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=-2.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,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 C9DF6C31E5B for ; Tue, 18 Jun 2019 14:45:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9A8AE20B1F for ; Tue, 18 Jun 2019 14:45:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="PPVrhJdb" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728903AbfFROpE (ORCPT ); Tue, 18 Jun 2019 10:45:04 -0400 Received: from mail-wr1-f52.google.com ([209.85.221.52]:33416 "EHLO mail-wr1-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726446AbfFROpE (ORCPT ); Tue, 18 Jun 2019 10:45:04 -0400 Received: by mail-wr1-f52.google.com with SMTP id n9so14340656wru.0 for ; Tue, 18 Jun 2019 07:45:02 -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=xRZNxWRzhLcujrPoZ56I4MYaiFUr/lxleXCQEk75HRw=; b=PPVrhJdb8qMPJ4QH/ZRxghn3Ah4x3fCt2Ls1W59+IDi5LqDUhCH5bdBZJC42Emx0Ie mDUGy9sXQC1inlVKx1BjheaVoSSyeoCG1I5v4O0OEhxWKxgnDvGhChuXQppSPupBShxs fymtRh39En5pFriEJxd6OLH6Zlf+spMK/wDgn9kL84ZoKQsZNCS/vOrG+wsMY5qA3gsq Yk5TLKapRww+y9rgNZ1ilP0sawR8BXlILOo8Hd6bIwN/R0SPtfJv/H8N7Gce0yj4GOGl eBWdoA9pYCxkUUcEJ4znUFviZJ3kSEIgQRu+LVPRFSkasUkvAq/3WVtQ1PenABsXaT2x Yzzw== 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=xRZNxWRzhLcujrPoZ56I4MYaiFUr/lxleXCQEk75HRw=; b=rZb7C66PRfOrZE24v3lgYD8jN80KrtPoKZqSo/6/KekgE7PNB+cBu5yLNpl3+fVLNY tZ7RxjmZ+AMxK2oI6qpdv9pwythDtITPL4nUyxr4Op5B2ZHJjRYjCmJ0BOsyM9P5v3fd 5uRIBj2kRrDJgRLtzInBHGV1vrf2U/5AYfcrPHM/yodT9Ejahmd5p60+zrd4JscXVmfK dmcilk/5sT4vtBMQfvUeKkKI5Ze9eO0cuOuHpTyyo6Ix3VC0j/x93OQQtTScponOtSl6 dwi19Zctp6Pbaf8E3MxTNeRHa+wpMqCGVj8maJ/ZmLcHXtD4ux/X+kn42iLTzwb/YJOc l91w== X-Gm-Message-State: APjAAAUGIGxkQX19PTkgn4X5WRxs4+gpeg5VomEgzF/P9kWcRpNqLHmk w/+ogw5YgCERnaVgCHT9ctyAE0s= X-Google-Smtp-Source: APXvYqzNFqCOis1NaPqsxi6NMtMHPtqc9O8dgcyUh8n/TbY2iXNkrdyQMsDLLw+XSIVrlWAqSfHMSA== X-Received: by 2002:adf:b605:: with SMTP id f5mr23722801wre.305.1560869102193; Tue, 18 Jun 2019 07:45:02 -0700 (PDT) Received: from box.eng.vmware.com ([146.247.46.5]) by smtp.gmail.com with ESMTPSA id r3sm17686071wrr.61.2019.06.18.07.45.01 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Tue, 18 Jun 2019 07:45:01 -0700 (PDT) From: "Slavomir Kaslev (VMware)" To: rostedt@goodmis.org Cc: linux-trace-devel@vger.kernel.org Subject: [PATCH v12 00/13] Add VM kernel tracing over vsockets and FIFOs Date: Tue, 18 Jun 2019 17:44:42 +0300 Message-Id: <20190618144455.3954-1-slavomir.kaslev@gmail.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-trace-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-trace-devel@vger.kernel.org This patchset adds support for tracing guest kernels to trace-cmd. Changes in v12: - fix patches' Signed-off-by tags Changes in v11: - fix flushing tracing data bug when doing VM recording Changes in v10: - add support for specifying VMware Workstation guests by name on the command line - add docstring for tracecmd_create_recorder_virt() - add a comment on why we need to poll() in direct_splice_data() Changes in v9: - none Changes in v8: - switched protocol message encoding of ports to text - switched ports data type to unsigned since vsockets port numbers can overflow int and be confused with errors codes by other code - added automatic naming for guests with no names (for VMware Workstation guests currently) - added --debug option to trace-cmd agent Changes in v7: - fixed potential memory leak in add_arg() - call msg_free() in tracecmd_msg_recv_trace_req() eventhough we're stealing the message buffer - added is_guest and is_agent macros and use throughout tracecmd_record.c instead of testing instance->flags bits - avoid memory allocation in make_dir() Changes in v6: - added specialized data transfer path over FIFOs making single splice() per iteration - made tracecmd_msg_recv_trace_req/tracecmd_msg_recv_trace_resp more defensive to invalid messages Changes in v5: - add FIFOs transport for tracing data - fixed a bug in tracecmd_msg_wait_close Changes in v4: - detect and use splice(2) on vsock sockets if possible - switch port numbers to unsigned int - trace-cmd record --date flag is now set for all guests if provided by the user - removed grow_cap and exponential buffer size growth Changes in v3: - addressed Steven's feedback - detect and disable guest tracing if is not available - the --date flag is now treated as global for all guest instances - fixed a bug that caused --date to be ignored for host tracing data when tracing guests Changes in v2: - rebased on top of protocol V3 - fixed system clock timestamps with the --date flag Slavomir Kaslev (11): trace-cmd: Make ports unsigned int trace-cmd: Add tracecmd_create_recorder_virt() function trace-cmd: Add VM tracing protocol messages trace-cmd: Add buffer instance flags for tracing in guest and agent context trace-cmd: Add VM kernel tracing over vsockets transport trace-cmd: Use splice(2) for vsockets if available trace-cmd: Add `trace-cmd setup-guest` command trace-cmd: Try to autodetect number of guest CPUs in setup-guest if not specified trace-cmd: Add setup-guest flag for attaching FIFOs to the guest VM config trace-cmd: Add splice() recording from FIFO without additional pipe buffer trace-cmd: Add support for tracing VMware Workstation VMs by name Slavomir Kaslev (VMware) (1): trace-cmd: Switch stop recording signal to SIGUSR1 Steven Rostedt (VMware) (1): trace-cmd: Detect if vsockets are available Makefile | 7 + include/trace-cmd/trace-cmd.h | 20 +- lib/trace-cmd/trace-recorder.c | 154 ++++-- tracecmd/Makefile | 5 + tracecmd/include/trace-local.h | 29 ++ tracecmd/trace-agent.c | 294 +++++++++++ tracecmd/trace-cmd.c | 4 + tracecmd/trace-listen.c | 10 +- tracecmd/trace-msg.c | 274 ++++++++++- tracecmd/trace-record.c | 865 +++++++++++++++++++++++++++++++-- tracecmd/trace-setup-guest.c | 247 ++++++++++ tracecmd/trace-usage.c | 22 +- 12 files changed, 1824 insertions(+), 107 deletions(-) create mode 100644 tracecmd/trace-agent.c create mode 100644 tracecmd/trace-setup-guest.c -- 2.20.1