From patchwork Mon Nov 30 02:14:31 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mathieu Poirier X-Patchwork-Id: 7720291 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 E5395BEEE1 for ; Mon, 30 Nov 2015 02:21:19 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 1701C20529 for ; Mon, 30 Nov 2015 02:21:19 +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 3473F20528 for ; Mon, 30 Nov 2015 02:21:18 +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 1a3E42-0007JD-8l; Mon, 30 Nov 2015 02:19:38 +0000 Received: from mail-pa0-x230.google.com ([2607:f8b0:400e:c03::230]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1a3E1c-0005YL-3P for linux-arm-kernel@lists.infradead.org; Mon, 30 Nov 2015 02:17:09 +0000 Received: by pacej9 with SMTP id ej9so167977721pac.2 for ; Sun, 29 Nov 2015 18:16:47 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro-org.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=UWNUfpHDGNxYJENcuq7Aa72/q5B700HT4jBgOJXqv4w=; b=WXbj0e7rYliDcapLHIBOF6OQfb62ybluBp+leuq4r5mWhdlYjHi2zCeQtUv79yPJDr QmEwg6zzJQq+yMfFF4/JiJ9NHZi0v/3Eev0lVz2Q6vYHuaPt98w7Zx3ndqCXOs/wIcCV 9DJO+sR8EPJBBiuS7t09qZ3Mc6Fz10StDBsdRNaj8uVFMpUQMWUILITjBj4CcUM4Louy RgtU2o3KEAjkPNmUWr31O+nRoyzabfA9lidS0UaIBEizPTfLlDv7wZS+T0h3uE2cPSC1 Ot6XzXj6CJJd72K/57AhoFzECOpTclJw6VOClRmGw703GEtRBH7h2JabJCDS5bYnFnyI Uy4g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=UWNUfpHDGNxYJENcuq7Aa72/q5B700HT4jBgOJXqv4w=; b=KU2EmY/0U/5HIUV8DnJjk7w35UjBhJsWzzYNlZDPNAyUQAJXRQHH0WIZChflS9/A7p +5921JF0aujmt7F16oW3ZW64zz6PVsjhvZBxeIQOdqTrZ3UXGb3NDAlqimdITP2Mnq/Y mJA9j4pi6JFL2/Ixxx68MgUdfePsrcYwK4o+mAqIL0zzd8sIFqrE2bG1Y8liKtW4yE4D P3jKE1QABr0NLseKYxch6Olp4grNjLp5A291YTcR6LOz5l3IszEj/pu+Yfaban2mXZla MSfu7GSbZO+v5tl1GGeOQIzMHTf7v9QgzjgK8ZqwmOD+A6v0vcVWMNzudVN2tUs7wVXc yW0Q== X-Gm-Message-State: ALoCoQk+j+fHY+behMgHeDeXhVINMlg1PP9QMrTjpdnhnyynwA8rgVef56OkqpkIGhXOZZMCf9Y9 X-Received: by 10.66.237.102 with SMTP id vb6mr8438585pac.133.1448849807221; Sun, 29 Nov 2015 18:16:47 -0800 (PST) Received: from t430.cg.shawcable.net ([184.64.168.246]) by smtp.gmail.com with ESMTPSA id n16sm47168818pfa.53.2015.11.29.18.16.45 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Sun, 29 Nov 2015 18:16:46 -0800 (PST) From: Mathieu Poirier To: gregkh@linuxfoundation.org, alexander.shishkin@linux.intel.com Subject: [PATCH V5 10/26] coresight: etm3x: set progbit to stop trace collection Date: Sun, 29 Nov 2015 19:14:31 -0700 Message-Id: <1448849687-5724-11-git-send-email-mathieu.poirier@linaro.org> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1448849687-5724-1-git-send-email-mathieu.poirier@linaro.org> References: <1448849687-5724-1-git-send-email-mathieu.poirier@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20151129_181708_323193_6BE43E6A X-CRM114-Status: GOOD ( 11.66 ) 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: al.grant@arm.com, Mathieu Poirier , pawel.moll@arm.com, linux-doc@vger.kernel.org, fainelli@broadcom.com, linux-kernel@vger.kernel.org, tor@ti.com, mike.leach@arm.com, zhang.chunyan@linaro.org, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED, T_DKIM_INVALID, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham 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 There is no need to use the event enable's "always false" event to stop trace collection. For that purpose setting the programming bit (ETMCR:10) is enough. Signed-off-by: Mathieu Poirier --- drivers/hwtracing/coresight/coresight-etm3x.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-etm3x.c b/drivers/hwtracing/coresight/coresight-etm3x.c index 0035953a1102..a0252ffb4ba7 100644 --- a/drivers/hwtracing/coresight/coresight-etm3x.c +++ b/drivers/hwtracing/coresight/coresight-etm3x.c @@ -422,9 +422,6 @@ static void etm_disable_hw(void *info) CS_UNLOCK(drvdata->base); etm_set_prog(drvdata); - /* Program trace enable to low by using always false event */ - etm_writel(drvdata, ETM_HARD_WIRE_RES_A | ETM_EVENT_NOT_A, ETMTEEVR); - /* Read back sequencer and counters for post trace analysis */ config->seq_curr_state = (etm_readl(drvdata, ETMSQR) & ETM_SQR_MASK);