Received: by 2002:ad5:474a:0:0:0:0:0 with SMTP id i10csp3297315imu; Sun, 11 Nov 2018 11:50:12 -0800 (PST) X-Google-Smtp-Source: AJdET5cVYGf4omGlSuqIphuV2S1kQFX+f/nizDi8a1VCD6TCecbU2Vhuud3pjyCZWcWxPrg4DPpR X-Received: by 2002:a63:955a:: with SMTP id t26mr15138171pgn.449.1541965812852; Sun, 11 Nov 2018 11:50:12 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1541965812; cv=none; d=google.com; s=arc-20160816; b=fkBoqdv2MHxn/51nqauY1p0Cmw/TgFi0aun76eYDrFFm55HqsecQIBE1LDGl9Psd5e fuwec/2mfr9uoDdVk9yTtzSKVcRTlNNhd29AOvwKsYhpVpPjdCFLuJCVe3u3IkXBe7D3 7m7xyhQ9nZqVorlATSl5/YYEkThBn9ufzNS4tL+XvEfz7F5JGmpOKd92BjWmU4LdTG0v /mhtYrepf5lLx0WYV13LiZAI+HWhTQoDTKLzXVOH91HNqTr5vJ6CmVjSXxEkCi2cbAwX VJPtfOlZTEQNuzuzcSsAOFF0jTQEmCztclybfOGt7+oRxcwybnfD1G4jlk4kV07/00SF HAHg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:message-id:references:in-reply-to:date :subject:cc:to:from; bh=/f2Dn9QsmvZZzwSgXOXhjcRpW+Xmsaz1Ul3YXlJzw9Q=; b=iS7lOfwn/8W/T87Rbo4iCqhBVhPb/nLZz5EOS7CbY4zmgl0PES1zMPa0xCLvFt1MfW l0PYr6U6ikLHhL2bd5I4ZQN8W1FFH/+wZM1sgOjrY4tGnbdqSZU90hCnpwlsuq4Ivc9i s6FYe1gSwuIjad7Q3hxNvgBff0jLcU6bHvw76juiQI6pnxXnLFA6FoHmM4aRKowKORKf cfSkk/7Q8yRgSvET2lZaNbTH1+5QjfleJpKsX7Ui4KN/0AOqJFFF+/PhRIprl0/mlqW5 Zbc9vTmaMrKyzLQAHjBtLguCqa5+u4pLOan3SbnhfZqxrBeRqjN6m9RdwA977aCgDjYD lVTw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=ibm.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id l12-v6si16164539plc.54.2018.11.11.11.49.57; Sun, 11 Nov 2018 11:50:12 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=ibm.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727000AbeKLFdq (ORCPT + 99 others); Mon, 12 Nov 2018 00:33:46 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:44650 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726344AbeKLFdp (ORCPT ); Mon, 12 Nov 2018 00:33:45 -0500 Received: from pps.filterd (m0098414.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id wABJi8Y4036559 for ; Sun, 11 Nov 2018 14:44:19 -0500 Received: from e15.ny.us.ibm.com (e15.ny.us.ibm.com [129.33.205.205]) by mx0b-001b2d01.pphosted.com with ESMTP id 2npdbnsp5t-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Sun, 11 Nov 2018 14:44:18 -0500 Received: from localhost by e15.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Sun, 11 Nov 2018 19:44:17 -0000 Received: from b01cxnp22036.gho.pok.ibm.com (9.57.198.26) by e15.ny.us.ibm.com (146.89.104.202) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Sun, 11 Nov 2018 19:44:13 -0000 Received: from b01ledav003.gho.pok.ibm.com (b01ledav003.gho.pok.ibm.com [9.57.199.108]) by b01cxnp22036.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id wABJiBVK36044844 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Sun, 11 Nov 2018 19:44:12 GMT Received: from b01ledav003.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id DCF7EB2071; Sun, 11 Nov 2018 19:44:11 +0000 (GMT) Received: from b01ledav003.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id BAA3BB205F; Sun, 11 Nov 2018 19:44:11 +0000 (GMT) Received: from paulmck-ThinkPad-W541 (unknown [9.85.207.24]) by b01ledav003.gho.pok.ibm.com (Postfix) with ESMTP; Sun, 11 Nov 2018 19:44:11 +0000 (GMT) Received: by paulmck-ThinkPad-W541 (Postfix, from userid 1000) id 8FBB116C5D7F; Sun, 11 Nov 2018 11:44:12 -0800 (PST) From: "Paul E. McKenney" To: linux-kernel@vger.kernel.org Cc: mingo@kernel.org, jiangshanlai@gmail.com, dipankar@in.ibm.com, akpm@linux-foundation.org, mathieu.desnoyers@efficios.com, josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com, fweisbec@gmail.com, oleg@redhat.com, joel@joelfernandes.org, "Paul E. McKenney" , Robert Richter , "David S. Miller" , oprofile-list@lists.sf.net, sparclinux@vger.kernel.org Subject: [PATCH tip/core/rcu 06/41] sparc/oprofile: Convert timer_stop() to use synchronize_rcu() Date: Sun, 11 Nov 2018 11:43:35 -0800 X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181111194104.GA4787@linux.ibm.com> References: <20181111194104.GA4787@linux.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 18111119-0068-0000-0000-0000035E482B X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00010028; HX=3.00000242; KW=3.00000007; PH=3.00000004; SC=3.00000270; SDB=6.01116019; UDB=6.00578732; IPR=6.00896120; MB=3.00024114; MTD=3.00000008; XFM=3.00000015; UTC=2018-11-11 19:44:17 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18111119-0069-0000-0000-000046644C66 Message-Id: <20181111194410.6368-6-paulmck@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-11-11_13:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1807170000 definitions=main-1811110188 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Now that synchronize_rcu() waits for preempt-disable regions of code in addition to explicitly marked RCU read-side critical sections, synchronize_rcu() can be used in place of synchronize_sched(). This commit therefore makes that change. Signed-off-by: Paul E. McKenney Cc: Robert Richter Cc: "David S. Miller" Cc: Cc: --- arch/sparc/oprofile/init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/sparc/oprofile/init.c b/arch/sparc/oprofile/init.c index f9024bccff16..43730c9b1c86 100644 --- a/arch/sparc/oprofile/init.c +++ b/arch/sparc/oprofile/init.c @@ -53,7 +53,7 @@ static void timer_stop(void) { nmi_adjust_hz(1); unregister_die_notifier(&profile_timer_exceptions_nb); - synchronize_sched(); /* Allow already-started NMIs to complete. */ + synchronize_rcu(); /* Allow already-started NMIs to complete. */ } static int op_nmi_timer_init(struct oprofile_operations *ops) -- 2.17.1