From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 460C4C282D7 for ; Wed, 30 Jan 2019 11:19:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 230DE20869 for ; Wed, 30 Jan 2019 11:19:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730411AbfA3LS7 (ORCPT ); Wed, 30 Jan 2019 06:18:59 -0500 Received: from mga05.intel.com ([192.55.52.43]:23826 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727500AbfA3LS7 (ORCPT ); Wed, 30 Jan 2019 06:18:59 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 30 Jan 2019 03:18:59 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.56,540,1539673200"; d="scan'208";a="129725718" Received: from elena-thinkpad-x230.fi.intel.com ([10.237.68.34]) by FMSMGA003.fm.intel.com with ESMTP; 30 Jan 2019 03:18:57 -0800 From: Elena Reshetova To: peterz@infradead.org Cc: linux-kernel@vger.kernel.org, dvyukov@google.com, andrea.parri@amarulasolutions.com, stern@rowland.harvard.edu, keescook@chromium.org, Elena Reshetova Subject: [PATCH v2] Adding smp_acquire__after_ctrl_dep barrier Date: Wed, 30 Jan 2019 13:18:50 +0200 Message-Id: <1548847131-27854-1-git-send-email-elena.reshetova@intel.com> X-Mailer: git-send-email 2.7.4 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Changes in v2: - hopefully fixed all (at least to my eye and to checkpatch) errors on whitespacing, etc. - changed text on ACQUIRE guarantees pointed by Andrea and Dmitry - removed mentioning of control dependency on dec/sub_and_test variants I also have to send it now with a cover letter, because I think it is Intel mailer that malformed the patch last time for god knows what reason... Elena Reshetova (1): refcount_t: add ACQUIRE ordering on success for dec(sub)_and_test variants Documentation/core-api/refcount-vs-atomic.rst | 24 +++++++++++++++++++++--- arch/x86/include/asm/refcount.h | 22 ++++++++++++++++++---- lib/refcount.c | 18 +++++++++++++----- 3 files changed, 52 insertions(+), 12 deletions(-) -- 2.7.4