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#!/usr/bin/env python
#
# Copyright (c) 2016, Intel Corporation.
#
# SPDX-License-Identifier: GPL-2.0-only
#
# DESCRIPTION 'ksum.py' generates a combined summary of vmlinux and
# module sizes for a built kernel, as a quick tool for comparing the
# overall effects of systemic tinification changes. Execute from the
# base directory of the kernel build you want to summarize. Setting
# the 'verbose' flag will display the sizes for each file included in
# the summary.
#
# AUTHORS
# Tom Zanussi <tom.zanussi (at] linux.intel.com>
#
__version__ = "0.1.0"
# Python Standard Library modules
import os
import sys
import getopt
from subprocess import *
def usage():
prog = os.path.basename(sys.argv[0])
print('Usage: %s [OPTION]...' % prog)
print(' -v, display sizes for each file')
print(' -h, --help display this help and exit')
print('')
print('Run %s from the top-level Linux kernel build directory.' % prog)
verbose = False
n_ko_files = 0
ko_file_list = []
ko_text = 0
ko_data = 0
ko_bss = 0
ko_total = 0
vmlinux_file = ""
vmlinux_level = 0
vmlinux_text = 0
vmlinux_data = 0
vmlinux_bss = 0
vmlinux_total = 0
def is_vmlinux_file(filename):
global vmlinux_level
if filename == ("vmlinux") and vmlinux_level == 0:
vmlinux_level += 1
return True
return False
def is_ko_file(filename):
if filename.endswith(".ko"):
return True
return False
def collect_object_files():
print "Collecting object files recursively from %s..." % os.getcwd()
for dirpath, dirs, files in os.walk(os.getcwd()):
for filename in files:
if is_ko_file(filename):
ko_file_list.append(os.path.join(dirpath, filename))
elif is_vmlinux_file(filename):
global vmlinux_file
vmlinux_file = os.path.join(dirpath, filename)
print "Collecting object files [DONE]"
def add_ko_file(filename):
p = Popen("size -t " + filename, shell=True, stdout=PIPE, stderr=PIPE)
output = p.communicate()[0].splitlines()
if len(output) > 2:
sizes = output[-1].split()[0:4]
if verbose:
print " %10d %10d %10d %10d\t" % \
(int(sizes[0]), int(sizes[1]), int(sizes[2]), int(sizes[3])),
print "%s" % filename[len(os.getcwd()) + 1:]
global n_ko_files, ko_text, ko_data, ko_bss, ko_total
ko_text += int(sizes[0])
ko_data += int(sizes[1])
ko_bss += int(sizes[2])
ko_total += int(sizes[3])
n_ko_files += 1
def get_vmlinux_totals():
p = Popen("size -t " + vmlinux_file, shell=True, stdout=PIPE, stderr=PIPE)
output = p.communicate()[0].splitlines()
if len(output) > 2:
sizes = output[-1].split()[0:4]
if verbose:
print " %10d %10d %10d %10d\t" % \
(int(sizes[0]), int(sizes[1]), int(sizes[2]), int(sizes[3])),
print "%s" % vmlinux_file[len(os.getcwd()) + 1:]
global vmlinux_text, vmlinux_data, vmlinux_bss, vmlinux_total
vmlinux_text += int(sizes[0])
vmlinux_data += int(sizes[1])
vmlinux_bss += int(sizes[2])
vmlinux_total += int(sizes[3])
def sum_ko_files():
for ko_file in ko_file_list:
add_ko_file(ko_file)
def main():
try:
opts, args = getopt.getopt(sys.argv[1:], "vh", ["help"])
except getopt.GetoptError as err:
print('%s' % str(err))
usage()
sys.exit(2)
for o, a in opts:
if o == '-v':
global verbose
verbose = True
elif o in ('-h', '--help'):
usage()
sys.exit(0)
else:
assert False, "unhandled option"
collect_object_files()
sum_ko_files()
get_vmlinux_totals()
print "\nTotals:"
print "\nvmlinux:"
print " text\tdata\t\tbss\t\ttotal"
print " %-10d\t%-10d\t%-10d\t%-10d" % \
(vmlinux_text, vmlinux_data, vmlinux_bss, vmlinux_total)
print "\nmodules (%d):" % n_ko_files
print " text\tdata\t\tbss\t\ttotal"
print " %-10d\t%-10d\t%-10d\t%-10d" % \
(ko_text, ko_data, ko_bss, ko_total)
print "\nvmlinux + modules:"
print " text\tdata\t\tbss\t\ttotal"
print " %-10d\t%-10d\t%-10d\t%-10d" % \
(vmlinux_text + ko_text, vmlinux_data + ko_data, \
vmlinux_bss + ko_bss, vmlinux_total + ko_total)
if __name__ == "__main__":
try:
ret = main()
except Exception:
ret = 1
import traceback
traceback.print_exc(5)
sys.exit(ret)
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