From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754176AbcBVP0j (ORCPT ); Mon, 22 Feb 2016 10:26:39 -0500 Received: from mail-wm0-f46.google.com ([74.125.82.46]:33216 "EHLO mail-wm0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752234AbcBVPYZ (ORCPT ); Mon, 22 Feb 2016 10:24:25 -0500 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 , Jeff Mahoney Subject: [PATCH 2/8] scripts/gdb: Provide a kernel list item generators Date: Mon, 22 Feb 2016 15:24:06 +0000 Message-Id: <1456154652-29023-3-git-send-email-kieran.bingham@linaro.org> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1456154652-29023-1-git-send-email-kieran.bingham@linaro.org> References: <1456154652-29023-1-git-send-email-kieran.bingham@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 --- Changes since v1: * items function removed, and replaced with Jeff Mahoney's cleaner implementations of list_for_each, and list_for_each_entry --- scripts/gdb/linux/lists.py | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/scripts/gdb/linux/lists.py b/scripts/gdb/linux/lists.py index 3a3775bc162b..9f4503738e26 100644 --- a/scripts/gdb/linux/lists.py +++ b/scripts/gdb/linux/lists.py @@ -18,6 +18,26 @@ 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 %s" % list_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 %s found. " + "Expected struct list_head *." % node.type) + yield utils.container_of(node, gdbtype, member) + + def list_check(head): nb = 0 if (head.type == list_head.get_type().pointer()): -- 2.5.0