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=-10.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=ham 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 92BD4C433B4 for ; Wed, 12 May 2021 06:38:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5C0EB613B4 for ; Wed, 12 May 2021 06:38:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229580AbhELGjg (ORCPT ); Wed, 12 May 2021 02:39:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40682 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229626AbhELGjf (ORCPT ); Wed, 12 May 2021 02:39:35 -0400 Received: from mail-ed1-x530.google.com (mail-ed1-x530.google.com [IPv6:2a00:1450:4864:20::530]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3A2F2C061574 for ; Tue, 11 May 2021 23:38:27 -0700 (PDT) Received: by mail-ed1-x530.google.com with SMTP id a25so1570822edr.12 for ; Tue, 11 May 2021 23:38:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=N2talXa222It5GbLZq192eR50wpf+1vvPxTIhgxaJ2Y=; b=ofjfQGuD3Uvl7D8an3L8Jp5JjBRxxs5A5F/yZHCzOIsHo3LKhGvp4s1i+jRyPLCQwu eMom/DM754aHepDmjWjHHL0UQSX24AQhJYllfjvlx8AxVDfI5OuuDVfDYpd5+ZyY1rRm ed2q1vG2XR7jt1QrzWb05qOgmnKwfk/B1BCepmP+zclF1BR6E4n+MOOwP+RXt9nKxPBb XyHALjRes2lcHGOY4nRtUFYKKdf/qDMOxQEyZzlRInnMzmxFGy71CQjischqTbvs4Mro vOqlpUrggju9OjHbeYb90vMTjue0rHsNfhLU5HCgosYPOkAy4oYdTTj8Rv/3LLC6eVCJ epeg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=N2talXa222It5GbLZq192eR50wpf+1vvPxTIhgxaJ2Y=; b=KjMKOENsRByAOTdgs/t71m7WPi4ZF4TCa3i3jZv7WZH6vR81K22X7MPuOOQKsJe3UP prMrIiL24MfK9F4eduywlIvnoDifduBoJJTPkFPQLz6Uvcxi/O0Cj3HUN6CXbxZykj3u ctXWRak/MVk0/STWQf0wqDZiBHvdcgHmTXUgFdhRoYV7Wjzc9ROjFfppUlxVKnPVYhbY sHBna9LkcTEQuYRYLN2iT+AaDvaM/fcUtOdjbZnfjSC63aptsAn/D9BpTc9luP8g9QEr WljZyWgTqAHXb7sw7J6lh2p7ZISmBjuAqyCb6biolZ3YP9Z2tBr+JjrWfHW3b9wyvrwe W7gg== X-Gm-Message-State: AOAM532Ym1t7Ri9okG5Qt2XaLfsAWYZpn4o6EdtLHm+Okh6CXQW7ydFl NFpWg9EAW7HovwiR3IylKPSLqGfF79odQQ== X-Google-Smtp-Source: ABdhPJyIOtwIt5wYpp4+2AZZ2F1TVYFvofOew3hz6+b1yTLLK0QVOOkYJ7a8DQNj1FhKx5IEbC4uGw== X-Received: by 2002:aa7:c98b:: with SMTP id c11mr41381494edt.50.1620801505905; Tue, 11 May 2021 23:38:25 -0700 (PDT) Received: from oberon.zico.biz ([83.222.187.186]) by smtp.gmail.com with ESMTPSA id h23sm13387723ejx.90.2021.05.11.23.38.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 11 May 2021 23:38:25 -0700 (PDT) From: "Tzvetomir Stoyanov (VMware)" To: rostedt@goodmis.org Cc: linux-trace-devel@vger.kernel.org Subject: [PoC PATCH v3 00/25] Add trace file compression Date: Wed, 12 May 2021 09:37:58 +0300 Message-Id: <20210512063823.324610-1-tz.stoyanov@gmail.com> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-trace-devel@vger.kernel.org A new PoC implementation, adding a compression to trace file. A basic infrastructure for compression support is added into the trace-cmd library. The zlib is used for compression, but more libraries and algorithms can be added. Trace data is commpressed and part of the trace file metadata: - ftrace events format - format of recorded events - information about the mapping of function addresses to the function names - trace_printk() format strings - information of the mapping a PID to a process name - options Note: not all trace-cmd commands are tested with these changes. These are verified to work with compressed trace files: trace-cmd record trace-cmd report trace-cmd dump trace-cmd agent Todo list, in order to have complete trace file compression: - Add support for more compression libraries. - Add new trace-cmd command to convert trace files from version 6 to version 7 and vise versa. - Test all trace-cmd commands with trace file v7. - Update trace-cmd documentation. v3 changes: - Compress the trace data. - Added documentation to all compression APIs. - A few minor fixes. v2 changes: - Refactored compression APIs. - Moved the trace buffers description out of the trace options section. - Added compression of "options" section of the trace file. - Updated "trace-cmd list" to show available compression algorithms. - Tested with host-guest tracing. - Merged with the patchset that bumps the trace file version. Tzvetomir Stoyanov (VMware) (25): trace-cmd library: Remove unused private APIs for creating trace files trace-cmd library: Remove unused API tracecmd_update_option trace-cmd: Check if file version is supported trace-cmd library: Add new API to get file version of input handler trace-cmd library: Select the file version when writing trace file trace-cmd: Add APIs for library initialization and free trace-cmd library: Add support for compression algorithms trace-cmd list: Show supported compression algorithms trace-cmd library: Bump the trace file version to 7 trace-cmd library: Compress part of the trace file trace-cmd library: Read compressed trace file trace-cmd library: Add new API to get compression of input handler trace-cmd library: Inherit compression algorithm from input file trace-cmd library: Extend the create file APIs to support different compression trace-cmd record: Add new parameter --compression trace-cmd dump: Add support for trace files version 7 trace-cmd library: Add support for zlib compression library trace-cmd library: Hide the logic for updating buffer offset trace-cmd: Move buffers description outside of options trace-cmd library: Track the offset in the option section in the trace file trace-cmd library: Add compression of the option section of the trace file trace-cmd library: Refactor the logic for writing trace data in the file trace-cmd library: Add APIs for read and write compressed data in chunks trace-cmd: Compress trace data trace-cmd: Read compressed trace data lib/trace-cmd/Makefile | 11 + .../include/private/trace-cmd-private.h | 74 +- lib/trace-cmd/include/trace-cmd-local.h | 9 +- lib/trace-cmd/trace-compress-zlib.c | 172 ++++ lib/trace-cmd/trace-compress.c | 787 ++++++++++++++++++ lib/trace-cmd/trace-input.c | 451 +++++++--- lib/trace-cmd/trace-output.c | 676 ++++++++++----- lib/trace-cmd/trace-util.c | 19 + tracecmd/trace-cmd.c | 11 +- tracecmd/trace-dump.c | 162 +++- tracecmd/trace-list.c | 26 + tracecmd/trace-listen.c | 3 + tracecmd/trace-read.c | 8 + tracecmd/trace-record.c | 42 +- tracecmd/trace-restore.c | 4 +- tracecmd/trace-usage.c | 6 + 16 files changed, 2101 insertions(+), 360 deletions(-) create mode 100644 lib/trace-cmd/trace-compress-zlib.c create mode 100644 lib/trace-cmd/trace-compress.c -- 2.31.1