Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752439AbaFFRNM (ORCPT ); Fri, 6 Jun 2014 13:13:12 -0400 Received: from g4t3426.houston.hp.com ([15.201.208.54]:36634 "EHLO g4t3426.houston.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752192AbaFFRNK (ORCPT ); Fri, 6 Jun 2014 13:13:10 -0400 Message-ID: <1402074788.6680.50.camel@j-VirtualBox> Subject: Re: [PATCH 1/2] locking/rwsem: Add CONFIG_RWSEM_SPIN_ON_OWNER From: Jason Low To: Davidlohr Bueso Cc: peterz@infradead.org, mingo@kernel.org, mpatocka@redhat.com, torvalds@linux-foundation.org, waiman.long@hp.com, jejb@parisc-linux.org, paulmck@linux.vnet.ibm.com, dave.anglin@bell.net, aswin@hp.com, linux-kernel@vger.kernel.org, linux-parisc@vger.kernel.org Date: Fri, 06 Jun 2014 10:13:08 -0700 In-Reply-To: <1402070140-15090-2-git-send-email-davidlohr@hp.com> References: <1402070140-15090-1-git-send-email-davidlohr@hp.com> <1402070140-15090-2-git-send-email-davidlohr@hp.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.3-0ubuntu6 Content-Transfer-Encoding: 7bit Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2014-06-06 at 08:55 -0700, Davidlohr Bueso wrote: > Just like with mutexes (CONFIG_MUTEX_SPIN_ON_OWNER), > encapsulate the dependencies for rwsem optimistic spinning. > No logical changes here as it continues to depend on both > SMP and the XADD algorithm variant. > > Signed-off-by: Davidlohr Bueso > --- > include/linux/rwsem.h | 4 ++-- > kernel/Kconfig.locks | 4 ++++ > kernel/locking/rwsem.c | 2 +- > 3 files changed, 7 insertions(+), 3 deletions(-) Do we also want to add an #ifdef CONFIG_RWSEM_SPIN_ON_OWNER in __init_rwsem() and in the optimistic spinning functions for rwsem-xadd? Besides that: Acked-by: Jason Low -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/