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Commit 47d0d128 authored by Leonard Crestez's avatar Leonard Crestez Committed by Linus Torvalds
Browse files

scripts/gdb: add hlist utilities 

This allows easily examining kernel hlists in python.

Link: http://lkml.kernel.org/r/Message-ID

:
Signed-off-by: default avatarLeonard Crestez <leonard.crestez@nxp.com>
Reviewed-by: default avatarStephen Boyd <sboyd@kernel.org>
Cc: Jason Wessel <jason.wessel@windriver.com>
Cc: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Kieran Bingham <kbingham@kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 494dbe02

scripts/gdb/linux/lists.py

+23 −0
Original line number Diff line number Diff line
@@ -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()):