From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751658AbcEJHqD (ORCPT ); Tue, 10 May 2016 03:46:03 -0400 Received: from goliath.siemens.de ([192.35.17.28]:47353 "EHLO goliath.siemens.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752048AbcEJHj7 (ORCPT ); Tue, 10 May 2016 03:39:59 -0400 From: Jan Kiszka To: Andrew Morton Cc: linux-kernel@vger.kernel.org, Kieran Bingham , Jeff Mahoney Subject: [PATCH 03/18] scripts/gdb: Provide kernel list item generators Date: Tue, 10 May 2016 09:39:28 +0200 Message-Id: <2b0998564e6e5abe53585d466f87e491331fd2a4.1462865983.git.jan.kiszka@siemens.com> 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 From: Kieran Bingham Facilitate linked-list items by providing a generator to return the dereferenced, and type-cast objects from a kernel linked list CC: Jeff Mahoney Signed-off-by: Kieran Bingham Signed-off-by: Jan Kiszka --- scripts/gdb/linux/lists.py | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/scripts/gdb/linux/lists.py b/scripts/gdb/linux/lists.py index 3a3775b..2f335fb 100644 --- a/scripts/gdb/linux/lists.py +++ b/scripts/gdb/linux/lists.py @@ -18,6 +18,27 @@ from linux import utils list_head = utils.CachedType("struct list_head") +def list_for_each(head): + if head.type == list_head.get_type().pointer(): + head = head.dereference() + elif head.type != list_head.get_type(): + raise gdb.GdbError("Must be struct list_head not {}" + .format(head.type)) + + node = head['next'].dereference() + while node.address != head.address: + yield node.address + node = node['next'].dereference() + + +def list_for_each_entry(head, gdbtype, member): + for node in list_for_each(head): + if node.type != list_head.get_type().pointer(): + raise TypeError("Type {} found. Expected struct list_head *." + .format(node.type)) + yield utils.container_of(node, gdbtype, member) + + def list_check(head): nb = 0 if (head.type == list_head.get_type().pointer()): -- 2.1.4