From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755942Ab3LRTQf (ORCPT ); Wed, 18 Dec 2013 14:16:35 -0500 Received: from merlin.infradead.org ([205.233.59.134]:56663 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755771Ab3LRTPk (ORCPT ); Wed, 18 Dec 2013 14:15:40 -0500 Message-Id: <20131218190806.370008594@infradead.org> User-Agent: quilt/0.60-1 Date: Wed, 18 Dec 2013 20:08:06 +0100 From: Peter Zijlstra To: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org Cc: geert@linux-m68k.org, paulmck@linux.vnet.ibm.com, torvalds@linux-foundation.org, VICTORK@il.ibm.com, oleg@redhat.com, anton@samba.org, benh@kernel.crashing.org, fweisbec@gmail.com, mathieu.desnoyers@polymtl.ca, michael@ellerman.id.au, mikey@neuling.org, linux@arm.linux.org.uk, schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com, tony.luck@intel.com, Peter Zijlstra Subject: [PATCH 0/4] arch: Introduce smp_load_acquire() and smp_store_release() Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This should hopefully be the last posting of this series -- people felt it needed one more mostly because last time I typoed the linux-kernel email address. If there are no further comments, Ingo will merge these patches in the next few days. --- These patches introduce 2 new barrier primitives: smp_load_acquire(p) smp_store_release(p, v) See the first patch, which changes Documentation/memory-barriers.txt, to find the exact definitions of what an ACQUIRE/RELEASE barrier is -- previously known as LOCK/UNLOCK barriers. The second patch moves the smp_mb__{before,after}_atomic_{dec,inc}() barriers to asm/atomic.h for arc and hexagon -- they were already there for all other archs. This cleans up asm/barrier.h, and the third patch makes more agressive use of asm-generic/barrier.h to implement the simple cases. Then the fourth patch adds the new primitives. Previous versions were widely build tested -- this version is not, but it also not significantly different. These patches apply to: tip/master --- Changes since the last version -- lkml.kernel.org/r/20131213145657.265414969@infradead.org - fixed linux-kernel email address - updated the Documentation patch