linux-kernel - Re: [PATCHSET] workqueue: break local execution guarantee of unbound work items

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Message-ID: <CA+55aFycpbq8Wu7B=_3XpgjR9AEuM2wct+8MYuvEgEp_JrVeRg@mail.gmail.com>
Date:	Tue, 9 Feb 2016 16:53:12 -0800
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Tejun Heo <tj@...nel.org>
Cc:	Mike Galbraith <umgwanakikbuti@...il.com>,
	Michal Hocko <mhocko@...nel.org>, Jiri Slaby <jslaby@...e.cz>,
	Thomas Gleixner <tglx@...utronix.de>,
	Petr Mladek <pmladek@...e.com>, Jan Kara <jack@...e.cz>,
	Ben Hutchings <ben@...adent.org.uk>,
	Sasha Levin <sasha.levin@...cle.com>, Shaohua Li <shli@...com>,
	Daniel Bilik <daniel.bilik@...system.cz>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	kernel-team <kernel-team@...com>
Subject: Re: [PATCHSET] workqueue: break local execution guarantee of unbound
 work items

On Tue, Feb 9, 2016 at 3:14 PM, Tejun Heo <tj@...nel.org> wrote:
>
> This patchset reverts 874bbfe600a6 ("workqueue: make sure delayed work
> run in local cpu"), expands wq_unbound_cpu_mask so that it also
> applies to unbound work items queued on percpu workqueues, and
> implements a debug feature which forces wq_unbound_cpu_mask based
> round-robin selection to flush out usages which depend on the local
> execution guarantee.

Looks all very reasonable to me.

           Linus