Viewing file:  clk.py (2.57 KB) -rw-r--r--
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# SPDX-License-Identifier: GPL-2.0
#
# Copyright (c) NXP 2019
import gdb
import 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 which
are cached and potentially out of date"""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):
if utils.gdb_eval_or_none("clk_root_list") is None:
raise gdb.GdbError("No clocks registered")
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()
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