linux-kernel - Re: [RFC PATCH 1/8] Convert the RCU tasklet into a softirq

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: <alpine.LFD.0.999.0707161322440.20061@woody.linux-foundation.org>
Date:	Mon, 16 Jul 2007 13:23:56 -0700 (PDT)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
cc:	Steven Rostedt <rostedt@...dmis.org>,
	LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Christoph Hellwig <hch@...radead.org>,
	john stultz <johnstul@...ibm.com>,
	Oleg Nesterov <oleg@...sign.ru>,
	Dipankar Sarma <dipankar@...ibm.com>,
	"David S. Miller" <davem@...emloft.net>, kuznet@....inr.ac.ru,
	Jonathan Corbet <corbet@....net>,
	Arjan van de Ven <arjan@...radead.org>,
	Arnd Bergmann <arnd@...db.de>
Subject: Re: [RFC PATCH 1/8] Convert the RCU tasklet into a softirq



On Mon, 16 Jul 2007, Paul E. McKenney wrote:
>
> On Wed, Jun 27, 2007 at 03:36:34PM -0400, Steven Rostedt wrote:
> > I believe this was originally done by Dipankar Sarma. I pulled these
> > changes from the -rt kernel.
> > 
> > For better preformance, RCU should use a softirq instead of a
> > tasklet.
> 
> Acked-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
> Tested-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
> 
> Tested with both kernbench and rcutorture on i386, x86_64, and ppc64.

Btw, are there any numbers on this? Is this whole thing actually 
noticeable?

		Linus
-
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/