From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757538AbcHWMvQ (ORCPT ); Tue, 23 Aug 2016 08:51:16 -0400 Received: from bombadil.infradead.org ([198.137.202.9]:60519 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753464AbcHWMvN (ORCPT ); Tue, 23 Aug 2016 08:51:13 -0400 Message-Id: <20160823124856.831187707@infradead.org> User-Agent: quilt/0.63-1 Date: Tue, 23 Aug 2016 14:46:19 +0200 From: Peter Zijlstra To: Linus Torvalds , Waiman Long , Jason Low , Ding Tianhong , Thomas Gleixner , Will Deacon , Ingo Molnar , Imre Deak , Linux Kernel Mailing List , Davidlohr Bueso , Tim Chen , Terry Rudd , "Paul E. McKenney" , Jason Low , Peter Zijlstra Subject: [RFC][PATCH 2/3] locking/mutex: Allow MUTEX_SPIN_ON_OWNER when DEBUG_MUTEXES References: <20160823124617.015645861@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline; filename=peterz-locking-mutex-enable-spin_on_owner-debug.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Now that mutex::count and mutex::owner are the same field, we can allow SPIN_ON_OWNER while DEBUG_MUTEX. Signed-off-by: Peter Zijlstra (Intel) --- kernel/Kconfig.locks | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/kernel/Kconfig.locks +++ b/kernel/Kconfig.locks @@ -225,7 +225,7 @@ config ARCH_SUPPORTS_ATOMIC_RMW config MUTEX_SPIN_ON_OWNER def_bool y - depends on SMP && !DEBUG_MUTEXES && ARCH_SUPPORTS_ATOMIC_RMW + depends on SMP && ARCH_SUPPORTS_ATOMIC_RMW config RWSEM_SPIN_ON_OWNER def_bool y