From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 47AB3C433E7 for ; Thu, 3 Sep 2020 00:18:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 21A4520758 for ; Thu, 3 Sep 2020 00:18:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="AEr3y3IQ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727889AbgICASU (ORCPT ); Wed, 2 Sep 2020 20:18:20 -0400 Received: from mail29.static.mailgun.info ([104.130.122.29]:33955 "EHLO mail29.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727842AbgICASP (ORCPT ); Wed, 2 Sep 2020 20:18:15 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1599092295; h=Content-Transfer-Encoding: MIME-Version: Message-Id: Date: Subject: Cc: To: From: Sender; bh=DWvh/xe4da4kqEIchXLMEtV/mjQkWQ1/j/n7f+uAWvc=; b=AEr3y3IQngtojQD/9sKeDblRfRCDqcEZlaIyUGT0yCirQWTscMT4S/Qx18ZLz2dQumTnFU6M NSiEBzfXWbI/hdUpdBpYnYc9qwRpedHR+vMXIRbP6pQgxLkNVlQF+0UM2Z2vAaNwEjJL6nWj eyveaPbuPhlUhcGVApKh/gmgvkU= X-Mailgun-Sending-Ip: 104.130.122.29 X-Mailgun-Sid: WyI0MWYwYSIsICJsaW51eC1rZXJuZWxAdmdlci5rZXJuZWwub3JnIiwgImJlOWU0YSJd Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n07.prod.us-east-1.postgun.com with SMTP id 5f50361aba408b30ce88aad4 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Thu, 03 Sep 2020 00:17:30 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id BB160C433A1; Thu, 3 Sep 2020 00:17:28 +0000 (UTC) Received: from tingweiz-gv.qualcomm.com (unknown [180.166.53.21]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: tingwei) by smtp.codeaurora.org (Postfix) with ESMTPSA id 45B37C433C6; Thu, 3 Sep 2020 00:17:25 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 45B37C433C6 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=tingwei@codeaurora.org From: Tingwei Zhang To: Steven Rostedt , Ingo Molnar , Alexander Shishkin , Maxime Coquelin , Alexandre Torgue Cc: Tingwei Zhang , Mathieu Poirier , Suzuki K Poulose , tsoni@codeaurora.org, Sai Prakash Ranjan , Mao Jinlong , linux-kernel@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org Subject: [PATCH v3 0/6] tracing: export event trace and trace_marker Date: Thu, 3 Sep 2020 08:17:00 +0800 Message-Id: <20200903001706.28147-1-tingwei@codeaurora.org> X-Mailer: git-send-email 2.20.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Ftrace has ability to export trace packets to other destination. Currently, only function trace can be exported. This series extends the support to event trace and trace_maker. STM is one possible destination to export ftrace. Use separate channel for each CPU to avoid mixing up packets from different CPUs together. Change from v2: Change flag definition to BIT(). (Steven) Add comment in stm_ftrace_write() to clarify it's safe to use smp_processor_id() here since preempt is disabled. (Steven) Change from v1: All changes are suggested by Steven Rostedt. User separate flag to control function trace, event trace and trace mark. Allocate channels according to num_possible_cpu() dynamically. Move ftrace_exports routines up so all ftrace can use them. Tingwei Zhang (6): stm class: ftrace: change dependency to TRACING tracing: add flag to control different traces tracing: add trace_export support for event trace tracing: add trace_export support for trace_marker stm class: ftrace: enable supported trace export flag stm class: ftrace: use different channel accroding to CPU drivers/hwtracing/stm/Kconfig | 2 +- drivers/hwtracing/stm/ftrace.c | 7 +- include/linux/trace.h | 7 + kernel/trace/trace.c | 270 ++++++++++++++++++--------------- 4 files changed, 159 insertions(+), 127 deletions(-) -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project