lkml.org 
[lkml]   [2019]   [Apr]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 1/3] scripts/gdb: Add hlist utilities
Date
This allows easily examining kernel hlists in python.

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
---
scripts/gdb/linux/lists.py | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)

diff --git a/scripts/gdb/linux/lists.py b/scripts/gdb/linux/lists.py
index 1987d756b36b..55356b66f8ea 100644
--- a/scripts/gdb/linux/lists.py
+++ b/scripts/gdb/linux/lists.py
@@ -14,10 +14,12 @@
import gdb

from linux import utils

list_head = utils.CachedType("struct list_head")
+hlist_head = utils.CachedType("struct hlist_head")
+hlist_node = utils.CachedType("struct hlist_node")


def list_for_each(head):
if head.type == list_head.get_type().pointer():
head = head.dereference()
@@ -37,10 +39,31 @@ def list_for_each_entry(head, gdbtype, member):
raise TypeError("Type {} found. Expected struct list_head *."
.format(node.type))
yield utils.container_of(node, gdbtype, member)


+def hlist_for_each(head):
+ if head.type == hlist_head.get_type().pointer():
+ head = head.dereference()
+ elif head.type != hlist_head.get_type():
+ raise gdb.GdbError("Must be struct hlist_head not {}"
+ .format(head.type))
+
+ node = head['first'].dereference()
+ while node.address:
+ yield node.address
+ node = node['next'].dereference()
+
+
+def hlist_for_each_entry(head, gdbtype, member):
+ for node in hlist_for_each(head):
+ if node.type != hlist_node.get_type().pointer():
+ raise TypeError("Type {} found. Expected struct hlist_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()):
head = head.dereference()
elif (head.type != list_head.get_type()):
--
2.17.1
\
 
 \ /
  Last update: 2019-04-22 10:27    [W:0.113 / U:0.120 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site