From: Rusty Russell <rusty@rustcorp.com.au>
To: William Lee Irwin III <wli@holomorphy.com>
Cc: Paul Jackson <pj@sgi.com>,
mikpe@csd.uu.se,
lkml - Kernel Mailing List <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@osdl.org>
Subject: Re: [PATCH] cpumask 5/10 rewrite cpumask.h - single bitmap based implementation
Date: Sun, 06 Jun 2004 12:07:39 +1000 [thread overview]
Message-ID: <1086487651.11454.19.camel@bach> (raw)
In-Reply-To: <20040604181233.GF21007@holomorphy.com>
On Sat, 2004-06-05 at 04:12, William Lee Irwin III wrote:
> /* William Lee Irwin III:
> >> I'm thoroughly disgusted.
>
> On Fri, Jun 04, 2004 at 10:47:56AM -0700, Paul Jackson wrote:
> > Yup ... LOL. One sick piece of code.
We've been here before. I argued the userspace interface was broken to
require this looping, Linus said it was fine, Ingo said "userspace will
assume < 1024 cpus" and if we get more than that we'll need a new
interface, and that's what glibc does today with its cpu_set_t.
Shades of select-style pain, but it's not likely to change in the near
future.
Note also that saying "Schedule me on CPU 1 and 999" 'succeeds' at the
moment.
Yes, NR_CPUS needs to get to userspace somehow sanely if we want to fix
this in general.
Rusty.
--
Anyone who quotes me in their signature is an idiot -- Rusty Russell
next prev parent reply other threads:[~2004-06-06 2:08 UTC|newest]
Thread overview: 92+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-06-03 16:43 [PATCH] Bitmap and Cpumask Cleanup - Overview Paul Jackson
2004-06-03 17:05 ` [PATCH] cpumask 1/10 cpu_present_map real even on non-smp Paul Jackson
2004-06-03 17:09 ` [PATCH] cpumask 2/10 bitmap cleanup preparation for cpumask overhaul Paul Jackson
2004-06-03 17:09 ` [PATCH] cpumask 3/10 bitmap inlining and optimizations Paul Jackson
2004-06-03 17:09 ` [PATCH] cpumask 4/10 uninline find_next_bit on ia64 Paul Jackson
2004-06-03 17:10 ` [PATCH] cpumask 5/10 rewrite cpumask.h - single bitmap based implementation Paul Jackson
2004-06-04 0:07 ` Andrew Morton
2004-06-04 0:25 ` Andrew Morton
2004-06-04 2:58 ` Paul Jackson
2004-06-04 2:47 ` Paul Jackson
2004-06-04 2:54 ` David S. Miller
2004-06-04 5:02 ` Paul Jackson
2004-06-04 5:01 ` David S. Miller
2004-06-04 1:47 ` Rusty Russell
2004-06-04 2:02 ` Nick Piggin
2004-06-04 2:19 ` Rusty Russell
2004-06-04 5:18 ` Paul Jackson
2004-06-04 5:22 ` David S. Miller
2004-06-04 6:57 ` Paul Jackson
2004-06-04 9:31 ` Mikael Pettersson
2004-06-04 9:37 ` William Lee Irwin III
2004-06-04 9:46 ` Mikael Pettersson
2004-06-04 9:59 ` William Lee Irwin III
2004-06-04 11:16 ` Mikael Pettersson
2004-06-04 11:27 ` William Lee Irwin III
2004-06-04 11:32 ` William Lee Irwin III
2004-06-04 16:23 ` Paul Jackson
2004-06-04 16:28 ` William Lee Irwin III
2004-06-04 17:47 ` Paul Jackson
2004-06-04 18:12 ` William Lee Irwin III
2004-06-04 18:20 ` William Lee Irwin III
2004-06-04 18:27 ` Andrew Morton
2004-06-04 18:38 ` William Lee Irwin III
2004-06-05 2:51 ` William Lee Irwin III
2004-06-05 3:29 ` William Lee Irwin III
2004-06-04 18:42 ` Paul Jackson
2004-06-04 18:42 ` William Lee Irwin III
2004-06-05 6:48 ` Paul Jackson
2004-06-06 2:07 ` Rusty Russell [this message]
2004-06-06 12:16 ` Paul Jackson
2004-06-06 12:13 ` William Lee Irwin III
2004-06-06 12:28 ` Paul Jackson
2004-06-06 12:36 ` William Lee Irwin III
2004-06-06 13:42 ` Paul Jackson
2004-06-06 23:20 ` Rusty Russell
2004-06-07 6:44 ` Paul Jackson
2004-06-04 9:41 ` Andrew Morton
2004-06-05 7:01 ` Paul Jackson
2004-06-04 16:03 ` Paul Jackson
2004-06-04 16:56 ` William Lee Irwin III
2004-06-04 17:29 ` Paul Jackson
2004-06-04 17:52 ` William Lee Irwin III
2004-06-04 19:01 ` Paul Jackson
2004-06-04 19:08 ` Anton Blanchard
2004-06-04 19:17 ` William Lee Irwin III
2004-06-04 20:28 ` Andrew Morton
2004-06-07 7:55 ` Anton Blanchard
2004-06-05 7:28 ` Paul Jackson
2004-06-06 8:07 ` Paul Jackson
2004-06-06 8:16 ` William Lee Irwin III
2004-06-05 0:05 ` Paul Jackson
2004-06-05 1:31 ` William Lee Irwin III
2004-06-05 8:04 ` Paul Jackson
2004-06-05 8:26 ` William Lee Irwin III
2004-06-06 8:40 ` Paul Jackson
2004-06-06 12:34 ` Paul Jackson
2004-06-07 16:54 ` fix up compat_sched_[get/set]affinity Joe Korty
2004-06-07 17:07 ` William Lee Irwin III
2004-06-04 5:30 ` [PATCH] cpumask 5/10 rewrite cpumask.h - single bitmap based implementation Paul Jackson
2004-06-04 5:35 ` Nick Piggin
2004-06-04 5:40 ` Andrew Morton
2004-06-04 5:53 ` Nick Piggin
2004-06-04 6:47 ` Paul Jackson
2004-06-04 4:31 ` Paul Jackson
2004-06-04 8:19 ` William Lee Irwin III
2004-06-04 8:43 ` Keith Owens
2004-06-04 9:54 ` William Lee Irwin III
2004-06-04 17:08 ` Paul Jackson
2004-06-09 16:38 ` William Lee Irwin III
2004-06-04 9:14 ` Paul Jackson
2004-06-03 17:10 ` [PATCH] cpumask 6/10 remove 26 no longer used cpumask*.h files Paul Jackson
2004-06-03 17:10 ` [PATCH] cpumask 7/10 remove obsolete cpumask macro uses - i386 arch Paul Jackson
2004-06-03 17:10 ` [PATCH] cpumask 8/10 remove obsolete cpumask macro uses - other archs Paul Jackson
2004-06-03 17:11 ` [PATCH] cpumask 9/10 Remove no longer used obsolete macro emulation Paul Jackson
2004-06-03 17:11 ` [PATCH] cpumask 10/10 optimize various uses of new cpumasks Paul Jackson
2004-06-04 4:27 ` Rusty Russell
2004-06-04 4:40 ` Nick Piggin
2004-06-04 4:51 ` Paul Jackson
2004-06-09 0:09 ` PATCH] cpumask 11/10 comment, spacing tweaks Paul Jackson
-- strict thread matches above, loose matches on Subject: below --
2004-06-06 15:07 [PATCH] cpumask 5/10 rewrite cpumask.h - single bitmap based implementation Mikael Pettersson
2004-06-06 16:44 ` William Lee Irwin III
2004-06-06 17:46 ` Paul Jackson
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