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From: Rusty Russell <rusty@rustcorp.com.au>
To: torvalds@transmeta.com (Linus Torvalds)
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Futexes IV (Fast Lightweight Userspace Semaphores)
Date: Wed, 13 Mar 2002 18:40:28 +1100	[thread overview]
Message-ID: <20020313184028.7fdb8541.rusty@rustcorp.com.au> (raw)
In-Reply-To: <a6gctg$eb6$1@penguin.transmeta.com>
In-Reply-To: <a6bjgl$a0j$1@cesium.transmeta.com> <E16jVSZ-0008FH-00@the-village.bc.nu> <a6gctg$eb6$1@penguin.transmeta.com>

On Sun, 10 Mar 2002 19:41:36 +0000 (UTC)
torvalds@transmeta.com (Linus Torvalds) wrote:

> And no, it's not worth discontinuing i386 support.  It just isn't
> painful enough to maintain. 

How about just dropping 386 + SMP support?

Then it would be a nobrainer to have cmpxchg a generic operation, AND
export it to userspace in the proposed "kernel routine page".

diff -urN -I \$.*\$ --exclude TAGS -X /home/rusty/devel/kernel/kernel-patches/current-dontdiff --minimal linux-2.5.6/arch/i386/config.in working-2.5.6-futex-6/arch/i386/config.in
--- linux-2.5.6/arch/i386/config.in	Wed Feb 20 17:56:59 2002
+++ working-2.5.6-futex-6/arch/i386/config.in	Sat Mar  9 15:17:18 2002
@@ -177,7 +177,9 @@
 
 bool 'Math emulation' CONFIG_MATH_EMULATION
 bool 'MTRR (Memory Type Range Register) support' CONFIG_MTRR
-bool 'Symmetric multi-processing support' CONFIG_SMP
+if [ "$CONFIG_M386" != "y" ]; then
+	bool 'Symmetric multi-processing support' CONFIG_SMP
+fi
 bool 'Preemptible Kernel' CONFIG_PREEMPT
 if [ "$CONFIG_SMP" != "y" ]; then
    bool 'Local APIC support on uniprocessors' CONFIG_X86_UP_APIC

Thanks!
Rusty.
-- 
  Anyone who quotes me in their sig is an idiot. -- Rusty Russell.

  parent reply	other threads:[~2002-03-13  7:37 UTC|newest]

Thread overview: 95+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-03-05  7:01 [PATCH] Futexes IV (Fast Lightweight Userspace Semaphores) Rusty Russell
2002-03-05 21:23 ` Futexes III : performance numbers Hubertus Franke
2002-03-06  2:08   ` Rusty Russell
2002-03-06 14:28     ` Hubertus Franke
2002-03-06 17:23       ` [Lse-tech] " george anzinger
2002-03-07  0:25     ` Hubertus Franke
2002-03-07  0:35     ` Hubertus Franke
2002-03-05 22:39 ` [PATCH] Futexes IV (Fast Lightweight Userspace Semaphores) Davide Libenzi
2002-03-05 23:16   ` Hubertus Franke
2002-03-05 23:26     ` Davide Libenzi
2002-03-05 23:37       ` Peter Svensson
2002-03-05 23:50         ` Davide Libenzi
2002-03-08  0:07       ` Richard Henderson
2002-03-06  1:46   ` Rusty Russell
2002-03-06  2:03     ` Davide Libenzi
2002-03-06  7:54 ` Futexes III : performance numbers Rusty Russell
2002-03-06 14:46   ` Hubertus Franke
2002-03-06 16:13   ` Hubertus Franke
2002-03-06 20:36     ` Futexes V : Hubertus Franke
2002-03-07  4:21     ` Rusty Russell
2002-03-08 18:07 ` [PATCH] Futexes IV (Fast Lightweight Userspace Semaphores) Linus Torvalds
2002-03-08 19:03   ` Hubertus Franke
2002-03-08 19:22     ` Linus Torvalds
2002-03-08 20:29       ` Hubertus Franke
2002-03-08 20:48         ` Matthew Kirkwood
2002-03-08 21:02         ` Linus Torvalds
2002-03-08 23:15           ` Hubertus Franke
2002-03-08 23:36             ` Alan Cox
2002-03-08 23:41             ` Linus Torvalds
2002-03-08 23:56               ` Hubertus Franke
2002-03-09  2:12                 ` Linus Torvalds
2002-03-11 14:14                   ` Hubertus Franke
2002-03-09  0:03               ` H. Peter Anvin
2002-03-09  1:15                 ` Alan Cox
2002-03-10 19:41                   ` Linus Torvalds
2002-03-11 20:49                     ` Pavel Machek
2002-03-10 19:58                   ` Martin J. Bligh
2002-03-10 20:40                     ` Alan Cox
2002-03-10 20:28                       ` Martin J. Bligh
2002-03-10 21:05                         ` Alan Cox
2002-03-13  7:40                   ` Rusty Russell [this message]
2002-03-13 16:37                     ` Alan Cox
2002-03-12  9:35                 ` Helge Hafting
2002-03-08 20:40       ` Alan Cox
2002-03-08 20:57         ` Linus Torvalds
2002-03-08 23:43           ` H. Peter Anvin
2002-03-08 22:55         ` Hubertus Franke
2002-03-08 23:38           ` Alan Cox
2002-03-08 23:44           ` H. Peter Anvin
2002-03-08 20:47       ` george anzinger
2002-03-08 23:02         ` Hubertus Franke
2002-03-08 23:47           ` george anzinger
2002-03-09  1:11             ` Alan Cox
2002-03-09  1:20             ` Linus Torvalds
2002-03-09  4:49     ` Rusty Russell
2002-03-11 22:45       ` Linus Torvalds
2002-03-11 23:12         ` Hubertus Franke
2002-03-12  7:20         ` Rusty Russell
2002-03-12 14:56           ` Hubertus Franke
2002-03-13  4:02             ` Rusty Russell
2002-03-12 17:17           ` Linus Torvalds
2002-03-13  2:57             ` Rusty Russell
2002-03-09  4:51 ` Rusty Russell
2002-03-13  9:12 Martin Wirth
2002-03-13 19:41 ` Bill Davidsen
2002-03-13 19:52   ` Dave McCracken
2002-03-13 22:17     ` Bill Davidsen
2002-03-13 20:06   ` Alan Cox
2002-03-15  7:31 ` Rusty Russell
2002-03-15  8:41   ` Martin Wirth
2002-03-15 15:29     ` Hubertus Franke
2002-03-15 16:23     ` Peter Wächtler
2002-03-16  0:12       ` Rusty Russell
2002-03-16 11:23         ` Martin Wirth
2002-03-18  0:52           ` Ulrich Drepper
2002-03-19  3:28             ` Rusty Russell
2002-03-19  4:05               ` Ulrich Drepper
2002-03-20  6:20                 ` Rusty Russell
2002-03-20 10:42                   ` Peter Wächtler
2002-03-20 17:20                     ` Ulrich Drepper
2002-03-19  8:34               ` Martin Wirth
2002-03-20  6:45                 ` Rusty Russell
2002-03-21  6:48                   ` Martin Wirth
2002-03-24 18:25                     ` Peter Wächtler
2002-03-25  2:28                       ` Rusty Russell
2002-03-25  4:46                         ` Rusty Russell
2002-03-25 11:56                           ` Peter Wächtler
2002-03-26  1:02                             ` Rusty Russell
2002-03-26  8:17                               ` Martin Wirth
2002-03-26 23:10                                 ` Rusty Russell
2002-03-27 21:05                                   ` Hubertus Franke
2002-03-27 23:53                                     ` Rusty Russell
2002-03-25  9:47                         ` Peter Wächtler
2002-03-16 19:48         ` Peter Wächtler
2002-03-17  6:50         ` Rusty Russell

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