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Mon, 14 Sep 2020 23:27:37 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id F08B5C433F1; Mon, 14 Sep 2020 23:27:36 +0000 (UTC) Received: from codeaurora.org (unknown [180.166.53.21]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: tingwei) by smtp.codeaurora.org (Postfix) with ESMTPSA id 688E7C433CA; Mon, 14 Sep 2020 23:27:33 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 688E7C433CA 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=fail smtp.mailfrom=tingweiz@codeaurora.org Date: Tue, 15 Sep 2020 07:27:29 +0800 From: Tingwei Zhang To: Tingwei Zhang Subject: Re: [PATCH v3 0/6] tracing: export event trace and trace_marker Message-ID: <20200914232729.GB20431@codeaurora.org> References: <20200903001706.28147-1-tingwei@codeaurora.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200903001706.28147-1-tingwei@codeaurora.org> User-Agent: Mutt/1.5.24 (2015-08-30) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200914_192812_329002_242944D6 X-CRM114-Status: GOOD ( 19.52 ) 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 , Alexandre Torgue , Mathieu Poirier , Suzuki K Poulose , Alexander Shishkin , Mao Jinlong , linux-kernel@vger.kernel.org, Steven Rostedt , Ingo Molnar , Maxime Coquelin , linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Alexander, Maxime, Aleandre, May I know your comments for this patch set? Thanks, Tingwei On Thu, Sep 03, 2020 at 08:17:00AM +0800, Tingwei Zhang wrote: > 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 > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel