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0003
0004
0005 import gdb
0006 import sys
0007
0008 from linux import utils, lists, constants
0009
0010 clk_core_type = utils.CachedType("struct clk_core")
0011
0012
0013 def clk_core_for_each_child(hlist_head):
0014 return lists.hlist_for_each_entry(hlist_head,
0015 clk_core_type.get_type().pointer(), "child_node")
0016
0017
0018 class LxClkSummary(gdb.Command):
0019 """Print clk tree summary
0020
0021 Output is a subset of /sys/kernel/debug/clk/clk_summary
0022
0023 No calls are made during printing, instead a (c) if printed after values which
0024 are cached and potentially out of date"""
0025
0026 def __init__(self):
0027 super(LxClkSummary, self).__init__("lx-clk-summary", gdb.COMMAND_DATA)
0028
0029 def show_subtree(self, clk, level):
0030 gdb.write("%*s%-*s %7d %8d %8d %11lu%s\n" % (
0031 level * 3 + 1, "",
0032 30 - level * 3,
0033 clk['name'].string(),
0034 clk['enable_count'],
0035 clk['prepare_count'],
0036 clk['protect_count'],
0037 clk['rate'],
0038 '(c)' if clk['flags'] & constants.LX_CLK_GET_RATE_NOCACHE else ' '))
0039
0040 for child in clk_core_for_each_child(clk['children']):
0041 self.show_subtree(child, level + 1)
0042
0043 def invoke(self, arg, from_tty):
0044 gdb.write(" enable prepare protect \n")
0045 gdb.write(" clock count count count rate \n")
0046 gdb.write("------------------------------------------------------------------------\n")
0047 for clk in clk_core_for_each_child(gdb.parse_and_eval("clk_root_list")):
0048 self.show_subtree(clk, 0)
0049 for clk in clk_core_for_each_child(gdb.parse_and_eval("clk_orphan_list")):
0050 self.show_subtree(clk, 0)
0051
0052
0053 LxClkSummary()
0054
0055
0056 class LxClkCoreLookup(gdb.Function):
0057 """Find struct clk_core by name"""
0058
0059 def __init__(self):
0060 super(LxClkCoreLookup, self).__init__("lx_clk_core_lookup")
0061
0062 def lookup_hlist(self, hlist_head, name):
0063 for child in clk_core_for_each_child(hlist_head):
0064 if child['name'].string() == name:
0065 return child
0066 result = self.lookup_hlist(child['children'], name)
0067 if result:
0068 return result
0069
0070 def invoke(self, name):
0071 name = name.string()
0072 return (self.lookup_hlist(gdb.parse_and_eval("clk_root_list"), name) or
0073 self.lookup_hlist(gdb.parse_and_eval("clk_orphan_list"), name))
0074
0075
0076 LxClkCoreLookup()