linux-kernel - Re: [PATCH/RFC] workqueue: allow rescuer thread to do more work.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 4 Nov 2014 09:22:40 -0500
From:	Tejun Heo <tj@...nel.org>
To:	NeilBrown <neilb@...e.de>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH/RFC] workqueue: allow rescuer thread to do more work.

Hello, Neil.

Sorry about the delay.

On Thu, Oct 30, 2014 at 10:19:32AM +1100, NeilBrown wrote:
> >                           Given that workder depletion is pool-wide
> > event, maybe it'd make sense to trigger rescuers immediately while
> > workers are in short supply?  e.g. while there's a manager stuck in
> > maybe_create_worker() with the mayday timer already triggered?
> 
> So what if I change "need_more_worker" to "need_to_create_worker" ?
> Then it will stop as soon as there in an idle worker thread.
> That is the condition that keeps maybe_create_worker() looping.
> ??

Yeah, that'd be a better condition and can work out.  Can you please
write up a patch to do that and do some synthetic tests excercising
the code path?  Also please cc Lai Jiangshan <laijs@...fujitsu.com>
when posting the patch.

Thanks.

-- 
tejun
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/