Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus
[linux-btrfs-devel.git] / scripts / bloat-o-meter
blob6129020c41a94570ff49f5e42b5963a23105ba8e
1 #!/usr/bin/python
3 # Copyright 2004 Matt Mackall <mpm@selenic.com>
5 # inspired by perl Bloat-O-Meter (c) 1997 by Andi Kleen
7 # This software may be used and distributed according to the terms
8 # of the GNU General Public License, incorporated herein by reference.
10 import sys, os, re
12 if len(sys.argv) != 3:
13 sys.stderr.write("usage: %s file1 file2\n" % sys.argv[0])
14 sys.exit(-1)
16 def getsizes(file):
17 sym = {}
18 for l in os.popen("nm --size-sort " + file).readlines():
19 size, type, name = l[:-1].split()
20 if type in "tTdDbBrR":
21 # strip generated symbols
22 if name[:6] == "__mod_": continue
23 # function names begin with '.' on 64-bit powerpc
24 if "." in name[1:]: name = "static." + name.split(".")[0]
25 sym[name] = sym.get(name, 0) + int(size, 16)
26 return sym
28 old = getsizes(sys.argv[1])
29 new = getsizes(sys.argv[2])
30 grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0
31 delta, common = [], {}
33 for a in old:
34 if a in new:
35 common[a] = 1
37 for name in old:
38 if name not in common:
39 remove += 1
40 down += old[name]
41 delta.append((-old[name], name))
43 for name in new:
44 if name not in common:
45 add += 1
46 up += new[name]
47 delta.append((new[name], name))
49 for name in common:
50 d = new.get(name, 0) - old.get(name, 0)
51 if d>0: grow, up = grow+1, up+d
52 if d<0: shrink, down = shrink+1, down-d
53 delta.append((d, name))
55 delta.sort()
56 delta.reverse()
58 print "add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \
59 (add, remove, grow, shrink, up, -down, up-down)
60 print "%-40s %7s %7s %+7s" % ("function", "old", "new", "delta")
61 for d, n in delta:
62 if d: print "%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d)