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Message-Id: <d57d54f83a6e5c7557715dbaf50d2e7351e6b7f6.1422514006.git.jan.kiszka@siemens.com>
Date: Thu, 29 Jan 2015 07:46:31 +0100
From: Jan Kiszka <jan.kiszka@...mens.com>
To: Andrew Morton <akpm@...ux-foundation.org>,
linux-kernel@...r.kernel.org
Cc: Thomas Gleixner <tglx@...utronix.de>,
Jason Wessel <jason.wessel@...driver.com>,
kgdb-bugreport@...ts.sourceforge.net,
Andi Kleen <andi@...stfloor.org>,
Tom Tromey <tromey@...hat.com>,
Ben Widawsky <ben@...dawsk.net>, Borislav Petkov <bp@...e.de>
Subject: [PATCH v11 12/28] scripts/gdb: Add task iteration class
This class allows to iterate over all tasks of the target.
Signed-off-by: Jan Kiszka <jan.kiszka@...mens.com>
---
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 <jan.kiszka@...mens.com>
+#
+# 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
--
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