From owner-svn-src-all@freebsd.org Mon May 25 12:44:08 2020 Return-Path: Delivered-To: svn-src-all@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 0F87B2FEA3B; Mon, 25 May 2020 12:44:08 +0000 (UTC) (envelope-from manu@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) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 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 49Vxc76kNNz3TF6; Mon, 25 May 2020 12:44:07 +0000 (UTC) (envelope-from manu@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 E0915126B1; Mon, 25 May 2020 12:44:07 +0000 (UTC) (envelope-from manu@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 04PCi7ZD040810; Mon, 25 May 2020 12:44:07 GMT (envelope-from manu@FreeBSD.org) Received: (from manu@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 04PCi7YN040809; Mon, 25 May 2020 12:44:07 GMT (envelope-from manu@FreeBSD.org) Message-Id: <202005251244.04PCi7YN040809@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: manu set sender to manu@FreeBSD.org using -f From: Emmanuel Vadot Date: Mon, 25 May 2020 12:44:07 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r361450 - head/sys/compat/linuxkpi/common/include/linux X-SVN-Group: head X-SVN-Commit-Author: manu X-SVN-Commit-Paths: head/sys/compat/linuxkpi/common/include/linux X-SVN-Commit-Revision: 361450 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 25 May 2020 12:44:08 -0000 Author: manu Date: Mon May 25 12:44:07 2020 New Revision: 361450 URL: https://svnweb.freebsd.org/changeset/base/361450 Log: linuxkpi: Add refcount.h Implement some refcount functions needed by drm. Just use the atomic_t struct and functions from linuxkpi for simplicity. Sponsored-by: The FreeBSD Foundation Reviewed by: hselsasky Differential Revision: https://reviews.freebsd.org/D24985 Added: head/sys/compat/linuxkpi/common/include/linux/refcount.h (contents, props changed) Added: head/sys/compat/linuxkpi/common/include/linux/refcount.h ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/sys/compat/linuxkpi/common/include/linux/refcount.h Mon May 25 12:44:07 2020 (r361450) @@ -0,0 +1,82 @@ +/*- + * Copyright (c) 2020 The FreeBSD Foundation + * + * This software was developed by Emmanuel Vadot under sponsorship + * from the FreeBSD Foundation. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#ifndef _LINUX_REFCOUNT_H +#define _LINUX_REFCOUNT_H + +#include + +struct refcount_linux { + atomic_t value; +}; +typedef struct refcount_linux refcount_t; + +static inline void +refcount_set(refcount_t *ref, unsigned int i) +{ + atomic_set(&ref->value, i); +} + +static inline void +refcount_inc(refcount_t *ref) +{ + atomic_inc(&ref->value); +} + +static inline bool +refcount_inc_not_zero(refcount_t *ref) +{ + return (atomic_inc_not_zero(&ref->value)); +} + +static inline void +refcount_dec(refcount_t *ref) +{ + atomic_dec(&ref->value); +} + +static inline unsigned int +refcount_read(refcount_t *ref) +{ + return atomic_read(&ref->value); +} + +static inline bool +refcount_dec_and_lock_irqsave(refcount_t *ref, spinlock_t *lock, + unsigned long *flags) +{ + if (atomic_dec_and_test(&ref->value) == true) { + spin_lock_irqsave(lock, flags); + return (true); + } + return (false); +} + +#endif /* __LINUX_REFCOUNT_H__ */