From patchwork Thu Mar 3 11:41:07 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kieran Bingham X-Patchwork-Id: 63462 Delivered-To: patch@linaro.org Received: by 10.112.199.169 with SMTP id jl9csp2893969lbc; Thu, 3 Mar 2016 03:41:42 -0800 (PST) X-Received: by 10.98.15.145 with SMTP id 17mr2915235pfp.19.1457005302323; Thu, 03 Mar 2016 03:41:42 -0800 (PST) Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id ty8si46384038pac.61.2016.03.03.03.41.42; Thu, 03 Mar 2016 03:41:42 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dkim=pass header.i=@linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757443AbcCCLle (ORCPT + 30 others); Thu, 3 Mar 2016 06:41:34 -0500 Received: from mail-wm0-f54.google.com ([74.125.82.54]:36712 "EHLO mail-wm0-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757336AbcCCLla (ORCPT ); Thu, 3 Mar 2016 06:41:30 -0500 Received: by mail-wm0-f54.google.com with SMTP id n186so127599487wmn.1 for ; Thu, 03 Mar 2016 03:41:29 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=aRExnjtXrAwZYnJfb9E0C6ac63AgPQ4VNooWTy0Yjws=; b=HASM0u2FSUCO54nZEIA4oROquEZF8p5UAr0xGfMbkYGgiRgoD9OkS4y0t4oufeknOk Kn9llK3Tj+jQEffkLrr25SIm4N0DHr5GaqfQwoFcBHu5ZP3lq+CANeDVWfPCcPiW3Jsf idzy3Z6Th/x7U+jBrtHPf/EqvFrjEjym4Conw= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=aRExnjtXrAwZYnJfb9E0C6ac63AgPQ4VNooWTy0Yjws=; b=MiK0csrvTQo789TZJ98ENRPnRBmRtYb7BUO5w/apYUDGmOkjMnpWDNJKozVZVBSkrq L97VYOXLto6mRXBPJK4aAYMT+6UlTYfM+yJkP4ayWxZyW1ullFVHd9tWp0CTu8TD52PF NwxGvaO7a926ptn8QPEEofCOTG0pKr5Wp0/J0jR2Yhjf0UAsvrU4NPjfSLVzmkjw+jpf jNTZuRGnbT/bUtepfpcH0uaiTHMLlBcyGUjnVGHnubP2o+kiqInB1Z5hg63opkD6tbDS vcDkjrtlr4FLS6T9L2KbgpXVoQNWJPMQGUyWgPVk7eSiDpsPQuo/y0WJ5BriGcs733Rl GY/g== X-Gm-Message-State: AD7BkJIA0XxoaWJ16BxbhOvodhWdTgrpRFijjup6IuuIDZ7ivNs75NmqlUH4sqRlD0C1BfZK X-Received: by 10.28.195.9 with SMTP id t9mr3082473wmf.9.1457005289140; Thu, 03 Mar 2016 03:41:29 -0800 (PST) Received: from localhost.localdomain (cpc87017-aztw30-2-0-cust65.18-1.cable.virginm.net. [92.232.232.66]) by smtp.gmail.com with ESMTPSA id e19sm8570696wmd.1.2016.03.03.03.41.28 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 03 Mar 2016 03:41:28 -0800 (PST) From: Kieran Bingham To: jan.kiszka@siemens.com, linux-kernel@vger.kernel.org Cc: lee.jones@linaro.org, peter.griffin@linaro.org, maxime.coquelin@st.com, Kieran Bingham Subject: [PATCHv3 13/13] scripts/gdb: Add lx_thread_info_by_pid helper Date: Thu, 3 Mar 2016 11:41:07 +0000 Message-Id: <1457005267-843-14-git-send-email-kieran.bingham@linaro.org> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1457005267-843-1-git-send-email-kieran.bingham@linaro.org> References: <1457005267-843-1-git-send-email-kieran.bingham@linaro.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The tasks module already provides helpers to find the task struct by pid, and the thread_info by task struct; however this is cumbersome to utilise on the gdb commandline. Wrap these two functionalities together in an extra single helper to allow exploring the thread info, from a PID value Signed-off-by: Kieran Bingham --- scripts/gdb/linux/tasks.py | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) -- 2.5.0 diff --git a/scripts/gdb/linux/tasks.py b/scripts/gdb/linux/tasks.py index 862a4ae24d49..1bf949c43b76 100644 --- a/scripts/gdb/linux/tasks.py +++ b/scripts/gdb/linux/tasks.py @@ -114,3 +114,22 @@ variable.""" LxThreadInfoFunc() + + +class LxThreadInfoByPidFunc (gdb.Function): + """Calculate Linux thread_info from task variable found by pid + +$lx_thread_info_by_pid(PID): Given PID, return the corresponding thread_info +variable.""" + + def __init__(self): + super(LxThreadInfoByPidFunc, self).__init__("lx_thread_info_by_pid") + + def invoke(self, pid): + task = get_task_by_pid(pid) + if task: + return get_thread_info(task.dereference()) + else: + raise gdb.GdbError("No task of PID " + str(pid)) + +LxThreadInfoByPidFunc()