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From: "Américo Wang" <xiyou.wangcong@gmail.com>
To: Andy Lutomirski <luto@mit.edu>
Cc: "Yung, Winson W" <winson.w.yung@intel.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: Is there a way to offload everything from cpu0 to other cpus?
Date: Mon, 8 Aug 2011 17:41:39 +0800	[thread overview]
Message-ID: <CAM_iQpXRQ8C=y=DUt2pW_wQ_WKZU+2=ZBsGSPA2qmVATkTEQpA@mail.gmail.com> (raw)
In-Reply-To: <4E3BE686.7070501@mit.edu>

On Fri, Aug 5, 2011 at 8:48 PM, Andy Lutomirski <luto@mit.edu> wrote:
> On 08/04/2011 10:53 PM, Yung, Winson W wrote:
>>
>> Hi, I would like to know whether it is possible to offload everything
>> (kernel threads/user apps) to cpu1...x so that I can force cpu0 go into
>> idle?
>>
>> I can affinity all the interrupt to a different cpu by playing with the
>> /proc/irq/irqx/smp_affinity, how about everything else?
>>
>
> You probably want the isolcpus boot option.
>

I think Yung was looking for an interface to move tasks dynamically
after the system is boot.

Yung, why /sys/devices/system/cpu/cpuX/online doesn't work for you?

  reply	other threads:[~2011-08-08  9:41 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-08-05  2:53 Is there a way to offload everything from cpu0 to other cpus? Yung, Winson W
2011-08-05 12:48 ` Andy Lutomirski
2011-08-08  9:41   ` Américo Wang [this message]
2011-08-15  6:25     ` Gilad Ben-Yossef

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