From owner-svn-src-all@freebsd.org Mon Dec 26 10:41:53 2016 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 52CA8C0B32E; Mon, 26 Dec 2016 10:41:53 +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 mx1.freebsd.org (Postfix) with ESMTPS id 03EF3875; Mon, 26 Dec 2016 10:41:52 +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 uBQAfqAB047026; Mon, 26 Dec 2016 10:41:52 GMT (envelope-from hselasky@FreeBSD.org) Received: (from hselasky@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id uBQAfqCs047025; Mon, 26 Dec 2016 10:41:52 GMT (envelope-from hselasky@FreeBSD.org) Message-Id: <201612261041.uBQAfqCs047025@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: hselasky set sender to hselasky@FreeBSD.org using -f From: Hans Petter Selasky Date: Mon, 26 Dec 2016 10:41:52 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r310589 - head/sys/compat/linuxkpi/common/include/linux X-SVN-Group: head 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: 2.1.23 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, 26 Dec 2016 10:41:53 -0000 Author: hselasky Date: Mon Dec 26 10:41:51 2016 New Revision: 310589 URL: https://svnweb.freebsd.org/changeset/base/310589 Log: Implement more list header file functions. Add definition guard for the list_head structure. Obtained from: kmacy @ MFC after: 1 week Sponsored by: Mellanox Technologies Modified: head/sys/compat/linuxkpi/common/include/linux/list.h Modified: head/sys/compat/linuxkpi/common/include/linux/list.h ============================================================================== --- head/sys/compat/linuxkpi/common/include/linux/list.h Mon Dec 26 10:24:48 2016 (r310588) +++ head/sys/compat/linuxkpi/common/include/linux/list.h Mon Dec 26 10:41:51 2016 (r310589) @@ -72,10 +72,18 @@ #define prefetch(x) +#define LINUX_LIST_HEAD_INIT(name) { &(name), &(name) } + +#define LINUX_LIST_HEAD(name) \ + struct list_head name = LINUX_LIST_HEAD_INIT(name) + +#ifndef LIST_HEAD_DEF +#define LIST_HEAD_DEF struct list_head { struct list_head *next; struct list_head *prev; }; +#endif static inline void INIT_LIST_HEAD(struct list_head *list) @@ -91,12 +99,26 @@ list_empty(const struct list_head *head) return (head->next == head); } +static inline int +list_empty_careful(const struct list_head *head) +{ + struct list_head *next = head->next; + + return ((next == head) && (next == head->prev)); +} + +static inline void +__list_del(struct list_head *prev, struct list_head *next) +{ + next->prev = prev; + WRITE_ONCE(prev->next, next); +} + static inline void list_del(struct list_head *entry) { - entry->next->prev = entry->prev; - entry->prev->next = entry->next; + __list_del(entry->prev, entry->next); } static inline void @@ -183,6 +205,11 @@ list_del_init(struct list_head *entry) for (p = list_entry((h)->prev, typeof(*p), field); &(p)->field != (h); \ p = list_entry((p)->field.prev, typeof(*p), field)) +#define list_for_each_entry_safe_reverse(p, n, h, field) \ + for (p = list_entry((h)->prev, typeof(*p), field), \ + n = list_entry((p)->field.prev, typeof(*p), field); &(p)->field != (h); \ + p = n, n = list_entry(n->field.prev, typeof(*n), field)) + #define list_for_each_entry_continue_reverse(p, h, field) \ for (p = list_entry((p)->field.prev, typeof(*p), field); &(p)->field != (h); \ p = list_entry((p)->field.prev, typeof(*p), field))