From: Paul Jackson <pj@sgi.com>
To: "Siddha, Suresh B" <suresh.b.siddha@intel.com>
Cc: nickpiggin@yahoo.com.au, akpm@osdl.org, mbligh@google.com,
menage@google.com, Simon.Derr@bull.net,
linux-kernel@vger.kernel.org, dino@in.ibm.com,
rohitseth@google.com, holt@sgi.com, dipankar@in.ibm.com,
suresh.b.siddha@intel.com, clameter@sgi.com
Subject: Re: [RFC] cpuset: add interface to isolated cpus
Date: Fri, 20 Oct 2006 18:33:24 -0700 [thread overview]
Message-ID: <20061020183324.b29caa37.pj@sgi.com> (raw)
In-Reply-To: <20061020135944.B8481@unix-os.sc.intel.com>
Suresh wrote:
> Its just a corner case issue that Nick didn't consider while doing a quick
> patch. Nick meant to partition the sched domain at the top
> exclusive cpuset and he probably missed the case where root cpuset is marked
> as exclusive.
This makes no sense.
If P is a partition of S, that means that P is a set of subsets of
S such that the intersection of any two members of P is empty, and
the union of the members of P equals S.
If P is a partition of S, then adding S itself to P as another member
makes P no longer a partion, for then every element of S is in two
elements of P, not one.
--
I won't rest till it's the best ...
Programmer, Linux Scalability
Paul Jackson <pj@sgi.com> 1.925.600.0401
next prev parent reply other threads:[~2006-10-21 1:33 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-19 9:26 [RFC] cpuset: add interface to isolated cpus Paul Jackson
2006-10-19 10:17 ` Nick Piggin
2006-10-19 17:55 ` Paul Jackson
2006-10-19 18:07 ` Nick Piggin
2006-10-19 18:56 ` Paul Jackson
2006-10-19 19:03 ` Nick Piggin
2006-10-20 3:37 ` Paul Jackson
2006-10-20 8:02 ` Nick Piggin
2006-10-20 14:52 ` Nick Piggin
2006-10-20 20:03 ` Paul Jackson
2006-10-20 19:59 ` Paul Jackson
2006-10-20 20:01 ` Paul Jackson
2006-10-20 20:59 ` Siddha, Suresh B
2006-10-21 1:33 ` Paul Jackson [this message]
2006-10-21 6:14 ` Nick Piggin
2006-10-21 7:24 ` Paul Jackson
2006-10-21 10:51 ` Nick Piggin
2006-10-22 4:54 ` Paul Jackson
2006-10-20 21:04 ` Dinakar Guniguntala
2006-10-23 3:18 ` Paul Jackson
2006-10-23 5:07 ` Nick Piggin
2006-10-23 5:51 ` Paul Jackson
2006-10-23 5:40 ` Siddha, Suresh B
2006-10-23 6:06 ` Paul Jackson
2006-10-23 6:07 ` Paul Jackson
2006-10-23 6:17 ` Nick Piggin
2006-10-23 6:41 ` Paul Jackson
2006-10-23 6:49 ` Nick Piggin
2006-10-23 6:48 ` Paul Jackson
2006-10-23 20:58 ` Paul Jackson
2006-10-23 19:50 ` Dinakar Guniguntala
2006-10-23 20:47 ` Paul Jackson
2006-10-24 15:44 ` Paul Jackson
2006-10-25 19:40 ` Paul Jackson
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