Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753228AbcC3MBX (ORCPT ); Wed, 30 Mar 2016 08:01:23 -0400 Received: from mail-wm0-f46.google.com ([74.125.82.46]:38367 "EHLO mail-wm0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753084AbcC3MBT (ORCPT ); Wed, 30 Mar 2016 08:01:19 -0400 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: [PATCHv4 12/12] scripts/gdb: Add lx_thread_info_by_pid helper Date: Wed, 30 Mar 2016 13:00:51 +0100 Message-Id: <1459339251-29611-13-git-send-email-kieran.bingham@linaro.org> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1459339251-29611-1-git-send-email-kieran.bingham@linaro.org> References: <1459339251-29611-1-git-send-email-kieran.bingham@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1247 Lines: 41 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(+) 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() -- 2.5.0