linux-kernel - Re: [PATCH 12/13] hrtimer: create a "timer

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: <20080908064002.7abc2a22@infradead.org>
Date:	Mon, 8 Sep 2008 06:40:02 -0700
From:	Arjan van de Ven <arjan@...radead.org>
To:	Pavel Machek <pavel@...e.cz>
Cc:	linux-kernel@...r.kernel.org, torvalds@...ux-foundation.org,
	dwmw2@...radead.org, drepper@...hat.com, mingo@...e.hu,
	tglx@...x.de
Subject: Re: [PATCH 12/13] hrtimer: create a "timer_slack" field in the task
 struct

On Mon, 8 Sep 2008 15:27:16 +0200
Pavel Machek <pavel@...e.cz> wrote:
> > 
> > ... which nobody uses today.
> > It's not just new syscalls, it's a new glibc api as well at that
> > point.
> 
> ...and new applications, yes. I believe applications should
> explicitely enable slacking timers.

timers are slacking today, at least for select() and poll(), and are a
great deal more so than the defaults in this patchkit.

The great advantage of the prctl() approach (which is usable) over new
system calls and glibc APIs is that it will get used, because the admin
can use it just like he uses the "nice" command, on existing software.


-- 
If you want to reach me at my work email, use arjan@...ux.intel.com
For development, discussion and tips for power savings, 
visit http://www.lesswatts.org
--
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/