aboutsummaryrefslogtreecommitdiffstats
path: root/scripts/tiny/ksum.py
blob: f38ae055dbfccafcabea33b6b51fea9ed2e060e1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
#!/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)