From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Paul E. McKenney" Subject: Re: [PATCH 0/6] support "dataplane" mode for nohz_full Date: Mon, 11 May 2015 10:19:16 -0700 Message-ID: <20150511171916.GN6776@linux.vnet.ibm.com> References: <1431107927-13998-1-git-send-email-cmetcalf@ezchip.com> <20150508141824.797eb0d89d514e39fd30fffe@linux-foundation.org> <20150508172210.559830a9@gandalf.local.home> <554D428E.6020702@ezchip.com> <20150508161909.308d60e21f6b83b897174276@linux-foundation.org> <20150509070538.GA9413@gmail.com> <20150511085759.71deeb64@gandalf.local.home> Reply-To: paulmck@linux.vnet.ibm.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20150511085759.71deeb64@gandalf.local.home> Sender: linux-doc-owner@vger.kernel.org To: Steven Rostedt Cc: Ingo Molnar , Andrew Morton , Chris Metcalf , Gilad Ben Yossef , Ingo Molnar , Peter Zijlstra , Rik van Riel , Tejun Heo , Frederic Weisbecker , Thomas Gleixner , Christoph Lameter , "Srivatsa S. Bhat" , linux-doc@vger.kernel.org, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-api@vger.kernel.org On Mon, May 11, 2015 at 08:57:59AM -0400, Steven Rostedt wrote: > > NO_HZ_LEAVE_ME_THE_FSCK_ALONE! NO_HZ_OVERFLOWING? Kconfig naming controversy aside, I believe this patchset is addressing a real need. Might need additional adjustment, but something useful. Thanx, Paul > On Sat, 9 May 2015 09:05:38 +0200 > Ingo Molnar wrote: > > > So I think we should either rename NO_HZ_FULL to NO_HZ_PURE, or keep > > it at NO_HZ_FULL: because the intention of NO_HZ_FULL was always to be > > such a 'zero overhead' mode of operation, where if user-space runs, it > > won't get interrupted in any way. > > > All kidding aside, I think this is the real answer. We don't need a new > NO_HZ, we need to make NO_HZ_FULL work. Right now it doesn't do exactly > what it was created to do. That should be fixed. > > Please lets get NO_HZ_FULL up to par. That should be the main focus. > > -- Steve >