From: Xie XiuQi <xiexiuqi@huawei.com>
To: Michael Wang <wangyun@linux.vnet.ibm.com>
Cc: Mike Galbraith <efault@gmx.de>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Ingo Molnar <mingo@elte.hu>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Li Zefan <lizefan@huawei.com>,
Zhang Hang <bob.zhanghang@huawei.com>,
Li Bin <huawei.libin@huawei.com>
Subject: Re: [PATCH] sched: fix cpu utilization account error
Date: Tue, 2 Jul 2013 12:15:06 +0800 [thread overview]
Message-ID: <51D253CA.5080204@huawei.com> (raw)
In-Reply-To: <51D24708.1060206@linux.vnet.ibm.com>
On 2013/7/2 11:20, Michael Wang wrote:
> Hi, Xie
>
> On 07/01/2013 07:26 PM, Xie XiuQi wrote:
> [snip]
>> Here is the kthread main logic. Although it's not a good idea, but it does
>> exist:
>> while (!kthread_should_stop()) {
>> /* call schedule every 1 sec */
>> if (HZ <= jiffies - last) {
>> last = jiffies;
>> schedule();
>> }
>>
>> /* get data and sent it */
>> get_msg();
>> send_msg();
>
> What about use cond_resched() here? Isn't that more gentle?
>
That's a good idea for driver implementation.
Thank you Michael.
> Regards,
> Michael Wang
>
next prev parent reply other threads:[~2013-07-02 4:15 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-01 6:45 [PATCH] sched: fix cpu utilization account error Xie XiuQi
2013-07-01 7:36 ` Mike Galbraith
2013-07-01 11:26 ` Xie XiuQi
2013-07-01 11:43 ` Mike Galbraith
2013-07-02 3:07 ` Mike Galbraith
2013-07-02 4:11 ` Xie XiuQi
2013-07-02 3:20 ` Michael Wang
2013-07-02 4:15 ` Xie XiuQi [this message]
2013-07-01 15:19 ` Greg KH
2013-07-02 1:41 ` Xie XiuQi
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