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From: Paul Jackson <pj@sgi.com>
To: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: akpm@linux-foundation.org, linux-kernel@vger.kernel.org
Subject: Re: wibbling over the cpuset shed domain connnection
Date: Tue, 2 Oct 2007 22:21:58 -0700	[thread overview]
Message-ID: <20071002222158.1a083348.pj@sgi.com> (raw)
In-Reply-To: <200710022236.59583.nickpiggin@yahoo.com.au>

> In the meantime, that patch should be merged though, shouldn't it?

Which patch do you refer to:
 1) the year old patch to disconnect cpusets and sched domains:
	cpuset-remove-sched-domain-hooks-from-cpusets.patch
 2) my patch of a few days ago to add a 'sched_load_balance' flag:
	cpuset and sched domains: sched_load_balance flag

I can't push one without the other, because some real time folks are
depending on the sched domain hooks that (1) would remove, so need some
alternative, such as in (2).  Even though (1) is rather broken, as you
note, it still provides a way that the real time folks can disable load
balancing at runtime on selected CPUs, so is essential to their work.

I can't delay any more resolving this, because the cgroup (aka
container) code is tangled up with (1), and Andrew needs a clear path
to send cgroups to Linus real soon now.

In my last message to you, a couple of days ago, I asked what I thought
were a couple of key and simple questions -- can sched domains overlap,
and what does it mean for user space if they overlap?  A further
question comes to mind now -- if sched domains can overlap, does this
provide some capability to user space that is important to provide?

Could you take a minute, Nick, to consider these questions?  Thanks.

-- 
                  I won't rest till it's the best ...
                  Programmer, Linux Scalability
                  Paul Jackson <pj@sgi.com> 1.925.600.0401

  reply	other threads:[~2007-10-03  5:22 UTC|newest]

Thread overview: 112+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-10-01 21:22 -mm merge plans for 2.6.24 Andrew Morton
2007-10-01 21:34 ` wibbling over the cpuset shed domain connnection Paul Jackson
2007-10-02 12:36   ` Nick Piggin
2007-10-03  5:21     ` Paul Jackson [this message]
2007-10-02 13:12       ` Nick Piggin
2007-10-03  7:00         ` Paul Jackson
2007-10-03 10:57           ` Andrew Morton
2007-10-02  4:21 ` Memory controller merge (was Re: -mm merge plans for 2.6.24) Balbir Singh
2007-10-02 15:46   ` Hugh Dickins
2007-10-03  8:13     ` Balbir Singh
2007-10-03 18:47       ` Hugh Dickins
2007-10-04  4:16         ` Balbir Singh
2007-10-04 13:16           ` Hugh Dickins
2007-10-05  3:07             ` Balbir Singh
2007-10-07 17:41               ` Hugh Dickins
2007-10-08  2:54                 ` Balbir Singh
2007-10-04 16:10     ` Paul Menage
2007-10-10 21:07   ` Rik van Riel
2007-10-11  6:33     ` Balbir Singh
2007-10-02  6:18 ` x86 patches was Re: -mm merge plans for 2.6.24 Andi Kleen
2007-10-02  6:32   ` Andrew Morton
2007-10-02  7:01     ` Andi Kleen
2007-10-02  7:18       ` Andrew Morton
2007-10-02  7:36         ` KAMEZAWA Hiroyuki
2007-10-02  7:43           ` Andrew Morton
2007-10-02  8:16             ` KAMEZAWA Hiroyuki
2007-10-02 10:48               ` Yasunori Goto
2007-10-02 18:18               ` Christoph Lameter
2007-10-02 17:25             ` Lee Schermerhorn
2007-10-02 16:40           ` Nish Aravamudan
2007-10-02 17:17           ` Lee Schermerhorn
2007-10-02 18:16           ` Christoph Lameter
2007-10-02  7:55         ` Matt Mackall
2007-10-02  7:59           ` Andi Kleen
2007-10-02  9:26       ` Andy Whitcroft
2007-10-02  7:37     ` Ingo Molnar
2007-10-02  7:46       ` Andi Kleen
2007-10-02  7:58         ` Thomas Gleixner
2007-10-02  7:59 ` v4l-stk11xx* [Was: -mm merge plans for 2.6.24] Jiri Slaby
     [not found] ` <4701FC79.3060608@gmail.com>
2007-10-02  8:10   ` Wireless damage " Jiri Slaby
2007-10-02  8:17 ` per BDI dirty limit (was Re: -mm merge plans for 2.6.24) Peter Zijlstra
     [not found]   ` <20071002082831.GA19954@mail.ustc.edu.cn>
2007-10-02  8:28     ` Fengguang Wu
2007-10-02  8:31   ` Andrew Morton
2007-10-02  8:48     ` Peter Zijlstra
2007-10-02 10:31       ` Kay Sievers
2007-10-02 10:44         ` Peter Zijlstra
     [not found]           ` <20071002104734.GA9410@mail.ustc.edu.cn>
2007-10-02 10:47             ` Fengguang Wu
2007-10-02 11:22               ` Kay Sievers
     [not found]                 ` <20071002112802.GA12607@mail.ustc.edu.cn>
2007-10-02 11:28                   ` Fengguang Wu
2007-10-02 11:21           ` Kay Sievers
2007-10-02 11:40             ` Peter Zijlstra
2007-10-02 12:05               ` Nick Piggin
2007-10-03 10:15                 ` Kay Sievers
2007-10-03 10:37                   ` Peter Zijlstra
2007-10-03 13:35                     ` Kay Sievers
2007-10-03 13:58                       ` Peter Zijlstra
2007-10-26 14:48                       ` Peter Zijlstra
2007-10-26 15:06                         ` Miklos Szeredi
2007-10-26 15:10                         ` Kay Sievers
2007-10-26 15:22                           ` Peter Zijlstra
2007-10-26 15:33                             ` Kay Sievers
2007-10-26 15:33                               ` Peter Zijlstra
2007-10-26 15:55                                 ` Kay Sievers
2007-10-26 20:04                                   ` Peter Zijlstra
2007-10-27  1:18                                     ` Peter Zijlstra
2007-10-27  2:40                                       ` Greg KH
2007-10-27  8:39                                         ` Peter Zijlstra
2007-10-27 16:02                                           ` Greg KH
2007-10-27 16:07                                             ` Peter Zijlstra
2007-10-27 21:08                                             ` Kay Sievers
2007-10-27 21:35                                               ` Peter Zijlstra
2007-10-28  7:10                                                 ` Greg KH
2007-11-02 13:15                                               ` Peter Zijlstra
2007-11-02 13:50                                                 ` Kay Sievers
2007-11-02 13:54                                                   ` Peter Zijlstra
2007-11-02 14:17                                                   ` Peter Zijlstra
2007-11-02 14:32                                                     ` Kay Sievers
2007-11-02 14:59                                                       ` [PATCH] mm: sysfs: expose the BDI object in sysfs Peter Zijlstra
2007-11-02 15:13                                                         ` Kay Sievers
2007-10-26 16:37                         ` per BDI dirty limit (was Re: -mm merge plans for 2.6.24) Trond Myklebust
2007-12-14 14:50                           ` Peter Zijlstra
2007-12-14 15:14                             ` Miklos Szeredi
2007-12-14 15:54                               ` Peter Zijlstra
2007-10-02 14:38               ` Kay Sievers
2007-10-03 11:00   ` Martin Knoblauch
     [not found] ` <20071002083922.GA28892@mail.ustc.edu.cn>
2007-10-02  8:39   ` writeback fixes Fengguang Wu
2007-10-02 16:06 ` kswapd min order, slub max order [was Re: -mm merge plans for 2.6.24] Hugh Dickins
2007-10-02  9:10   ` Nick Piggin
2007-10-02 18:38   ` Mel Gorman
2007-10-02 18:28     ` Christoph Lameter
2007-10-03  0:37       ` Christoph Lameter
2007-10-02 16:12 ` -mm merge plans for 2.6.24 Pekka Enberg
2007-10-02 16:21 ` new aops merge [was Re: -mm merge plans for 2.6.24] Hugh Dickins
2007-10-02 17:45 ` remove zero_page (was Re: -mm merge plans for 2.6.24) Nick Piggin
2007-10-03 10:58   ` Andrew Morton
2007-10-03 15:21   ` Linus Torvalds
2007-10-08 15:17     ` Nick Piggin
2007-10-09 13:00       ` Hugh Dickins
2007-10-09 14:52       ` Linus Torvalds
2007-10-09  9:31         ` Nick Piggin
2007-10-10  2:22           ` Linus Torvalds
2007-10-09 10:15             ` Nick Piggin
2007-10-10  3:06               ` Linus Torvalds
2007-10-10  4:06               ` Hugh Dickins
2007-10-10  5:20                 ` Linus Torvalds
2007-10-09 14:30                   ` Nick Piggin
2007-10-10 15:04                     ` Linus Torvalds
2007-10-03 19:50 ` A kernel Tracing interface " David Wilder
2007-10-09  9:19 ` r/o bind mounts, was Re: -mm merge plans for 2.6.24 Christoph Hellwig
2007-10-13  8:44 ` Borislav Petkov
2007-10-13  8:52   ` Andrew Morton
2007-10-13 11:45     ` Borislav Petkov

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