From: Paul Jackson <pj@sgi.com>
To: David Rientjes <rientjes@google.com>
Cc: menage@google.com, miaox@cn.fujitsu.com,
akpm@linux-foundation.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] cpusets: update tasks' cpus_allowed and mems_allowed after CPU/NODE offline/online
Date: Wed, 4 Jun 2008 14:42:21 -0500 [thread overview]
Message-ID: <20080604144221.de09b709.pj@sgi.com> (raw)
In-Reply-To: <alpine.DEB.1.10.0806041232190.22192@chino.kir.corp.google.com>
David wrote:
> No, because sched_setaffinity() can still move the threads.
Good point.
How about also adding this check (NULL mm and struct subset cpus)
to sched_setaffinity?
Granted, this pair of checks, in cpusets and sched_setaffinity,
is getting to be a little more work than the PF_* flag.
I guess one question would be how hard we want to work to avoid
consuming another PF_* flag. I thought they were scarce, but I
might be wrong.
--
I won't rest till it's the best ...
Programmer, Linux Scalability
Paul Jackson <pj@sgi.com> 1.940.382.4214
next prev parent reply other threads:[~2008-06-04 19:42 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-04 2:05 [PATCH 2/2] cpusets: update tasks' cpus_allowed and mems_allowed after CPU/NODE offline/online Miao Xie
2008-06-04 9:30 ` Paul Menage
2008-06-04 9:58 ` Paul Menage
2008-06-04 17:22 ` Paul Jackson
2008-06-04 19:01 ` David Rientjes
2008-06-04 19:25 ` Paul Jackson
2008-06-04 19:33 ` David Rientjes
2008-06-04 19:42 ` Paul Jackson [this message]
2008-06-04 20:02 ` David Rientjes
2008-06-04 20:21 ` Paul Jackson
-- strict thread matches above, loose matches on Subject: below --
2008-06-02 8:33 Miao Xie
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