linux-kernel - Re: [RFC v2 0/5] cgroup-aware unbound workqueues

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Message-ID: <20190611195210.GK3341036@devbig004.ftw2.facebook.com>
Date:   Tue, 11 Jun 2019 12:52:10 -0700
From:   Tejun Heo <tj@...nel.org>
To:     Mike Rapoport <rppt@...ux.ibm.com>
Cc:     Daniel Jordan <daniel.m.jordan@...cle.com>, hannes@...xchg.org,
        jiangshanlai@...il.com, lizefan@...wei.com, bsd@...hat.com,
        dan.j.williams@...el.com, dave.hansen@...el.com,
        juri.lelli@...hat.com, mhocko@...nel.org, peterz@...radead.org,
        steven.sistare@...cle.com, tglx@...utronix.de,
        tom.hromatka@...cle.com, vdavydov.dev@...il.com,
        cgroups@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org
Subject: Re: [RFC v2 0/5] cgroup-aware unbound workqueues

Hello,

On Thu, Jun 06, 2019 at 09:15:26AM +0300, Mike Rapoport wrote:
> > Can you please go into more details on the use cases?
> 
> If I remember correctly, the original Bandan's work was about using
> workqueues instead of kthreads in vhost. 

For vhosts, I think it might be better to stick with kthread or
kthread_worker given that they can consume lots of cpu cycles over a
long period of time and we want to keep persistent track of scheduling
states.

Thanks.

-- 
tejun