From patchwork Mon Feb 4 06:58:37 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Slavomir Kaslev X-Patchwork-Id: 10794989 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7518E159A for ; Mon, 4 Feb 2019 06:58:59 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5F39F2B03E for ; Mon, 4 Feb 2019 06:58:59 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 532762B042; Mon, 4 Feb 2019 06:58:59 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E199C2B03E for ; Mon, 4 Feb 2019 06:58:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725942AbfBDG66 (ORCPT ); Mon, 4 Feb 2019 01:58:58 -0500 Received: from mail-wm1-f65.google.com ([209.85.128.65]:40018 "EHLO mail-wm1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725902AbfBDG66 (ORCPT ); Mon, 4 Feb 2019 01:58:58 -0500 Received: by mail-wm1-f65.google.com with SMTP id f188so12075691wmf.5 for ; Sun, 03 Feb 2019 22:58:57 -0800 (PST) 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=KL3MX9Oa31+wvpYiK/MlpxGMwW2sM/s0Ukv4wtLtazo=; b=RB1JeTdc0J+td0zrleym1rlgHBi0okHrGHO89qEGiS8NW7o9974g9wuiYL3K/Q4IcK rhuWjczK1jPWvSPAC/vNtNmlorOjjlFOhbkHAOWe6+2oKiEJ8ciuPS/lif5IwhGbj2PV SO5cgjhrGfZM3gfqvcKmye7d/v15/V7CYcy3+iCp/RtyP+47ha6J1buwXoo1Surf81Jx lxQUMFoK087latBACfTH0bFgExe7hNDiGY8aOtgp9wh0mWHrtQtp9Vt05lA8F+Ny0db3 FpdtfdUiNm6R46fqXx05We5INCAe+Y6ZhcqD2sI/Dcd8OaDuYrwHNWky9ZcV6vG6MYCL lKxw== X-Gm-Message-State: AHQUAub6+9+7U6cZjGso9l7/itZci7kTjlflIsLKXEpIEND7D+82cdXA LJGdH1ogoVqk3rrbfbZ0n/KPpSu0ew== X-Google-Smtp-Source: AHgI3IY6Rn9tarwC+MoJPjRmPFtVxPcqARqdcO4rorabYQuLodejvHuVuCUE79ZA8lvzROF7E06R0w== X-Received: by 2002:a1c:6489:: with SMTP id y131mr11868554wmb.34.1549263536024; Sun, 03 Feb 2019 22:58:56 -0800 (PST) Received: from localhost.localdomain ([213.145.108.55]) by smtp.gmail.com with ESMTPSA id q12sm12596809wrx.31.2019.02.03.22.58.54 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 03 Feb 2019 22:58:55 -0800 (PST) From: Slavomir Kaslev To: linux-trace-devel@vger.kernel.org Cc: rostedt@goodmis.org, slavomir.kaslev@gmail.com, tstoyanov@vmware.com, ykaradzhov@vmware.com Subject: [RFC PATCH v5 00/11] Add VM kernel tracing over vsockets and FIFOs Date: Mon, 4 Feb 2019 08:58:37 +0200 Message-Id: <20190204065848.8248-1-kaslevs@vmware.com> X-Mailer: git-send-email 2.19.1 MIME-Version: 1.0 Sender: linux-trace-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-trace-devel@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patchset adds support for tracing guest kernels to trace-cmd. 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 (10): trace-cmd: Add tracecmd_create_recorder_virt function trace-cmd: Add TRACE_REQ and TRACE_RESP 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: Make setup-guest auto attach FIFOs to the guest VM config trace-cmd: Set both input and output to non-blocking when recording is stopped trace-cmd: Add VM tracing over FIFOs transport Steven Rostedt (VMware) (1): trace-cmd: Detect if vsockets are available Makefile | 7 + include/trace-cmd/trace-cmd.h | 17 +- lib/trace-cmd/trace-recorder.c | 69 ++- tracecmd/Makefile | 7 +- tracecmd/include/trace-local.h | 26 ++ tracecmd/trace-agent.c | 257 +++++++++++ tracecmd/trace-cmd.c | 4 + tracecmd/trace-msg.c | 222 +++++++++- tracecmd/trace-record.c | 759 +++++++++++++++++++++++++++++++-- tracecmd/trace-setup-guest.c | 243 +++++++++++ tracecmd/trace-usage.c | 21 +- 11 files changed, 1557 insertions(+), 75 deletions(-) create mode 100644 tracecmd/trace-agent.c create mode 100644 tracecmd/trace-setup-guest.c --- 2.19.1