From 47d0d12855c9eee9dac72d2359f2ccfac3f7f501 Mon Sep 17 00:00:00 2001 From: Leonard Crestez Date: Tue, 14 May 2019 15:46:05 -0700 Subject: scripts/gdb: add hlist utilities This allows easily examining kernel hlists in python. Link: http://lkml.kernel.org/r/Message-ID: Signed-off-by: Leonard Crestez Reviewed-by: Stephen Boyd Cc: Jason Wessel Cc: Jan Kiszka Cc: Kieran Bingham Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- scripts/gdb/linux/lists.py | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'scripts') 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 @@ -16,6 +16,8 @@ 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): @@ -39,6 +41,27 @@ def list_for_each_entry(head, gdbtype, member): 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()): -- cgit v1.2.3-59-g8ed1b