From patchwork Wed Oct 25 05:11:10 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Byungchul Park X-Patchwork-Id: 10025867 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 0181D6032C for ; Wed, 25 Oct 2017 05:12:38 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E9AD728AC0 for ; Wed, 25 Oct 2017 05:12:37 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DE6C128AD9; Wed, 25 Oct 2017 05:12:37 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9709128AC0 for ; Wed, 25 Oct 2017 05:12:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752077AbdJYFMe (ORCPT ); Wed, 25 Oct 2017 01:12:34 -0400 Received: from LGEAMRELO13.lge.com ([156.147.23.53]:58436 "EHLO lgeamrelo13.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751947AbdJYFLk (ORCPT ); Wed, 25 Oct 2017 01:11:40 -0400 Received: from unknown (HELO lgemrelse6q.lge.com) (156.147.1.121) by 156.147.23.53 with ESMTP; 25 Oct 2017 14:11:38 +0900 X-Original-SENDERIP: 156.147.1.121 X-Original-MAILFROM: byungchul.park@lge.com Received: from unknown (HELO localhost.localdomain) (10.177.222.33) by 156.147.1.121 with ESMTP; 25 Oct 2017 14:11:38 +0900 X-Original-SENDERIP: 10.177.222.33 X-Original-MAILFROM: byungchul.park@lge.com From: Byungchul Park To: peterz@infradead.org, mingo@kernel.org, axboe@kernel.dk Cc: johan@kernel.org, tglx@linutronix.de, linux-kernel@vger.kernel.org, linux-mm@kvack.org, tj@kernel.org, johannes.berg@intel.com, oleg@redhat.com, amir73il@gmail.com, david@fromorbit.com, darrick.wong@oracle.com, linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org, hch@infradead.org, idryomov@gmail.com, kernel-team@lge.com Subject: [PATCH v4 5/7] completion: Add support for initializing completion with lockdep_map Date: Wed, 25 Oct 2017 14:11:10 +0900 Message-Id: <1508908272-15757-6-git-send-email-byungchul.park@lge.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1508908272-15757-1-git-send-email-byungchul.park@lge.com> References: <1508908272-15757-1-git-send-email-byungchul.park@lge.com> Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Sometimes, we want to initialize completions with sparate lockdep maps to assign lock classes as desired. For example, the workqueue code needs to directly manage lockdep maps, since only the code is aware of how to classify lockdep maps properly. Provide additional macros initializing completions in that way. Signed-off-by: Byungchul Park --- include/linux/completion.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/include/linux/completion.h b/include/linux/completion.h index cae5400..02f8cde 100644 --- a/include/linux/completion.h +++ b/include/linux/completion.h @@ -49,6 +49,13 @@ static inline void complete_release_commit(struct completion *x) lock_commit_crosslock((struct lockdep_map *)&x->map); } +#define init_completion_map(x, m) \ +do { \ + lockdep_init_map_crosslock((struct lockdep_map *)&(x)->map, \ + (m)->name, (m)->key, 0); \ + __init_completion(x); \ +} while (0) + #define init_completion(x) \ do { \ static struct lock_class_key __key; \ @@ -58,6 +65,7 @@ static inline void complete_release_commit(struct completion *x) __init_completion(x); \ } while (0) #else +#define init_completion_map(x, m) __init_completion(x) #define init_completion(x) __init_completion(x) static inline void complete_acquire(struct completion *x) {} static inline void complete_release(struct completion *x) {} @@ -73,6 +81,9 @@ static inline void complete_release_commit(struct completion *x) {} { 0, __WAIT_QUEUE_HEAD_INITIALIZER((work).wait) } #endif +#define COMPLETION_INITIALIZER_ONSTACK_MAP(work, map) \ + (*({ init_completion_map(&(work), &(map)); &(work); })) + #define COMPLETION_INITIALIZER_ONSTACK(work) \ (*({ init_completion(&work); &work; })) @@ -102,8 +113,11 @@ static inline void complete_release_commit(struct completion *x) {} #ifdef CONFIG_LOCKDEP # define DECLARE_COMPLETION_ONSTACK(work) \ struct completion work = COMPLETION_INITIALIZER_ONSTACK(work) +# define DECLARE_COMPLETION_ONSTACK_MAP(work, map) \ + struct completion work = COMPLETION_INITIALIZER_ONSTACK_MAP(work, map) #else # define DECLARE_COMPLETION_ONSTACK(work) DECLARE_COMPLETION(work) +# define DECLARE_COMPLETION_ONSTACK_MAP(work, map) DECLARE_COMPLETION(work) #endif /**