# SPDX-License-Identifier: GPL-2.0## Copyright (c) NXP 2019 import gdbimport sys from linux import utils, lists, constants clk_core_type = utils.CachedType("struct clk_core")  def clk_core_for_each_child(hlist_head):    return lists.hlist_for_each_entry(hlist_head,            clk_core_type.get_type().pointer(), "child_node")  class LxClkSummary(gdb.Command):    """Print clk tree summary Output is a subset of /sys/kernel/debug/clk/clk_summary No calls are made during printing, instead a (c) if printed after values whichare cached and potentially out of date"""     def __init__(self):        super(LxClkSummary, self).__init__("lx-clk-summary", gdb.COMMAND_DATA)     def show_subtree(self, clk, level):        gdb.write("%*s%-*s %7d %8d %8d %11lu%s\n" % (                level * 3 + 1, "",                30 - level * 3,                clk['name'].string(),                clk['enable_count'],                clk['prepare_count'],                clk['protect_count'],                clk['rate'],                '(c)' if clk['flags'] & constants.LX_CLK_GET_RATE_NOCACHE else '   '))         for child in clk_core_for_each_child(clk['children']):            self.show_subtree(child, level + 1)     def invoke(self, arg, from_tty):        gdb.write("                                 enable  prepare  protect               \n")        gdb.write("   clock                          count    count    count        rate   \n")        gdb.write("------------------------------------------------------------------------\n")        for clk in clk_core_for_each_child(gdb.parse_and_eval("clk_root_list")):            self.show_subtree(clk, 0)        for clk in clk_core_for_each_child(gdb.parse_and_eval("clk_orphan_list")):            self.show_subtree(clk, 0)  LxClkSummary()  class LxClkCoreLookup(gdb.Function):    """Find struct clk_core by name"""     def __init__(self):        super(LxClkCoreLookup, self).__init__("lx_clk_core_lookup")     def lookup_hlist(self, hlist_head, name):        for child in clk_core_for_each_child(hlist_head):            if child['name'].string() == name:                return child            result = self.lookup_hlist(child['children'], name)            if result:                return result     def invoke(self, name):        name = name.string()        return (self.lookup_hlist(gdb.parse_and_eval("clk_root_list"), name) or                self.lookup_hlist(gdb.parse_and_eval("clk_orphan_list"), name))  LxClkCoreLookup()