linux-kernel - Re: [PATCH RFC] sched: introduce add_wait_queue_exclusive

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]

Message-ID: <CF4FEF90.9AF19%andreas.dilger@intel.com>
Date:	Thu, 20 Mar 2014 07:06:48 +0000
From:	"Dilger, Andreas" <andreas.dilger@...el.com>
To:	Peter Zijlstra <peterz@...radead.org>
CC:	Oleg Nesterov <oleg@...hat.com>, Peng Tao <bergwolf@...il.com>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...hat.com>,
	"Drokin, Oleg" <oleg.drokin@...el.com>
Subject: Re: [PATCH RFC] sched: introduce add_wait_queue_exclusive_head

On 2014/03/19, 1:55 PM, "Peter Zijlstra" <peterz@...radead.org> wrote:

>On Wed, Mar 19, 2014 at 07:44:29PM +0000, Dilger, Andreas wrote:
>> The original reason for l_wait_event() not using TASK_UNINTERRUPTIBLE
>> is to avoid the load on the server continually being
>>"num_service_threads"
>> regardless of whether they are actually doing something or not.  We
>> added various cases for periodic wakeups and such afterward.
>
>Hmm, maybe we should finally do the TASK_IDLE thing;
>
>  https://lkml.org/lkml/2013/11/12/710

That looks pretty interesting, and appears to do what we need.

Cheers, Andreas
-- 
Andreas Dilger

Lustre Software Architect
Intel High Performance Data Division


--
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/