[PATCH 2/5] scripts/gdb: Provide a kernel list item generator
From: Kieran Bingham
Date: Wed Jan 20 2016 - 06:17:25 EST
Facilitate linked-list items by providing a generator to return
the dereferenced, and type-cast objects from a kernel linked list
Signed-off-by: Kieran Bingham <kieran.bingham@xxxxxxxxxx>
---
This is quite a useful wrapper to faciliate looping on lists.
It is sort of equivalent to the list_for_each_entry macro.
Let me know if it should be renamed, or live elsewhere.
scripts/gdb/linux/lists.py | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/scripts/gdb/linux/lists.py b/scripts/gdb/linux/lists.py
index 3a3775bc162b..d2c6ce165cb1 100644
--- a/scripts/gdb/linux/lists.py
+++ b/scripts/gdb/linux/lists.py
@@ -18,6 +18,15 @@ from linux import utils
list_head = utils.CachedType("struct list_head")
+def items(list_type, list_location, item_list):
+ """items Generator return items from a kernel linked list"""
+ item_list_head = item_list
+ next_item = item_list_head['next'].dereference()
+ while next_item != item_list_head:
+ yield utils.container_of(next_item, list_type, list_location)
+ next_item = next_item['next'].dereference()
+
+
def list_check(head):
nb = 0
if (head.type == list_head.get_type().pointer()):
--
2.5.0