From patchwork Thu Sep 3 00:17:00 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tingwei Zhang X-Patchwork-Id: 11752107 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7F285138A for ; Thu, 3 Sep 2020 00:17:55 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 52C5E20758 for ; Thu, 3 Sep 2020 00:17:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="kvkBldAW"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="AAty5pEh" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 52C5E20758 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:To:From: Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender :Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=Mf3JyAaYotJ+zil35rhjasN71H1V5hvc0Bc4vo9ykb0=; b=kvkBldAWs73Vh0yOohwZmHoAk3 yNP/5dELM/G+qceybYlRvXVKj+7l8v8ikvBXL4ROAicXq/l1IoqwubX9iGwZhAAUIRkfAzNENPusz Jqz6QaKoRN+LXWWJNhX7KfzvOLiMU8BqGDTTV/fedyiHCvit8+kM7tUceiu+XbwFpgNXV16gpSRDb OGLiF8jY1VbSn2FmubtXE9BYw1wOrTrSeHuYpw2W3bi/YmIERryP5NyKqGgQKoe1mqALXHlYdG8YV PQA+KL9GWApun040Ne+X/g6aW3QUSrsH6z5YrZO2nuHWmo3lArr+hxg7VMlaaGZoavutuM/nUa25t IQ16bJIw==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kDcwf-0008RW-G0; Thu, 03 Sep 2020 00:17:41 +0000 Received: from mail29.static.mailgun.info ([104.130.122.29]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kDcwZ-0008PZ-QA for linux-arm-kernel@lists.infradead.org; Thu, 03 Sep 2020 00:17:39 +0000 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1599092258; h=Content-Transfer-Encoding: MIME-Version: Message-Id: Date: Subject: Cc: To: From: Sender; bh=DWvh/xe4da4kqEIchXLMEtV/mjQkWQ1/j/n7f+uAWvc=; b=AAty5pEhlfxuZmThhM+ggSo5Oz3k7SkGfvFfuoIeBoEKlab5ErGRZKHk0AuPNXs8rDoRgK22 Y4+pulbzKZaJ/TKh2Kxx27MuNhJ1v62FtwidNjLY5p3rqJHOYnZ0+19UubzRxCYeJawYJDAH z2wcCFBCiwYrFguyvxxGyXiiNWA= X-Mailgun-Sending-Ip: 104.130.122.29 X-Mailgun-Sid: WyJiYzAxZiIsICJsaW51eC1hcm0ta2VybmVsQGxpc3RzLmluZnJhZGVhZC5vcmciLCAiYmU5ZTRhIl0= Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n04.prod.us-east-1.postgun.com with SMTP id 5f5036199f3347551f285d9f (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Thu, 03 Sep 2020 00:17:29 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id B7472C433A0; Thu, 3 Sep 2020 00:17:28 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.0 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 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200902_201738_580492_DBB94FCA X-CRM114-Status: GOOD ( 13.06 ) X-Spam-Score: -0.0 (/) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_MSPIKE_H2 RBL: Average reputation (+2) [104.130.122.29 listed in wl.mailspike.net] -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [104.130.122.29 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: tsoni@codeaurora.org, Sai Prakash Ranjan , Mathieu Poirier , Suzuki K Poulose , Mao Jinlong , linux-kernel@vger.kernel.org, Tingwei Zhang , linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.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(-) Reviewed-by: Alexander Shishkin