From patchwork Wed Sep 16 14:23:21 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jisheng Zhang X-Patchwork-Id: 7195821 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 22C40BEEC1 for ; Wed, 16 Sep 2015 14:41:17 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 5444C20825 for ; Wed, 16 Sep 2015 14:41:16 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D84AD206CC for ; Wed, 16 Sep 2015 14:41:14 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZcDs1-0002T7-Kr; Wed, 16 Sep 2015 14:39:37 +0000 Received: from mx0a-0016f401.pphosted.com ([67.231.148.174]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZcDgA-0006HZ-4u for linux-arm-kernel@lists.infradead.org; Wed, 16 Sep 2015 14:27:29 +0000 Received: from pps.filterd (m0045849.ppops.net [127.0.0.1]) by mx0a-0016f401.pphosted.com (8.15.0.59/8.15.0.59) with SMTP id t8GEEp7V007229; Wed, 16 Sep 2015 07:26:55 -0700 Received: from sc-exch02.marvell.com ([199.233.58.182]) by mx0a-0016f401.pphosted.com with ESMTP id 1wy3qp93n9-1 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Wed, 16 Sep 2015 07:26:55 -0700 Received: from SC-EXCH03.marvell.com (10.93.176.83) by SC-EXCH02.marvell.com (10.93.176.82) with Microsoft SMTP Server (TLS) id 15.0.1044.25; Wed, 16 Sep 2015 07:26:54 -0700 Received: from maili.marvell.com (10.93.176.43) by SC-EXCH03.marvell.com (10.93.176.83) with Microsoft SMTP Server id 15.0.1044.25 via Frontend Transport; Wed, 16 Sep 2015 07:26:54 -0700 Received: from xhacker.marvell.com (unknown [10.37.135.134]) by maili.marvell.com (Postfix) with ESMTP id BCA9E3F703F; Wed, 16 Sep 2015 07:26:53 -0700 (PDT) From: Jisheng Zhang To: , Subject: [PATCH] arm64: add cpu_idle tracepoints to arch_cpu_idle Date: Wed, 16 Sep 2015 22:23:21 +0800 Message-ID: <1442413401-2955-1-git-send-email-jszhang@marvell.com> X-Mailer: git-send-email 2.5.1 MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2015-09-16_03:, , signatures=0 X-Proofpoint-Spam-Details: rule=inbound_notspam policy=inbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1507310000 definitions=main-1509160191 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150916_072723_187255_3D152165 X-CRM114-Status: UNSURE ( 9.18 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.6 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jisheng Zhang , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Currently, if cpuidle is disabled or not supported, powertop reports zero wakeups and zero events. This is due to the cpu_idle tracepoints are missing. This patch is to make cpu_idle tracepoints always available even if cpuidle is disabled or not supported. Signed-off-by: Jisheng Zhang Acked-by: Lorenzo Pieralisi --- arch/arm64/kernel/process.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c index 223b093..f75b540 100644 --- a/arch/arm64/kernel/process.c +++ b/arch/arm64/kernel/process.c @@ -44,6 +44,7 @@ #include #include #include +#include #include #include @@ -75,8 +76,10 @@ void arch_cpu_idle(void) * This should do all the clock switching and wait for interrupt * tricks */ + trace_cpu_idle_rcuidle(1, smp_processor_id()); cpu_do_idle(); local_irq_enable(); + trace_cpu_idle_rcuidle(PWR_EVENT_EXIT, smp_processor_id()); } #ifdef CONFIG_HOTPLUG_CPU