mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-25 02:10:50 +07:00
1b2c841467
Add support to find string-similar symbols. When option --sim SYM is
specified, checkkconfigsymbols.py will print at most 10 symbols defined
in Kconfig that are string similar to SYM in the following format:
Similar symbols: $COMMA_SEPARATED_LIST_OF_SYMBOLS
Note, if no similar symbols are found it is indicated as follows:
Similar symbols: no similar symbols found
Since the implemented functionality is also useful when searching the
entire source or when diffing two commits, a list of similar symbols is
printed unconditionally with the other data. In order to make the
output more readable, the format now looks as follows:
$UNDEFINED_SYMBOL
Referencing files: $COMMA_SEPARATED_LIST_OF_FILES
Similar symbols: $COMMA_SEPARATED_LIST_OF_SYMBOLS
[Optional with '--find']
Commits changing symbol:
- $COMMIT_1_HASH ("$COMMIT_1_MESSAGE")
- $COMMIT_2_HASH ("$COMMIT_2_MESSAGE")
or
- no commit found
Signed-off-by: Valentin Rothberg <valentinrothberg@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
467 lines
15 KiB
Python
Executable File
467 lines
15 KiB
Python
Executable File
#!/usr/bin/env python2
|
|
|
|
"""Find Kconfig symbols that are referenced but not defined."""
|
|
|
|
# (c) 2014-2015 Valentin Rothberg <valentinrothberg@gmail.com>
|
|
# (c) 2014 Stefan Hengelein <stefan.hengelein@fau.de>
|
|
#
|
|
# Licensed under the terms of the GNU GPL License version 2
|
|
|
|
|
|
import difflib
|
|
import os
|
|
import re
|
|
import signal
|
|
import sys
|
|
from multiprocessing import Pool, cpu_count
|
|
from optparse import OptionParser
|
|
from subprocess import Popen, PIPE, STDOUT
|
|
|
|
|
|
# regex expressions
|
|
OPERATORS = r"&|\(|\)|\||\!"
|
|
FEATURE = r"(?:\w*[A-Z0-9]\w*){2,}"
|
|
DEF = r"^\s*(?:menu){,1}config\s+(" + FEATURE + r")\s*"
|
|
EXPR = r"(?:" + OPERATORS + r"|\s|" + FEATURE + r")+"
|
|
DEFAULT = r"default\s+.*?(?:if\s.+){,1}"
|
|
STMT = r"^\s*(?:if|select|depends\s+on|(?:" + DEFAULT + r"))\s+" + EXPR
|
|
SOURCE_FEATURE = r"(?:\W|\b)+[D]{,1}CONFIG_(" + FEATURE + r")"
|
|
|
|
# regex objects
|
|
REGEX_FILE_KCONFIG = re.compile(r".*Kconfig[\.\w+\-]*$")
|
|
REGEX_FEATURE = re.compile(r'(?!\B)' + FEATURE + r'(?!\B)')
|
|
REGEX_SOURCE_FEATURE = re.compile(SOURCE_FEATURE)
|
|
REGEX_KCONFIG_DEF = re.compile(DEF)
|
|
REGEX_KCONFIG_EXPR = re.compile(EXPR)
|
|
REGEX_KCONFIG_STMT = re.compile(STMT)
|
|
REGEX_KCONFIG_HELP = re.compile(r"^\s+(help|---help---)\s*$")
|
|
REGEX_FILTER_FEATURES = re.compile(r"[A-Za-z0-9]$")
|
|
REGEX_NUMERIC = re.compile(r"0[xX][0-9a-fA-F]+|[0-9]+")
|
|
REGEX_QUOTES = re.compile("(\"(.*?)\")")
|
|
|
|
|
|
def parse_options():
|
|
"""The user interface of this module."""
|
|
usage = "%prog [options]\n\n" \
|
|
"Run this tool to detect Kconfig symbols that are referenced but " \
|
|
"not defined in\nKconfig. The output of this tool has the " \
|
|
"format \'Undefined symbol\\tFile list\'\n\n" \
|
|
"If no option is specified, %prog will default to check your\n" \
|
|
"current tree. Please note that specifying commits will " \
|
|
"\'git reset --hard\'\nyour current tree! You may save " \
|
|
"uncommitted changes to avoid losing data."
|
|
|
|
parser = OptionParser(usage=usage)
|
|
|
|
parser.add_option('-c', '--commit', dest='commit', action='store',
|
|
default="",
|
|
help="Check if the specified commit (hash) introduces "
|
|
"undefined Kconfig symbols.")
|
|
|
|
parser.add_option('-d', '--diff', dest='diff', action='store',
|
|
default="",
|
|
help="Diff undefined symbols between two commits. The "
|
|
"input format bases on Git log's "
|
|
"\'commmit1..commit2\'.")
|
|
|
|
parser.add_option('-f', '--find', dest='find', action='store_true',
|
|
default=False,
|
|
help="Find and show commits that may cause symbols to be "
|
|
"missing. Required to run with --diff.")
|
|
|
|
parser.add_option('-i', '--ignore', dest='ignore', action='store',
|
|
default="",
|
|
help="Ignore files matching this pattern. Note that "
|
|
"the pattern needs to be a Python regex. To "
|
|
"ignore defconfigs, specify -i '.*defconfig'.")
|
|
|
|
parser.add_option('-s', '--sim', dest='sim', action='store', default="",
|
|
help="Print a list of maximum 10 string-similar symbols.")
|
|
|
|
parser.add_option('', '--force', dest='force', action='store_true',
|
|
default=False,
|
|
help="Reset current Git tree even when it's dirty.")
|
|
|
|
(opts, _) = parser.parse_args()
|
|
|
|
if opts.commit and opts.diff:
|
|
sys.exit("Please specify only one option at once.")
|
|
|
|
if opts.diff and not re.match(r"^[\w\-\.]+\.\.[\w\-\.]+$", opts.diff):
|
|
sys.exit("Please specify valid input in the following format: "
|
|
"\'commmit1..commit2\'")
|
|
|
|
if opts.commit or opts.diff:
|
|
if not opts.force and tree_is_dirty():
|
|
sys.exit("The current Git tree is dirty (see 'git status'). "
|
|
"Running this script may\ndelete important data since it "
|
|
"calls 'git reset --hard' for some performance\nreasons. "
|
|
" Please run this script in a clean Git tree or pass "
|
|
"'--force' if you\nwant to ignore this warning and "
|
|
"continue.")
|
|
|
|
if opts.commit:
|
|
opts.find = False
|
|
|
|
if opts.ignore:
|
|
try:
|
|
re.match(opts.ignore, "this/is/just/a/test.c")
|
|
except:
|
|
sys.exit("Please specify a valid Python regex.")
|
|
|
|
return opts
|
|
|
|
|
|
def main():
|
|
"""Main function of this module."""
|
|
opts = parse_options()
|
|
|
|
if opts.sim and not opts.commit and not opts.diff:
|
|
sims = find_sims(opts.sim, opts.ignore)
|
|
if sims:
|
|
print "%s: %s" % (yel("Similar symbols"), ', '.join(sims))
|
|
else:
|
|
print "%s: no similar symbols found" % yel("Similar symbols")
|
|
sys.exit(0)
|
|
|
|
# dictionary of (un)defined symbols
|
|
defined = {}
|
|
undefined = {}
|
|
|
|
if opts.commit or opts.diff:
|
|
head = get_head()
|
|
|
|
# get commit range
|
|
commit_a = None
|
|
commit_b = None
|
|
if opts.commit:
|
|
commit_a = opts.commit + "~"
|
|
commit_b = opts.commit
|
|
elif opts.diff:
|
|
split = opts.diff.split("..")
|
|
commit_a = split[0]
|
|
commit_b = split[1]
|
|
undefined_a = {}
|
|
undefined_b = {}
|
|
|
|
# get undefined items before the commit
|
|
execute("git reset --hard %s" % commit_a)
|
|
undefined_a, _ = check_symbols(opts.ignore)
|
|
|
|
# get undefined items for the commit
|
|
execute("git reset --hard %s" % commit_b)
|
|
undefined_b, defined = check_symbols(opts.ignore)
|
|
|
|
# report cases that are present for the commit but not before
|
|
for feature in sorted(undefined_b):
|
|
# feature has not been undefined before
|
|
if not feature in undefined_a:
|
|
files = sorted(undefined_b.get(feature))
|
|
undefined[feature] = files
|
|
# check if there are new files that reference the undefined feature
|
|
else:
|
|
files = sorted(undefined_b.get(feature) -
|
|
undefined_a.get(feature))
|
|
if files:
|
|
undefined[feature] = files
|
|
|
|
# reset to head
|
|
execute("git reset --hard %s" % head)
|
|
|
|
# default to check the entire tree
|
|
else:
|
|
undefined, defined = check_symbols(opts.ignore)
|
|
|
|
# now print the output
|
|
for feature in sorted(undefined):
|
|
print red(feature)
|
|
|
|
files = sorted(undefined.get(feature))
|
|
print "%s: %s" % (yel("Referencing files"), ", ".join(files))
|
|
|
|
sims = find_sims(feature, opts.ignore, defined)
|
|
sims_out = yel("Similar symbols")
|
|
if sims:
|
|
print "%s: %s" % (sims_out, ', '.join(sims))
|
|
else:
|
|
print "%s: %s" % (sims_out, "no similar symbols found")
|
|
|
|
if opts.find:
|
|
print "%s:" % yel("Commits changing symbol")
|
|
commits = find_commits(feature, opts.diff)
|
|
if commits:
|
|
for commit in commits:
|
|
commit = commit.split(" ", 1)
|
|
print "\t- %s (\"%s\")" % (yel(commit[0]), commit[1])
|
|
else:
|
|
print "\t- no commit found"
|
|
print # new line
|
|
|
|
|
|
def yel(string):
|
|
"""
|
|
Color %string yellow.
|
|
"""
|
|
return "\033[33m%s\033[0m" % string
|
|
|
|
|
|
def red(string):
|
|
"""
|
|
Color %string red.
|
|
"""
|
|
return "\033[31m%s\033[0m" % string
|
|
|
|
|
|
def execute(cmd):
|
|
"""Execute %cmd and return stdout. Exit in case of error."""
|
|
pop = Popen(cmd, stdout=PIPE, stderr=STDOUT, shell=True)
|
|
(stdout, _) = pop.communicate() # wait until finished
|
|
if pop.returncode != 0:
|
|
sys.exit(stdout)
|
|
return stdout
|
|
|
|
|
|
def find_commits(symbol, diff):
|
|
"""Find commits changing %symbol in the given range of %diff."""
|
|
commits = execute("git log --pretty=oneline --abbrev-commit -G %s %s"
|
|
% (symbol, diff))
|
|
return [x for x in commits.split("\n") if x]
|
|
|
|
|
|
def tree_is_dirty():
|
|
"""Return true if the current working tree is dirty (i.e., if any file has
|
|
been added, deleted, modified, renamed or copied but not committed)."""
|
|
stdout = execute("git status --porcelain")
|
|
for line in stdout:
|
|
if re.findall(r"[URMADC]{1}", line[:2]):
|
|
return True
|
|
return False
|
|
|
|
|
|
def get_head():
|
|
"""Return commit hash of current HEAD."""
|
|
stdout = execute("git rev-parse HEAD")
|
|
return stdout.strip('\n')
|
|
|
|
|
|
def partition(lst, size):
|
|
"""Partition list @lst into eveni-sized lists of size @size."""
|
|
return [lst[i::size] for i in xrange(size)]
|
|
|
|
|
|
def init_worker():
|
|
"""Set signal handler to ignore SIGINT."""
|
|
signal.signal(signal.SIGINT, signal.SIG_IGN)
|
|
|
|
|
|
def find_sims(symbol, ignore, defined = []):
|
|
"""Return a list of max. ten Kconfig symbols that are string-similar to
|
|
@symbol."""
|
|
if defined:
|
|
return sorted(difflib.get_close_matches(symbol, set(defined), 10))
|
|
|
|
pool = Pool(cpu_count(), init_worker)
|
|
kfiles = []
|
|
for gitfile in get_files():
|
|
if REGEX_FILE_KCONFIG.match(gitfile):
|
|
kfiles.append(gitfile)
|
|
|
|
arglist = []
|
|
for part in partition(kfiles, cpu_count()):
|
|
arglist.append((part, ignore))
|
|
|
|
for res in pool.map(parse_kconfig_files, arglist):
|
|
defined.extend(res[0])
|
|
|
|
return sorted(difflib.get_close_matches(symbol, set(defined), 10))
|
|
|
|
|
|
def get_files():
|
|
"""Return a list of all files in the current git directory."""
|
|
# use 'git ls-files' to get the worklist
|
|
stdout = execute("git ls-files")
|
|
if len(stdout) > 0 and stdout[-1] == "\n":
|
|
stdout = stdout[:-1]
|
|
|
|
files = []
|
|
for gitfile in stdout.rsplit("\n"):
|
|
if ".git" in gitfile or "ChangeLog" in gitfile or \
|
|
".log" in gitfile or os.path.isdir(gitfile) or \
|
|
gitfile.startswith("tools/"):
|
|
continue
|
|
files.append(gitfile)
|
|
return files
|
|
|
|
|
|
def check_symbols(ignore):
|
|
"""Find undefined Kconfig symbols and return a dict with the symbol as key
|
|
and a list of referencing files as value. Files matching %ignore are not
|
|
checked for undefined symbols."""
|
|
pool = Pool(cpu_count(), init_worker)
|
|
try:
|
|
return check_symbols_helper(pool, ignore)
|
|
except KeyboardInterrupt:
|
|
pool.terminate()
|
|
pool.join()
|
|
sys.exit(1)
|
|
|
|
|
|
def check_symbols_helper(pool, ignore):
|
|
"""Helper method for check_symbols(). Used to catch keyboard interrupts in
|
|
check_symbols() in order to properly terminate running worker processes."""
|
|
source_files = []
|
|
kconfig_files = []
|
|
defined_features = []
|
|
referenced_features = dict() # {file: [features]}
|
|
|
|
for gitfile in get_files():
|
|
if REGEX_FILE_KCONFIG.match(gitfile):
|
|
kconfig_files.append(gitfile)
|
|
else:
|
|
if ignore and not re.match(ignore, gitfile):
|
|
continue
|
|
# add source files that do not match the ignore pattern
|
|
source_files.append(gitfile)
|
|
|
|
# parse source files
|
|
arglist = partition(source_files, cpu_count())
|
|
for res in pool.map(parse_source_files, arglist):
|
|
referenced_features.update(res)
|
|
|
|
|
|
# parse kconfig files
|
|
arglist = []
|
|
for part in partition(kconfig_files, cpu_count()):
|
|
arglist.append((part, ignore))
|
|
for res in pool.map(parse_kconfig_files, arglist):
|
|
defined_features.extend(res[0])
|
|
referenced_features.update(res[1])
|
|
defined_features = set(defined_features)
|
|
|
|
# inverse mapping of referenced_features to dict(feature: [files])
|
|
inv_map = dict()
|
|
for _file, features in referenced_features.iteritems():
|
|
for feature in features:
|
|
inv_map[feature] = inv_map.get(feature, set())
|
|
inv_map[feature].add(_file)
|
|
referenced_features = inv_map
|
|
|
|
undefined = {} # {feature: [files]}
|
|
for feature in sorted(referenced_features):
|
|
# filter some false positives
|
|
if feature == "FOO" or feature == "BAR" or \
|
|
feature == "FOO_BAR" or feature == "XXX":
|
|
continue
|
|
if feature not in defined_features:
|
|
if feature.endswith("_MODULE"):
|
|
# avoid false positives for kernel modules
|
|
if feature[:-len("_MODULE")] in defined_features:
|
|
continue
|
|
undefined[feature] = referenced_features.get(feature)
|
|
return undefined, defined_features
|
|
|
|
|
|
def parse_source_files(source_files):
|
|
"""Parse each source file in @source_files and return dictionary with source
|
|
files as keys and lists of references Kconfig symbols as values."""
|
|
referenced_features = dict()
|
|
for sfile in source_files:
|
|
referenced_features[sfile] = parse_source_file(sfile)
|
|
return referenced_features
|
|
|
|
|
|
def parse_source_file(sfile):
|
|
"""Parse @sfile and return a list of referenced Kconfig features."""
|
|
lines = []
|
|
references = []
|
|
|
|
if not os.path.exists(sfile):
|
|
return references
|
|
|
|
with open(sfile, "r") as stream:
|
|
lines = stream.readlines()
|
|
|
|
for line in lines:
|
|
if not "CONFIG_" in line:
|
|
continue
|
|
features = REGEX_SOURCE_FEATURE.findall(line)
|
|
for feature in features:
|
|
if not REGEX_FILTER_FEATURES.search(feature):
|
|
continue
|
|
references.append(feature)
|
|
|
|
return references
|
|
|
|
|
|
def get_features_in_line(line):
|
|
"""Return mentioned Kconfig features in @line."""
|
|
return REGEX_FEATURE.findall(line)
|
|
|
|
|
|
def parse_kconfig_files(args):
|
|
"""Parse kconfig files and return tuple of defined and references Kconfig
|
|
symbols. Note, @args is a tuple of a list of files and the @ignore
|
|
pattern."""
|
|
kconfig_files = args[0]
|
|
ignore = args[1]
|
|
defined_features = []
|
|
referenced_features = dict()
|
|
|
|
for kfile in kconfig_files:
|
|
defined, references = parse_kconfig_file(kfile)
|
|
defined_features.extend(defined)
|
|
if ignore and re.match(ignore, kfile):
|
|
# do not collect references for files that match the ignore pattern
|
|
continue
|
|
referenced_features[kfile] = references
|
|
return (defined_features, referenced_features)
|
|
|
|
|
|
def parse_kconfig_file(kfile):
|
|
"""Parse @kfile and update feature definitions and references."""
|
|
lines = []
|
|
defined = []
|
|
references = []
|
|
skip = False
|
|
|
|
if not os.path.exists(kfile):
|
|
return defined, references
|
|
|
|
with open(kfile, "r") as stream:
|
|
lines = stream.readlines()
|
|
|
|
for i in range(len(lines)):
|
|
line = lines[i]
|
|
line = line.strip('\n')
|
|
line = line.split("#")[0] # ignore comments
|
|
|
|
if REGEX_KCONFIG_DEF.match(line):
|
|
feature_def = REGEX_KCONFIG_DEF.findall(line)
|
|
defined.append(feature_def[0])
|
|
skip = False
|
|
elif REGEX_KCONFIG_HELP.match(line):
|
|
skip = True
|
|
elif skip:
|
|
# ignore content of help messages
|
|
pass
|
|
elif REGEX_KCONFIG_STMT.match(line):
|
|
line = REGEX_QUOTES.sub("", line)
|
|
features = get_features_in_line(line)
|
|
# multi-line statements
|
|
while line.endswith("\\"):
|
|
i += 1
|
|
line = lines[i]
|
|
line = line.strip('\n')
|
|
features.extend(get_features_in_line(line))
|
|
for feature in set(features):
|
|
if REGEX_NUMERIC.match(feature):
|
|
# ignore numeric values
|
|
continue
|
|
references.append(feature)
|
|
|
|
return defined, references
|
|
|
|
|
|
if __name__ == "__main__":
|
|
main()
|