From patchwork Sat Feb 4 01:45:19 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Paul E. McKenney" X-Patchwork-Id: 6628 Return-Path: X-Original-To: patchwork@peony.canonical.com Delivered-To: patchwork@peony.canonical.com Received: from fiordland.canonical.com (fiordland.canonical.com [91.189.94.145]) by peony.canonical.com (Postfix) with ESMTP id 433DC23E92 for ; Sat, 4 Feb 2012 01:46:01 +0000 (UTC) Received: from mail-iy0-f180.google.com (mail-iy0-f180.google.com [209.85.210.180]) by fiordland.canonical.com (Postfix) with ESMTP id 0C90AA180C7 for ; Sat, 4 Feb 2012 01:46:00 +0000 (UTC) Received: by mail-iy0-f180.google.com with SMTP id z7so7596471iab.11 for ; Fri, 03 Feb 2012 17:46:00 -0800 (PST) Received: by 10.42.177.133 with SMTP id bi5mr10589666icb.40.1328319960831; Fri, 03 Feb 2012 17:46:00 -0800 (PST) X-Forwarded-To: linaro-patchwork@canonical.com X-Forwarded-For: patch@linaro.org linaro-patchwork@canonical.com Delivered-To: patches@linaro.org Received: by 10.231.169.210 with SMTP id a18cs33815ibz; Fri, 3 Feb 2012 17:46:00 -0800 (PST) Received: by 10.68.218.106 with SMTP id pf10mr22678994pbc.81.1328319958788; Fri, 03 Feb 2012 17:45:58 -0800 (PST) Received: from e39.co.us.ibm.com (e39.co.us.ibm.com. [32.97.110.160]) by mx.google.com with ESMTPS id l5si10772660pbd.133.2012.02.03.17.45.58 (version=TLSv1/SSLv3 cipher=OTHER); Fri, 03 Feb 2012 17:45:58 -0800 (PST) Received-SPF: pass (google.com: domain of paulmck@linux.vnet.ibm.com designates 32.97.110.160 as permitted sender) client-ip=32.97.110.160; Authentication-Results: mx.google.com; spf=pass (google.com: domain of paulmck@linux.vnet.ibm.com designates 32.97.110.160 as permitted sender) smtp.mail=paulmck@linux.vnet.ibm.com Received: from /spool/local by e39.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Fri, 3 Feb 2012 18:45:57 -0700 Received: from d03dlp03.boulder.ibm.com (9.17.202.179) by e39.co.us.ibm.com (192.168.1.139) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Fri, 3 Feb 2012 18:45:56 -0700 Received: from d03relay04.boulder.ibm.com (d03relay04.boulder.ibm.com [9.17.195.106]) by d03dlp03.boulder.ibm.com (Postfix) with ESMTP id 4B29019D8067 for ; Fri, 3 Feb 2012 18:45:52 -0700 (MST) Received: from d03av01.boulder.ibm.com (d03av01.boulder.ibm.com [9.17.195.167]) by d03relay04.boulder.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id q141jf8E054720 for ; Fri, 3 Feb 2012 18:45:42 -0700 Received: from d03av01.boulder.ibm.com (loopback [127.0.0.1]) by d03av01.boulder.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id q141jWOs014174 for ; Fri, 3 Feb 2012 18:45:40 -0700 Received: from paulmck-ThinkPad-W500 ([9.47.24.98]) by d03av01.boulder.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id q141jS6u013404; Fri, 3 Feb 2012 18:45:28 -0700 Received: by paulmck-ThinkPad-W500 (Postfix, from userid 1000) id 88414E5214; Fri, 3 Feb 2012 17:45:27 -0800 (PST) From: "Paul E. McKenney" To: linux-kernel@vger.kernel.org Cc: mingo@elte.hu, laijs@cn.fujitsu.com, dipankar@in.ibm.com, akpm@linux-foundation.org, mathieu.desnoyers@polymtl.ca, josh@joshtriplett.org, niv@us.ibm.com, tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org, Valdis.Kletnieks@vt.edu, dhowells@redhat.com, eric.dumazet@gmail.com, darren@dvhart.com, fweisbec@gmail.com, patches@linaro.org, "Paul E. McKenney" Subject: [PATCH tip/core/rcu 44/47] rcu: Remove redundant check for rcu_head misalignment Date: Fri, 3 Feb 2012 17:45:19 -0800 Message-Id: <1328319922-30828-44-git-send-email-paulmck@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.8 In-Reply-To: <1328319922-30828-1-git-send-email-paulmck@linux.vnet.ibm.com> References: <20120204014452.GA29811@linux.vnet.ibm.com> <1328319922-30828-1-git-send-email-paulmck@linux.vnet.ibm.com> X-Content-Scanned: Fidelis XPS MAILER x-cbid: 12020401-4242-0000-0000-000000AEC5C1 From: "Paul E. McKenney" There is now an unconditional check for rcu_head misalignment in __call_rcu(), so remove the old conditional one in debug_rcu_head_queue(). Reported-by: Josh Triplett Signed-off-by: Paul E. McKenney --- kernel/rcu.h | 1 - 1 files changed, 0 insertions(+), 1 deletions(-) diff --git a/kernel/rcu.h b/kernel/rcu.h index a074b0b..30876f4 100644 --- a/kernel/rcu.h +++ b/kernel/rcu.h @@ -50,7 +50,6 @@ extern struct debug_obj_descr rcuhead_debug_descr; static inline void debug_rcu_head_queue(struct rcu_head *head) { - WARN_ON_ONCE((unsigned long)head & 0x3); debug_object_activate(head, &rcuhead_debug_descr); debug_object_active_state(head, &rcuhead_debug_descr, STATE_RCU_HEAD_READY,