From patchwork Sat Feb 4 01:44:54 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: 6615 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 1768823E92 for ; Sat, 4 Feb 2012 01:45:48 +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 D460FA180C7 for ; Sat, 4 Feb 2012 01:45:47 +0000 (UTC) Received: by mail-iy0-f180.google.com with SMTP id z7so7596767iab.11 for ; Fri, 03 Feb 2012 17:45:47 -0800 (PST) Received: by 10.42.177.133 with SMTP id bi5mr10589101icb.40.1328319947651; Fri, 03 Feb 2012 17:45:47 -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 a18cs33796ibz; Fri, 3 Feb 2012 17:45:47 -0800 (PST) Received: by 10.68.73.103 with SMTP id k7mr21737623pbv.132.1328319944007; Fri, 03 Feb 2012 17:45:44 -0800 (PST) Received: from e38.co.us.ibm.com (e38.co.us.ibm.com. [32.97.110.159]) by mx.google.com with ESMTPS id p7si10772752pbk.129.2012.02.03.17.45.43 (version=TLSv1/SSLv3 cipher=OTHER); Fri, 03 Feb 2012 17:45:44 -0800 (PST) Received-SPF: pass (google.com: domain of paulmck@linux.vnet.ibm.com designates 32.97.110.159 as permitted sender) client-ip=32.97.110.159; Authentication-Results: mx.google.com; spf=pass (google.com: domain of paulmck@linux.vnet.ibm.com designates 32.97.110.159 as permitted sender) smtp.mail=paulmck@linux.vnet.ibm.com Received: from /spool/local by e38.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Fri, 3 Feb 2012 18:45:42 -0700 Received: from d03dlp02.boulder.ibm.com (9.17.202.178) by e38.co.us.ibm.com (192.168.1.138) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Fri, 3 Feb 2012 18:45:39 -0700 Received: from d03relay02.boulder.ibm.com (d03relay02.boulder.ibm.com [9.17.195.227]) by d03dlp02.boulder.ibm.com (Postfix) with ESMTP id 23D503E40036 for ; Fri, 3 Feb 2012 18:45:38 -0700 (MST) Received: from d03av01.boulder.ibm.com (d03av01.boulder.ibm.com [9.17.195.167]) by d03relay02.boulder.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id q141ja7G127768 for ; Fri, 3 Feb 2012 18:45:37 -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 q141jQUk013290 for ; Fri, 3 Feb 2012 18:45:36 -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 q141jQpp013237; Fri, 3 Feb 2012 18:45:26 -0700 Received: by paulmck-ThinkPad-W500 (Postfix, from userid 1000) id D8CBCE51FA; Fri, 3 Feb 2012 17:45:25 -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 19/47] rcu: Streamline code produced by __rcu_read_unlock() Date: Fri, 3 Feb 2012 17:44:54 -0800 Message-Id: <1328319922-30828-19-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: 12020401-5518-0000-0000-000001FD8AB7 From: "Paul E. McKenney" This is a port of commit #be0e1e21 to TINY_PREEMPT_RCU. This uses noinline to prevent rcu_read_unlock_special() from being inlined into __rcu_read_unlock(). Signed-off-by: Paul E. McKenney --- kernel/rcutiny_plugin.h | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/kernel/rcutiny_plugin.h b/kernel/rcutiny_plugin.h index 432ed2b..b58a320 100644 --- a/kernel/rcutiny_plugin.h +++ b/kernel/rcutiny_plugin.h @@ -544,7 +544,7 @@ EXPORT_SYMBOL_GPL(__rcu_read_lock); * notify RCU core processing or task having blocked during the RCU * read-side critical section. */ -static void rcu_read_unlock_special(struct task_struct *t) +static noinline void rcu_read_unlock_special(struct task_struct *t) { int empty; int empty_exp;