From: Benjamin LaHaise <bcrl@redhat.com>
To: Rusty Russell <rusty@rustcorp.com.au>
Cc: Robert Love <rml@tech9.net>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: latest linus-2.5 BK broken
Date: Tue, 18 Jun 2002 15:29:49 -0400 [thread overview]
Message-ID: <20020618152949.B16091@redhat.com> (raw)
In-Reply-To: <E17KO4i-0002xn-00@wagner.rustcorp.com.au>; from rusty@rustcorp.com.au on Wed, Jun 19, 2002 at 04:51:31AM +1000
On Wed, Jun 19, 2002 at 04:51:31AM +1000, Rusty Russell wrote:
> You could do a loop here, but the real problem is the broken userspace
> interface. Can you fix this so it takes a single CPU number please?
>
> ie.
> /* -1 = remove affinity */
> sys_sched_setaffinity(pid_t pid, int cpu);
>
> This will work everywhere, and doesn't require userspace to know the
> size of the cpu bitmask etc.
That doesn't work. Think of SMT CPU pairs (aka HyperThreading) or
quads that share caches.
-ben
--
"You will be reincarnated as a toad; and you will be much happier."
next prev parent reply other threads:[~2002-06-18 19:29 UTC|newest]
Thread overview: 97+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-06-18 17:18 latest linus-2.5 BK broken James Simmons
2002-06-18 17:46 ` Robert Love
2002-06-18 18:51 ` Rusty Russell
2002-06-18 18:43 ` Zwane Mwaikambo
2002-06-18 18:56 ` Linus Torvalds
2002-06-18 18:59 ` Robert Love
2002-06-18 20:05 ` Rusty Russell
2002-06-18 20:05 ` Linus Torvalds
2002-06-18 20:31 ` Rusty Russell
2002-06-18 20:41 ` Linus Torvalds
2002-06-18 21:12 ` Benjamin LaHaise
2002-06-18 21:08 ` Cort Dougan
2002-06-18 21:47 ` Linus Torvalds
2002-06-19 12:29 ` Eric W. Biederman
2002-06-19 17:27 ` Linus Torvalds
2002-06-20 3:57 ` Eric W. Biederman
2002-06-20 5:24 ` Larry McVoy
2002-06-20 7:26 ` Andreas Dilger
2002-06-20 14:54 ` Eric W. Biederman
2002-06-20 15:41 ` McVoy's Clusters (was Re: latest linus-2.5 BK broken) Sandy Harris
2002-06-20 17:10 ` William Lee Irwin III
2002-06-20 20:42 ` Timothy D. Witham
2002-06-21 5:16 ` Eric W. Biederman
2002-06-22 14:14 ` Kai Henningsen
2002-06-20 16:30 ` latest linus-2.5 BK broken Cort Dougan
2002-06-20 17:15 ` Linus Torvalds
2002-06-21 6:15 ` Eric W. Biederman
2002-06-21 17:50 ` Larry McVoy
2002-06-21 17:55 ` Robert Love
2002-06-21 18:09 ` Linux, the microkernel (was Re: latest linus-2.5 BK broken) Jeff Garzik
2002-06-21 18:46 ` Cort Dougan
2002-06-21 20:25 ` Daniel Phillips
2002-06-22 1:07 ` Horst von Brand
2002-06-22 1:23 ` Larry McVoy
2002-06-22 12:41 ` Roman Zippel
2002-06-23 15:15 ` Sandy Harris
2002-06-23 17:29 ` Jakob Oestergaard
2002-06-24 6:27 ` Craig I. Hagan
2002-06-24 13:06 ` J.A. Magallon
2002-06-24 10:59 ` Eric W. Biederman
2002-06-21 19:34 ` Rob Landley
2002-06-22 15:31 ` Alan Cox
2002-06-22 12:24 ` Rob Landley
2002-06-22 19:00 ` Ruth Ivimey-Cook
2002-06-22 21:09 ` jdow
2002-06-23 17:56 ` John Alvord
2002-06-23 20:48 ` jdow
2002-06-23 21:40 ` [OT] " Xavier Bestel
2002-06-22 18:25 ` latest linus-2.5 BK broken Eric W. Biederman
2002-06-22 19:26 ` Larry McVoy
2002-06-22 22:25 ` Eric W. Biederman
2002-06-22 23:10 ` Larry McVoy
2002-06-23 6:34 ` William Lee Irwin III
2002-06-23 22:56 ` Kai Henningsen
2002-06-20 17:16 ` RW Hawkins
2002-06-20 17:23 ` Cort Dougan
2002-06-20 20:40 ` Martin Dalecki
2002-06-20 20:53 ` Linus Torvalds
2002-06-20 21:27 ` Martin Dalecki
2002-06-20 21:37 ` Linus Torvalds
2002-06-20 21:59 ` Martin Dalecki
2002-06-20 22:18 ` Linus Torvalds
2002-06-20 22:41 ` Martin Dalecki
2002-06-21 0:09 ` Allen Campbell
2002-06-21 7:43 ` Zwane Mwaikambo
2002-06-21 21:02 ` Rob Landley
2002-06-22 3:57 ` (RFC)i386 arch autodetect( was Re: latest linus-2.5 BK broken ) Matthew D. Pitts
2002-06-22 4:54 ` William Lee Irwin III
2002-06-21 16:01 ` Re: latest linus-2.5 BK broken Sandy Harris
2002-06-21 20:38 ` Rob Landley
2002-06-20 21:13 ` Timothy D. Witham
2002-06-21 19:53 ` Rob Landley
2002-06-21 5:34 ` Eric W. Biederman
2002-06-19 10:21 ` Padraig Brady
2002-06-18 21:45 ` Bill Huey
2002-06-18 20:55 ` Robert Love
2002-06-19 13:31 ` Rusty Russell
2002-06-18 19:29 ` Benjamin LaHaise [this message]
2002-06-18 19:19 ` Zwane Mwaikambo
2002-06-18 19:49 ` Benjamin LaHaise
2002-06-18 19:27 ` Zwane Mwaikambo
2002-06-18 20:13 ` Rusty Russell
2002-06-18 20:21 ` Linus Torvalds
2002-06-18 22:03 ` Ingo Molnar
-- strict thread matches above, loose matches on Subject: below --
2002-06-18 23:38 Michael Hohnbaum
2002-06-18 23:57 ` Ingo Molnar
2002-06-19 0:08 ` Ingo Molnar
2002-06-19 1:00 ` Matthew Dobson
2002-06-19 23:48 ` Michael Hohnbaum
[not found] <E17KSLb-0007Dj-00@wagner.rustcorp.com.au>
2002-06-19 0:12 ` Linus Torvalds
2002-06-19 15:23 ` Rusty Russell
2002-06-19 16:28 ` Linus Torvalds
2002-06-19 20:57 ` Rusty Russell
2002-06-20 23:48 Miles Lane
2002-06-21 7:31 Martin Knoblauch
2002-06-21 12:59 Jesse Pollard
2002-06-24 21:28 Paul McKenney
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