From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760174AbbA3Hce (ORCPT ); Fri, 30 Jan 2015 02:32:34 -0500 Received: from thoth.sbs.de ([192.35.17.2]:59650 "EHLO thoth.sbs.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754188AbbA3HZb (ORCPT ); Fri, 30 Jan 2015 02:25:31 -0500 From: Jan Kiszka To: Andrew Morton , linux-kernel@vger.kernel.org Cc: Thomas Gleixner , Jason Wessel , kgdb-bugreport@lists.sourceforge.net, Andi Kleen , Ben Widawsky , Borislav Petkov Subject: [PATCH v12 12/28] scripts/gdb: Add task iteration class Date: Fri, 30 Jan 2015 08:24:41 +0100 Message-Id: X-Mailer: git-send-email 2.1.4 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This class allows to iterate over all tasks of the target. Signed-off-by: Jan Kiszka --- scripts/gdb/linux/tasks.py | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 scripts/gdb/linux/tasks.py diff --git a/scripts/gdb/linux/tasks.py b/scripts/gdb/linux/tasks.py new file mode 100644 index 0000000..cd25984 --- /dev/null +++ b/scripts/gdb/linux/tasks.py @@ -0,0 +1,46 @@ +# +# gdb helper commands and functions for Linux kernel debugging +# +# task & thread tools +# +# Copyright (c) Siemens AG, 2011-2013 +# +# Authors: +# Jan Kiszka +# +# This work is licensed under the terms of the GNU GPL version 2. +# + +import gdb + +from linux import utils + + +task_type = utils.CachedType("struct task_struct") + + +class TaskList: + def __init__(self): + global task_type + self.task_ptr_type = task_type.get_type().pointer() + self.init_task = gdb.parse_and_eval("init_task") + self.curr_group = self.init_task.address + self.curr_task = None + + def __iter__(self): + return self + + def next(self): + t = self.curr_task + if not t or t == self.curr_group: + self.curr_group = \ + utils.container_of(self.curr_group['tasks']['next'], + self.task_ptr_type, "tasks") + if self.curr_group == self.init_task.address: + raise StopIteration + t = self.curr_task = self.curr_group + else: + self.curr_task = \ + utils.container_of(t['thread_group']['next'], + self.task_ptr_type, "thread_group") + return t -- 2.1.4