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
| ||
|
Date: Mon, 20 Dec 2010 17:18:40 +0100 From: Peter Zijlstra <a.p.zijlstra@...llo.nl> To: Frederic Weisbecker <fweisbec@...il.com> Cc: LKML <linux-kernel@...r.kernel.org>, Thomas Gleixner <tglx@...utronix.de>, "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>, Ingo Molnar <mingo@...e.hu>, Steven Rostedt <rostedt@...dmis.org>, Lai Jiangshan <laijs@...fujitsu.com>, Andrew Morton <akpm@...ux-foundation.org>, Anton Blanchard <anton@....ibm.com>, Tim Pepper <lnxninja@...ux.vnet.ibm.com> Subject: Re: [RFC PATCH 10/15] nohz_task: Enter in extended quiescent state when in userspace On Mon, 2010-12-20 at 16:24 +0100, Frederic Weisbecker wrote: > (we check if the local cpu is in nohz mode, which means > no other task compete on that CPU) You keep repeating that definition, but its not true.. It means there is not work for the tick to do, the tick does _tons_ more besides preemption, so nr_running==1 is necessary but not sufficient. -- 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/
Powered by blists - more mailing lists