From patchwork Thu Jan 14 21:46:03 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mathieu Poirier X-Patchwork-Id: 8035881 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 367469F1C0 for ; Thu, 14 Jan 2016 21:51:29 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 5ADEE202EB for ; Thu, 14 Jan 2016 21:51:28 +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 967C920251 for ; Thu, 14 Jan 2016 21:51:27 +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 1aJpmL-0006NM-4a; Thu, 14 Jan 2016 21:50:01 +0000 Received: from mail-pf0-x236.google.com ([2607:f8b0:400e:c00::236]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1aJpjz-0004LY-Ui for linux-arm-kernel@lists.infradead.org; Thu, 14 Jan 2016 21:47:38 +0000 Received: by mail-pf0-x236.google.com with SMTP id 65so106065086pff.2 for ; Thu, 14 Jan 2016 13:47:15 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=Dsn8SzK0OCb77i52yAHbLZ+LjTO7f2Q/tr115O78yxQ=; b=TnotdFv//jp/SDo4ZKWIfpjNPHjqoU75KfXrME6K150Fx1wSnE9PHVYIbyAtv07ngh vtqa9sLrXDVw6gBJ9A0XlLj6rtWy8XXB2x8p6VUqIPrUUjNewsweq93gxlkM5jsUTCGD /DzmW5Ibwu8GSAI2HO2hx3lKk+Oaxx505ofZ4= 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=Dsn8SzK0OCb77i52yAHbLZ+LjTO7f2Q/tr115O78yxQ=; b=IRjuHOSK1lgadY9lyluF72LUhztKeFa2e6UugHYX1cHryjYrFeeQ2v3BAimJl8bdaq H3vKT7I47KVxIw7G3kRlDCi2jA3oNcz5IV6fd3eG9VinypBFkxRTuxIZ9BJKbjrMsli+ R9vs8Olev5HnrsGzEz1UHgkVht7mR793xg2Xrq/VzQL6zAcy8sqUSzxJ8Z3X4FW5Gb8k y75N1DzmlRl96+GN63kDYpckJI2WG5MM7pVcASzk1eRUvqXWIMEto7+l+g9ZRtJ655yy M2w4EMWH8xcv85UCoD0/akKrBT2GUyoPC8GdTHuoVI9hzqVp7z/VfxD+sk8sF/vOiIQQ eMhg== X-Gm-Message-State: ALoCoQmh6APe6Epne/f9honTPaQNjQu6wkH0f8fnXAErqtNsCexMyw0e1+FqlV0rljU4QC74UyfioXvj+q2bR032ZMywlprqDA== X-Received: by 10.98.80.135 with SMTP id g7mr9706269pfj.132.1452808035294; Thu, 14 Jan 2016 13:47:15 -0800 (PST) Received: from t430.cg.shawcable.net ([184.64.168.246]) by smtp.gmail.com with ESMTPSA id c87sm11383309pfj.41.2016.01.14.13.47.13 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 14 Jan 2016 13:47:14 -0800 (PST) From: Mathieu Poirier To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH V8 09/23] coresight: etm3x: set progbit to stop trace collection Date: Thu, 14 Jan 2016 14:46:03 -0700 Message-Id: <1452807977-8069-10-git-send-email-mathieu.poirier@linaro.org> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1452807977-8069-1-git-send-email-mathieu.poirier@linaro.org> References: <1452807977-8069-1-git-send-email-mathieu.poirier@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160114_134736_266034_EF7AABEB X-CRM114-Status: GOOD ( 10.11 ) X-Spam-Score: -2.7 (--) 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 , linux-doc@vger.kernel.org, zhang.chunyan@linaro.org, rabin@rab.in, mike.leach@arm.com, tor@ti.com 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,RP_MATCHES_RCVD,T_DKIM_INVALID,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 4db5147680f6..82d1557f4ecf 100644 --- a/drivers/hwtracing/coresight/coresight-etm3x.c +++ b/drivers/hwtracing/coresight/coresight-etm3x.c @@ -398,9 +398,6 @@ 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);