SmartisanOS_Kernel_Source/scripts/bloat-o-meter at master · coolsnake/SmartisanOS_Kernel_Source · GitHub

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#!/usr/bin/python

# This software may be used and distributed according to the terms

# of the GNU General Public License, incorporated herein by reference.

import sys, os, re

if len(sys.argv) != 3:

sys.stderr.write("usage: %s file1 file2\n" % sys.argv[0])

sys.exit(-1)

def getsizes(file):

sym = {}

for l in os.popen("nm --size-sort " + file).readlines():

size, type, name = l[:-1].split()

if type in "tTdDbBrR":

# strip generated symbols

if name[:6] == "__mod_": continue

# function names begin with '.' on 64-bit powerpc

if "." in name[1:]: name = "static." + name.split(".")[0]

sym[name] = sym.get(name, 0) + int(size, 16)

return sym

old = getsizes(sys.argv[1])

new = getsizes(sys.argv[2])

grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0

delta, common = [], {}

for a in old:

if a in new:

common[a] = 1

for name in old:

if name not in common:

remove += 1

down += old[name]

delta.append((-old[name], name))

for name in new:

if name not in common:

add += 1

up += new[name]

delta.append((new[name], name))

for name in common:

d = new.get(name, 0) - old.get(name, 0)

if d>0: grow, up = grow+1, up+d

if d<0: shrink, down = shrink+1, down-d

delta.append((d, name))

delta.sort()

delta.reverse()

print "add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \

(add, remove, grow, shrink, up, -down, up-down)

print "%-40s %7s %7s %+7s" % ("function", "old", "new", "delta")

for d, n in delta:

if d: print "%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d)

SmartisanOS_Kernel_Source/scripts/bloat-o-meter at master · coolsnake/SmartisanOS_Kernel_Source · GitHub

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