linux-kernel - Re: [PATCH 2/2] cpusets: update tasks' cpus_allowed and mems

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Date:	Wed, 4 Jun 2008 12:22:27 -0500
From:	Paul Jackson <pj@....com>
To:	"Paul Menage" <menage@...gle.com>
Cc:	miaox@...fujitsu.com, akpm@...ux-foundation.org,
	linux-kernel@...r.kernel.org, rientjes@...gle.com
Subject: Re: [PATCH 2/2] cpusets: update tasks' cpus_allowed and
 mems_allowed after CPU/NODE offline/online

Paul M, quoting Miao Xie <miaox@...fujitsu.com>:
>>
>> Maybe we need to add a flag in the task_struct to mark which task can't be
>> unbound?

Do we need a new PF_* flag for this?  Perhaps one can test for this
by examining the currently available properties of tasks.  Would it
be sufficient to look for kernel threads (NULL mm_struct) whose
cpus_allowed is a strict subset of the online CPUs?

-- 
                  I won't rest till it's the best ...
                  Programmer, Linux Scalability
                  Paul Jackson <pj@....com> 1.940.382.4214
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