22:48     ` Linus Torvalds
2004-06-26 22:54       ` [parisc-linux] " Alan Cox
2004-06-27  0:05         ` Chris Wedgwood
2004-06-27 12:00           ` Matthias Urlichs
2004-06-27 22:41             ` Chris Wedgwood
2004-06-28  1:24               ` Matthias Urlichs
2004-06-28  5:42                 ` Chris Wedgwood
2004-06-28  6:55                   ` Matthias Urlichs
2004-06-28  7:02                     ` Chris Wedgwood
2004-06-28  7:19                       ` Matthias Urlichs
2004-06-27 14:37           ` Alan Cox
2004-07-01 13:33             ` Pavel Machek
2004-07-01 17:43               ` Chris Wedgwood
2004-06-26 23:37       ` jiffies_64 Chris Wedgwood
2004-06-27  1:55       ` more (insane) jiffies ranting Chris Wedgwood
2004-06-27 17:39         ` Linus Torvalds
2004-06-27 17:39         ` [parisc-linux] " Linus Torvalds
2004-06-27 17:39         ` Linus Torvalds
2004-06-26 16:32 ` [PATCH] Fix the cpumask rewrite Linus Torvalds

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