From patchwork Sun Oct 18 18:24:22 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mathieu Poirier X-Patchwork-Id: 7431711 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id D57BE9F36A for ; Sun, 18 Oct 2015 18:28:10 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id ED3ED204E7 for ; Sun, 18 Oct 2015 18:28:05 +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 13ED42061B for ; Sun, 18 Oct 2015 18:28:05 +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 1ZnsfJ-0005KZ-Li; Sun, 18 Oct 2015 18:26:41 +0000 Received: from mail-pa0-f49.google.com ([209.85.220.49]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1Znsec-0004kV-4V for linux-arm-kernel@lists.infradead.org; Sun, 18 Oct 2015 18:25:59 +0000 Received: by pacfv9 with SMTP id fv9so70829221pac.3 for ; Sun, 18 Oct 2015 11:25:37 -0700 (PDT) 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=l19MGTe3MpqZ7A1E3te4fGKeuoy1vMi7uQsFW8kucYo=; b=eoA6n7WyJZWZ/dUPZ2ybML1pq3dGLL1YSC8XjebWyyI0LTvCMiDgjQ3qp/W4BZg7EP IG6aK0zkQQYiWnU3yv4n1TAJfoLrgS/VcWgcO9l2oSDXremwkB2VaoFymmlVCeP5AZlc SBxhMjrEwdYXpceMReDrYdvLOIYzYVHZQ8QlqPXyuximDC3SqfA/vevgPhmxUTTeqXCI SbPOa7X3gA4zUzEIryurhLctHGT3h2TpFl5ZwpSiXAlM2UJHsBQL2e+DvaHEM1E5+cxk FaKrrkVx6ExlYjNIPqngOGtd55ZwiRP5svIJBKsXKHWaP1lY5RHRbDNP63b2QWM0AMay sGrg== X-Gm-Message-State: ALoCoQm2nLMHiNA8mEwbvJ0QaRlEWg4M31ju+M3azwKmxmoaGmdULB2LKilWEIBGAbBnJKyhs6h4 X-Received: by 10.68.239.165 with SMTP id vt5mr29403592pbc.15.1445192737339; Sun, 18 Oct 2015 11:25:37 -0700 (PDT) Received: from t430.cg.shawcable.net (S0106002369de4dac.cg.shawcable.net. [184.64.168.246]) by smtp.gmail.com with ESMTPSA id hq1sm20402076pbb.43.2015.10.18.11.25.35 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Sun, 18 Oct 2015 11:25:36 -0700 (PDT) From: Mathieu Poirier To: gregkh@linuxfoundation.org, a.p.zijlstra@chello.nl, alexander.shishkin@linux.intel.com, acme@kernel.org, mingo@redhat.com, corbet@lwn.net, nicolas.pitre@linaro.org Subject: [PATCH V2 05/30] coresight: etm3x: set progbit to stop trace collection Date: Sun, 18 Oct 2015 12:24:22 -0600 Message-Id: <1445192687-24112-6-git-send-email-mathieu.poirier@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1445192687-24112-1-git-send-email-mathieu.poirier@linaro.org> References: <1445192687-24112-1-git-send-email-mathieu.poirier@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20151018_112558_258122_0463154D X-CRM114-Status: GOOD ( 11.07 ) 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@linaro.org, pawel.moll@arm.com, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, adrian.hunter@intel.com, 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=-4.2 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 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 966955f5b0f9..713ffe1b761f 100644 --- a/drivers/hwtracing/coresight/coresight-etm3x.c +++ b/drivers/hwtracing/coresight/coresight-etm3x.c @@ -391,9 +391,6 @@ 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);