linux-kernel - Re: [PATCH v8 2/2] nohz: set isolcpus when nohz

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] [day] [month] [year] [list]

Message-ID: <20150414164537.GN5029@twins.programming.kicks-ass.net>
Date:	Tue, 14 Apr 2015 18:45:37 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Frederic Weisbecker <fweisbec@...il.com>
Cc:	Chris Metcalf <cmetcalf@...hip.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v8 2/2] nohz: set isolcpus when nohz_full is set

On Tue, Apr 14, 2015 at 05:26:45PM +0200, Frederic Weisbecker wrote:
> On Tue, Apr 14, 2015 at 11:17:55AM -0400, Chris Metcalf wrote:
> > nohz_full is only useful with isolcpus also set, since otherwise the
> > scheduler has to run periodically to try to determine whether to steal
> > work from other cores.
> > 
> > Accordingly, when booting with nohz_full=xxx on the command line, we
> > should act as if isolcpus=xxx was also set, and set (or extend) the
> > isolcpus set to include the nohz_full cpus.
> > 
> > Acked-by: Frederic Weisbecker <fweisbec@...il.com>
> 
> No need to put my ack, since I'll add my Signed-off-by when I apply the patches.
> Note this won't go through this merge window though as we are in the middle of
> it already.
> 
> Peter, are you ok with these two patches?

Yeah,

Acked-by: Peter Zijlstra (Intel) <peterz@...radead.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/