From owner-svn-src-stable-12@freebsd.org Wed Apr 15 04:52:11 2020 Return-Path: Delivered-To: svn-src-stable-12@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 66CEB2AACAC; Wed, 15 Apr 2020 04:52:11 +0000 (UTC) (envelope-from hselasky@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 49292327Xnz4G3j; Wed, 15 Apr 2020 04:52:11 +0000 (UTC) (envelope-from hselasky@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 440DC197FF; Wed, 15 Apr 2020 04:52:11 +0000 (UTC) (envelope-from hselasky@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 03F4qB6O013989; Wed, 15 Apr 2020 04:52:11 GMT (envelope-from hselasky@FreeBSD.org) Received: (from hselasky@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 03F4qBxh013988; Wed, 15 Apr 2020 04:52:11 GMT (envelope-from hselasky@FreeBSD.org) Message-Id: <202004150452.03F4qBxh013988@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: hselasky set sender to hselasky@FreeBSD.org using -f From: Hans Petter Selasky Date: Wed, 15 Apr 2020 04:52:11 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r359955 - stable/12/sys/compat/linuxkpi/common/include/linux X-SVN-Group: stable-12 X-SVN-Commit-Author: hselasky X-SVN-Commit-Paths: stable/12/sys/compat/linuxkpi/common/include/linux X-SVN-Commit-Revision: 359955 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable-12@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: SVN commit messages for only the 12-stable src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 15 Apr 2020 04:52:11 -0000 Author: hselasky Date: Wed Apr 15 04:52:10 2020 New Revision: 359955 URL: https://svnweb.freebsd.org/changeset/base/359955 Log: MFC r359726: Some fixes for SRCU in the LinuxKPI. - Make sure to use READ_ONCE() when deferring variables. - Remove superfluous zero initializer. Sponsored by: Mellanox Technologies Modified: stable/12/sys/compat/linuxkpi/common/include/linux/srcu.h Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/compat/linuxkpi/common/include/linux/srcu.h ============================================================================== --- stable/12/sys/compat/linuxkpi/common/include/linux/srcu.h Wed Apr 15 04:03:46 2020 (r359954) +++ stable/12/sys/compat/linuxkpi/common/include/linux/srcu.h Wed Apr 15 04:52:10 2020 (r359955) @@ -1,5 +1,5 @@ /*- - * Copyright (c) 2015-2017 Mellanox Technologies, Ltd. + * Copyright (c) 2015-2020 Mellanox Technologies, Ltd. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -29,13 +29,16 @@ #ifndef _LINUX_SRCU_H_ #define _LINUX_SRCU_H_ +#include + struct srcu_struct { }; -#define srcu_dereference(ptr,srcu) ((__typeof(*(ptr)) *)(ptr)) +#define srcu_dereference(p, srcu) \ + ((__typeof(*(p)) *)READ_ONCE(p)) #define DEFINE_STATIC_SRCU(name) \ - static struct srcu_struct name = {} + static struct srcu_struct name /* prototypes */