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#!/usr/bin/env python3
#
# Copyright (c) 2011, Intel Corporation.
#
# SPDX-License-Identifier: GPL-2.0-or-later
#
# Display details of the kernel build size, broken up by built-in.o. Sort
# the objects by size. Run from the top level kernel build directory.
#
# Author: Darren Hart <dvhart@linux.intel.com>
#
import sys
import getopt
import os
from subprocess import *
def usage():
prog = os.path.basename(sys.argv[0])
print('Usage: %s [OPTION]...' % prog)
print(' -d, display an additional level of drivers detail')
print(' -h, --help display this help and exit')
print('')
print('Run %s from the top-level Linux kernel build directory.' % prog)
class Sizes:
def __init__(self, glob):
self.title = glob
p = Popen("size -t " + str(glob), shell=True, stdout=PIPE, stderr=PIPE)
output = p.communicate()[0].splitlines()
if len(output) > 2:
sizes = output[-1].split()[0:4]
self.text = int(sizes[0])
self.data = int(sizes[1])
self.bss = int(sizes[2])
self.total = int(sizes[3])
else:
self.text = self.data = self.bss = self.total = 0
def show(self, indent=""):
print("%-32s %10d | %10d %10d %10d" % \
(indent+self.title, self.total, self.text, self.data, self.bss))
class Report:
def create(filename, title, subglob=None):
r = Report(filename, title)
path = os.path.dirname(filename)
p = Popen("ls " + str(path) + "/*.o | grep -v built-in.o",
shell=True, stdout=PIPE, stderr=PIPE)
glob = ' '.join(p.communicate()[0].splitlines())
oreport = Report(glob, str(path) + "/*.o")
oreport.sizes.title = str(path) + "/*.o"
r.parts.append(oreport)
if subglob:
p = Popen("ls " + subglob, shell=True, stdout=PIPE, stderr=PIPE)
for f in p.communicate()[0].splitlines():
path = os.path.dirname(f)
r.parts.append(Report.create(f, path, str(path) + "/*/built-in.o"))
r.parts.sort(reverse=True)
for b in r.parts:
r.totals["total"] += b.sizes.total
r.totals["text"] += b.sizes.text
r.totals["data"] += b.sizes.data
r.totals["bss"] += b.sizes.bss
r.deltas["total"] = r.sizes.total - r.totals["total"]
r.deltas["text"] = r.sizes.text - r.totals["text"]
r.deltas["data"] = r.sizes.data - r.totals["data"]
r.deltas["bss"] = r.sizes.bss - r.totals["bss"]
return r
create = staticmethod(create)
def __init__(self, glob, title):
self.glob = glob
self.title = title
self.sizes = Sizes(glob)
self.parts = []
self.totals = {"total":0, "text":0, "data":0, "bss":0}
self.deltas = {"total":0, "text":0, "data":0, "bss":0}
def show(self, indent=""):
rule = str.ljust(indent, 80, '-')
print("%-32s %10s | %10s %10s %10s" % \
(indent+self.title, "total", "text", "data", "bss"))
print(rule)
self.sizes.show(indent)
print(rule)
for p in self.parts:
if p.sizes.total > 0:
p.sizes.show(indent)
print(rule)
print("%-32s %10d | %10d %10d %10d" % \
(indent+"sum", self.totals["total"], self.totals["text"],
self.totals["data"], self.totals["bss"]))
print("%-32s %10d | %10d %10d %10d" % \
(indent+"delta", self.deltas["total"], self.deltas["text"],
self.deltas["data"], self.deltas["bss"]))
print("\n")
def __lt__(this, that):
if that is None:
return 1
if not isinstance(that, Report):
raise TypeError
return this.sizes.total < that.sizes.total
def __cmp__(this, that):
if that is None:
return 1
if not isinstance(that, Report):
raise TypeError
if this.sizes.total < that.sizes.total:
return -1
if this.sizes.total > that.sizes.total:
return 1
return 0
def main():
try:
opts, args = getopt.getopt(sys.argv[1:], "dh", ["help"])
except getopt.GetoptError as err:
print('%s' % str(err))
usage()
sys.exit(2)
driver_detail = False
for o, a in opts:
if o == '-d':
driver_detail = True
elif o in ('-h', '--help'):
usage()
sys.exit(0)
else:
assert False, "unhandled option"
glob = "arch/*/built-in.o */built-in.o"
vmlinux = Report.create("vmlinux", "Linux Kernel", glob)
vmlinux.show()
for b in vmlinux.parts:
if b.totals["total"] > 0 and len(b.parts) > 1:
b.show()
if b.title == "drivers" and driver_detail:
for d in b.parts:
if d.totals["total"] > 0 and len(d.parts) > 1:
d.show(" ")
if __name__ == "__main__":
main()
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