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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 <leonard.crestez@nxp.com> Reviewed-by: Stephen 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: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -16,6 +16,8 @@ import gdb
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from linux import utils
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from linux import utils
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list_head = utils.CachedType("struct list_head")
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list_head = utils.CachedType("struct list_head")
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hlist_head = utils.CachedType("struct hlist_head")
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hlist_node = utils.CachedType("struct hlist_node")
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def list_for_each(head):
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def list_for_each(head):
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@ -39,6 +41,27 @@ def list_for_each_entry(head, gdbtype, member):
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yield utils.container_of(node, gdbtype, member)
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yield utils.container_of(node, gdbtype, member)
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def hlist_for_each(head):
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if head.type == hlist_head.get_type().pointer():
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head = head.dereference()
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elif head.type != hlist_head.get_type():
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raise gdb.GdbError("Must be struct hlist_head not {}"
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.format(head.type))
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node = head['first'].dereference()
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while node.address:
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yield node.address
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node = node['next'].dereference()
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def hlist_for_each_entry(head, gdbtype, member):
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for node in hlist_for_each(head):
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if node.type != hlist_node.get_type().pointer():
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raise TypeError("Type {} found. Expected struct hlist_head *."
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.format(node.type))
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yield utils.container_of(node, gdbtype, member)
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def list_check(head):
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def list_check(head):
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nb = 0
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nb = 0
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if (head.type == list_head.get_type().pointer()):
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if (head.type == list_head.get_type().pointer()):
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