From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from simark.ca by simark.ca with LMTP id 16FtMS/+nmX49DcAWB0awg (envelope-from ) for ; Wed, 10 Jan 2024 15:29:35 -0500 Authentication-Results: simark.ca; dkim=pass (2048-bit key; unprotected) header.d=lists.lttng.org header.i=@lists.lttng.org header.a=rsa-sha256 header.s=default header.b=aIjlC+Oo; dkim-atps=neutral Received: by simark.ca (Postfix, from userid 112) id BC64D1E0C2; Wed, 10 Jan 2024 15:29:35 -0500 (EST) Received: from lists.lttng.org (lists.lttng.org [167.114.26.123]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by simark.ca (Postfix) with ESMTPS id 296ED1E098 for ; Wed, 10 Jan 2024 15:29:33 -0500 (EST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=lists.lttng.org; s=default; t=1704918572; bh=u1arDYqfK1XgAHJUVoXW2jTByFQ9f4dlUw0dCaEOb/I=; h=Date:To:Subject:List-Id:List-Unsubscribe:List-Archive:List-Post: List-Help:List-Subscribe:From:Reply-To:From; b=aIjlC+OokYk9hB2xIB4qvrHd8luLUV8dT8kzwryDVEQ0aryHIEnQvroFSoT3uUBXc BLYrWuKhgMIeetpVzLnrDeSB05cXcwg2h45LB/iYlbp5RAFLSd6cQy4XNriZ9OE5pE COREr1HyAad01wxoZpki9VQ8cEab8V9FcEpcRkGRyZAET6NF7UgfzTNfPPRqPGeswt OHGsf56gMrRgue0foprlZYTXwbfDVYnCVfB/IGmagk8kCq0tJEwJJFaZXg/1+bgtEN 9WYc5IO5d5YjdDH1X3Ht04ScNwJiiAdxf8M2Jh6yXCeElByNf61p7YHMwN7bwLH+VC 6WPrgLln/sqKg== Received: from lists-lttng01.efficios.com (localhost [IPv6:::1]) by lists.lttng.org (Postfix) with ESMTP id 4T9KCc3MgYz1JNT; Wed, 10 Jan 2024 15:29:32 -0500 (EST) Received: from smtpout.efficios.com (smtpout.efficios.com [167.114.26.122]) by lists.lttng.org (Postfix) with ESMTPS id 4T9KCY5pWbz1JNS for ; Wed, 10 Jan 2024 15:29:29 -0500 (EST) Received: from [172.16.0.134] (192-222-143-198.qc.cable.ebox.net [192.222.143.198]) by smtpout.efficios.com (Postfix) with ESMTPSA id 4T9KCW6Cj9zKL0; Wed, 10 Jan 2024 15:29:27 -0500 (EST) Message-ID: <26640415-9822-45d3-a713-060726de2166@efficios.com> Date: Wed, 10 Jan 2024 15:29:27 -0500 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Content-Language: en-US To: lttng-dev , Diamon discuss , linux-trace-users , linux-kernel Subject: [lttng-dev] [RELEASE] LTTng-UST 2.12.9 and 2.13.7 (Linux user-space tracer) X-BeenThere: lttng-dev@lists.lttng.org X-Mailman-Version: 2.1.39 Precedence: list List-Id: LTTng development list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Mathieu Desnoyers via lttng-dev Reply-To: Mathieu Desnoyers Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Errors-To: lttng-dev-bounces@lists.lttng.org Sender: "lttng-dev" LTTng-UST, the Linux Trace Toolkit Next Generation Userspace Tracer, is a low-overhead application tracer. The library "liblttng-ust" enables tracing of applications and libraries. * New and noteworthy in these releases: Specific to 2.13.7, a fix for misaligned urcu reader accesses was introduced. It only applies to the lttng-ust 2.13 branch because it implements its own "lttng-ust-urcu" flavor. Also specific to 2.13.7, "sync" vs "unsync" enablers are introduced to eliminate an O(n*m) algorithm: Eliminate iteration over unmodified enablers when synchronizing the enablers vs event state. The intent is to turn a O(m*n) algorithm (m = number of enablers, n = number of event probes) into a O(n) when enabling many additional events when tracing is active. Specifically in 2.12.9, the rfork() wrapper is fixed: it was not passing the flags arguments. This was fixed in a larger commit in the master and stable-2.13 branches. Both stable branches include: - a build system fix for documentation examples with old autoconf when used with a relative path. - a clang warning fix around volatile qualifier on function pointers. - Python agent uplift to adapt to modern python (>= 3.10), - a possible race condition in the ustfork helper. Enjoy! Mathieu Project website: https://lttng.org Documentation: https://lttng.org/docs Download link: https://lttng.org/download Detailed change logs: 2024-01-10 (National Houseplant Appreciation Day) lttng-ust 2.13.7 * fix: invoke MKDIR_P before changing directories * fix: -Wsingle-bit-bitfield-constant-conversion with clang16 * fix: clean java inner class files in examples * Introduce sync vs unsync enablers * Fix: misaligned urcu reader accesses * ustfork: Fix warning about volatile qualifier * ustfork: Fix possible race conditions * Fix: tracepoint: Remove trailing \ at the end of macro * fix: python agent: use stdlib distutils when setuptools is installed * fix: python agent: install on Debian python >= 3.10 * fix: python agent: Add a dependency on generated files * python: use setuptools with python >= 3.12 2024-01-10 (National Houseplant Appreciation Day) lttng-ust 2.12.9 * fix: invoke MKDIR_P before changing directories * fix: clean java inner class files in examples * ustfork: Fix warning about volatile qualifier * ustfork: Fix possible race conditions * Fix: FreeBSD: Pass flags arguments to rfork wrapper * fix: python agent: use stdlib distutils when setuptools is installed * fix: python agent: install on Debian python >= 3.10 * fix: python agent: Add a dependency on generated files * python: use setuptools with python >= 3.12 -- Mathieu Desnoyers EfficiOS Inc. https://www.efficios.com _______________________________________________ lttng-dev mailing list lttng-dev@lists.lttng.org https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev