mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-02 15:18:19 +00:00
ce81376364
[ Upstream commit1d7adbc74c] Avoid generating an exception if there are no clocks registered: (gdb) lx-clk-summary enable prepare protect clock count count count rate ------------------------------------------------------------------------ Python Exception <class 'gdb.error'>: No symbol "clk_root_list" in current context. Error occurred in Python: No symbol "clk_root_list" in current context. Link: https://lkml.kernel.org/r/20230323225246.3302977-1-f.fainelli@gmail.com Fixes:d1e9710b63("scripts/gdb: initial clk support: lx-clk-summary") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Cc: Jan Kiszka <jan.kiszka@siemens.com> Cc: Kieran Bingham <kbingham@kernel.org> Cc: Leonard Crestez <leonard.crestez@nxp.com> Cc: Stephen Boyd <sboyd@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
78 lines
2.6 KiB
Python
78 lines
2.6 KiB
Python
# 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are cached and potentially out of date"""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()
|