From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934199AbcKNR1C (ORCPT ); Mon, 14 Nov 2016 12:27:02 -0500 Received: from relay4-d.mail.gandi.net ([217.70.183.196]:50184 "EHLO relay4-d.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932458AbcKNR04 (ORCPT ); Mon, 14 Nov 2016 12:26:56 -0500 X-Originating-IP: 50.39.170.172 Date: Mon, 14 Nov 2016 09:26:45 -0800 From: Josh Triplett To: "Paul E. McKenney" Cc: linux-kernel@vger.kernel.org, mingo@kernel.org, jiangshanlai@gmail.com, dipankar@in.ibm.com, akpm@linux-foundation.org, mathieu.desnoyers@efficios.com, tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com, dvhart@linux.intel.com, fweisbec@gmail.com, oleg@redhat.com, bobby.prani@gmail.com Subject: Re: [PATCH tip/core/rcu 0/7] Miscellaneous fixes for 4.10 Message-ID: <20161114172645.jepjfxqso3ujep3s@jtriplet-mobl2.jf.intel.com> References: <20161114165648.GA15216@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20161114165648.GA15216@linux.vnet.ibm.com> User-Agent: NeoMutt/20161104 (1.7.1) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Nov 14, 2016 at 08:56:48AM -0800, Paul E. McKenney wrote: > Hello! > > This series contains miscellaneous fixes to RCU: > > 1. Tighten up __call_rcu's alignment check for the rcu_head structure > now that no arch does two-byte alignment of pointers. > > 2. Remove obsolete comment about when rcu_check_callbacks() was invoked. > > 3. Remove obsolete comment about which function opportunistically > notes grace periods beginnings and endings. > > 4. Update the RCU_TRACE Kconfig option's help text to note that > it enables event tracing in addition to debugfs, courtesy of > Nikolay Borisov. > > 5. Add event tracing for long read-side delays in rcutorture > in order to better debug too-short grace periods. > > 6. Make expedited grace periods recheck dyntick-idle state to avoid > sending needless IPIs. > > 7. Don't kick CPUs unless there is grace-period activity currently > in progress. I replied to patches 5 and 6 with comments. For 1-4 and 7: Reviewed-by: Josh Triplett