linux-kernel - Re: [GIT PULL] nohz: Full dynticks base interface

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, 26 Mar 2013 09:15:27 +0100
From:	Ingo Molnar <mingo@...nel.org>
To:	Frederic Weisbecker <fweisbec@...il.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Chris Metcalf <cmetcalf@...era.com>,
	Christoph Lameter <cl@...ux.com>,
	Geoff Levand <geoff@...radead.org>,
	Gilad Ben Yossef <gilad@...yossef.com>,
	Hakan Akkan <hakanakkan@...il.com>,
	Kevin Hilman <khilman@...aro.org>,
	Li Zhong <zhong@...ux.vnet.ibm.com>,
	Namhyung Kim <namhyung.kim@....com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [GIT PULL] nohz: Full dynticks base interface


* Frederic Weisbecker <fweisbec@...il.com> wrote:

> > That way I will be able to test it automatically via randconfig and 
> > such.
> 
> Sure, I'm adding such an option.
> 
> > My next question/request after that would be: could we make sure that 
> > enabling this option does not break any applications or kernel 
> > functionality, ASAP? Once that is offered, it becomes pushable to 
> > v3.10 I think.
> 
> So that's already the case. I'm careful that, as we iterate, the changes 
> aren't supposed to break something in the middle. the final code that 
> eventually shuts the tick down should be the last one in the series: 
> once we know it is safe to do so.

I mean, with the .config (or boot) option enabled, with tip:timers/nohz 
as-is, will everything work? We cannot push a feature to Linus that 
doesn't work reliably when enabled ...

Thanks,

	Ingo
--
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/