From: Tejun Heo <tj@kernel.org>
To: yalin wang <yalin.wang2010@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
laijs@cn.fujitsu.com, nacc@linux.vnet.ibm.com,
penguin-kernel@i-love.sakura.ne.jp,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Fwd: [RFC] make kthread_worker_fn to be freezable
Date: Wed, 3 Jun 2015 14:20:13 +0900 [thread overview]
Message-ID: <20150603052013.GA20091@mtj.duckdns.org> (raw)
In-Reply-To: <CAFP4FLp1zkS0LT64V=sLKCKEED+76016M3bX05n3RJF=KFS-zA@mail.gmail.com>
On Tue, Jun 02, 2015 at 11:13:44AM +0800, yalin wang wrote:
> this means i need create kthread like this :
>
> struct task_struct *kworker_task = kthread_run(kthread_worker_fn,
> &worker, "nvme%d", dev->instance);
> kworker_task->flags &= ~PF_NOFREEZE;
> is it safe to do like this ?
It's not.
> i don't see an API to set other thread to be freezable .
> only set_freezable() , which set the current thread to be freezable .
But you can create a wrapper kthread function which sets freezable and
calls kthread_worker_fn().
Thanks.
--
tejun
next prev parent reply other threads:[~2015-06-03 5:20 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <64da06e6.12ce6.14dae8b205f.Coremail.cn_wyl2003@126.com>
2015-06-01 10:05 ` Fwd: [RFC] make kthread_worker_fn to be freezable yalin wang
2015-06-01 11:40 ` Tejun Heo
2015-06-02 3:13 ` yalin wang
2015-06-03 5:20 ` Tejun Heo [this message]
2015-06-04 8:39 ` yalin wang
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