linux-kernel - Re: How can I migrate a currently running task?

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Message-ID: <b647ffbd0806270727m36ec7324odab60e0591d26891@mail.gmail.com>
Date:	Fri, 27 Jun 2008 16:27:25 +0200
From:	"Dmitry Adamushko" <dmitry.adamushko@...il.com>
To:	"夏亮" <xiaiaxaxi@...u.edu.cn>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: How can I migrate a currently running task?

2008/6/27 夏亮 <xiaiaxaxi@...u.edu.cn>:
> Hi,
>
>      I am working on Intel Duo Core with Linux OS 2.6.21, and I'd like to
> migrate task from one cpu to another cpu.
> In SMP systems, load_balance() function uses move_tasks() to move processes
> from source runqueue to local runqueue, but it does not move a currently
> running task. If I want to migrate a currently running task from source
> runqueue to local runqueue, how can I do? Any suggestion is preferred.
> Thanks!

Some high-prio task takes away CPU from a 'target' task and then
pushes it onto another CPU. That's what 'migration_thread' does.

Take a look at use-cases of migrate_task() in sched.c.

>
>    Liang
>

-- 
Best regards,
Dmitry Adamushko
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