From patchwork Mon Nov 21 07:57:22 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chunyan Zhang X-Patchwork-Id: 83193 Delivered-To: patch@linaro.org Received: by 10.140.97.165 with SMTP id m34csp1369058qge; Mon, 21 Nov 2016 00:10:18 -0800 (PST) X-Received: by 10.129.160.18 with SMTP id x18mr11960683ywg.82.1479715818648; Mon, 21 Nov 2016 00:10:18 -0800 (PST) Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id z29si4414032ybi.215.2016.11.21.00.10.18; Mon, 21 Nov 2016 00:10:18 -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; dkim=pass header.i=@linaro.org; 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=pass (p=NONE dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753487AbcKUIKI (ORCPT + 26 others); Mon, 21 Nov 2016 03:10:08 -0500 Received: from mail-pg0-f47.google.com ([74.125.83.47]:36234 "EHLO mail-pg0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752731AbcKUIKG (ORCPT ); Mon, 21 Nov 2016 03:10:06 -0500 Received: by mail-pg0-f47.google.com with SMTP id f188so127762960pgc.3 for ; Mon, 21 Nov 2016 00:10:06 -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=soOjTmettxVnMbX4LkmbK63yDNRtjDyQy264TMJsO5Q=; b=Fb16Pz9LGhDO+KuPp3yYU72Yk6N21a3skZEuuiFO3fdXQI7PeQ9GaQJLXdWq+3Z9ID Bg7xB3cUstyCK/XNHQp8MmD1rLZrgTDpgkRMLJGPUUua8kdDjorVIeIfoU4QgkgtQ+Cb NEox37DpFJbRxtAbGyB7MTM3qWrAtr8Lp9Vig= 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=soOjTmettxVnMbX4LkmbK63yDNRtjDyQy264TMJsO5Q=; b=BS0SriL2VZHiC1iciTPWc1RRh4sT4WzlS/rGh3OwB01i7Y8bXZ4CYEEe+r9UqTmj8r CYkwkwNTmwJW/lFdVsC/78cHCcrgxY+svqA8OcYxsZjrqIKPS5AffRYMsIO60kO890Ps OTjpHEsJ1GUOorsC1mFUqoE1ert5nTa4cgLv8fWgXPDEjDdFaQaNF1VjjY0mB+7WdR2I yHV+3s9oGeHHAmzMGTtT+cD10a/+/JH53+LCmamIW5j1RkxDFLBK/WehVWLLXrbN52cN WVBd4Jt+4zEUYW7XlP/66hPIoan5CfFL1nJO5Y3vwT0ky3ANRjuxQsoQ5rwqhDNPeRNg qJCg== X-Gm-Message-State: AKaTC03TIth9xBset9KRCZunTUIIYkmq3E8ECHL1J6yZLNE3QMuqcxYQ1U5CYld6aG1YWtUK X-Received: by 10.98.7.83 with SMTP id b80mr16364420pfd.79.1479715805558; Mon, 21 Nov 2016 00:10:05 -0800 (PST) Received: from localhost.localdomain ([175.111.195.49]) by smtp.gmail.com with ESMTPSA id s2sm35183093pfi.10.2016.11.21.00.09.59 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 21 Nov 2016 00:10:05 -0800 (PST) From: Chunyan Zhang To: rostedt@goodmis.org, mathieu.poirier@linaro.org, alexander.shishkin@linux.intel.com, mingo@redhat.com Cc: mike.leach@arm.com, tor@ti.com, philippe.langlais@st.com, nicolas.guion@st.com, felipe.balbi@linux.intel.com, zhang.lyra@gmail.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH V9 5/6] stm dummy: Mark dummy_stm_packet() with notrace Date: Mon, 21 Nov 2016 15:57:22 +0800 Message-Id: <1479715043-6534-6-git-send-email-zhang.chunyan@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1479715043-6534-1-git-send-email-zhang.chunyan@linaro.org> References: <1479715043-6534-1-git-send-email-zhang.chunyan@linaro.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org If CONFIG_STM_SOURCE_FTRACE is selected, Function trace data can be writen to sink via STM, all functions that related to writing data packets to STM should be marked 'notrace' to avoid being traced by Ftrace, otherwise the program would stall into an endless loop. Signed-off-by: Chunyan Zhang Acked-by: Alexander Shishkin --- drivers/hwtracing/stm/dummy_stm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- 2.7.4 diff --git a/drivers/hwtracing/stm/dummy_stm.c b/drivers/hwtracing/stm/dummy_stm.c index a86612d..c5f94ca 100644 --- a/drivers/hwtracing/stm/dummy_stm.c +++ b/drivers/hwtracing/stm/dummy_stm.c @@ -21,7 +21,7 @@ #include #include -static ssize_t +static ssize_t notrace dummy_stm_packet(struct stm_data *stm_data, unsigned int master, unsigned int channel, unsigned int packet, unsigned int flags, unsigned int size, const unsigned char *payload)