]>
git.ipfire.org Git - thirdparty/linux.git/blob - scripts/bloat-o-meter
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
, argparse
11 from signal
import signal
, SIGPIPE
, SIG_DFL
13 signal(SIGPIPE
, SIG_DFL
)
15 parser
= argparse
.ArgumentParser(description
="Simple script used to compare the symbol sizes of 2 object files")
16 group
= parser
.add_mutually_exclusive_group()
17 group
.add_argument('-c', help='categorize output based on symbol type', action
='store_true')
18 group
.add_argument('-d', help='Show delta of Data Section', action
='store_true')
19 group
.add_argument('-t', help='Show delta of text Section', action
='store_true')
20 parser
.add_argument('-p', dest
='prefix', help='Arch prefix for the tool being used. Useful in cross build scenarios')
21 parser
.add_argument('file1', help='First file to compare')
22 parser
.add_argument('file2', help='Second file to compare')
24 args
= parser
.parse_args()
26 re_NUMBER
= re
.compile(r
'\.[0-9]+')
28 def getsizes(file, format
):
32 nm
= "{}nm".format(args
.prefix
)
34 with os
.popen("{} --size-sort {}".format(nm
, file)) as f
:
36 if line
.startswith("\n") or ":" in line
:
38 size
, type, name
= line
.split()
40 # strip generated symbols
41 if name
.startswith("__mod_"): continue
42 if name
.startswith("__se_sys"): continue
43 if name
.startswith("__se_compat_sys"): continue
44 if name
.startswith("__addressable_"): continue
45 if name
== "linux_banner": continue
46 if name
== "vermagic": continue
47 # statics and some other optimizations adds random .NUMBER
48 name
= re_NUMBER
.sub('', name
)
49 sym
[name
] = sym
.get(name
, 0) + int(size
, 16)
52 def calc(oldfile
, newfile
, format
):
53 old
= getsizes(oldfile
, format
)
54 new
= getsizes(newfile
, format
)
55 grow
, shrink
, add
, remove
, up
, down
= 0, 0, 0, 0, 0, 0
56 delta
, common
= [], {}
65 if name
not in common
:
68 delta
.append((-old
[name
], name
))
72 if name
not in common
:
75 delta
.append((new
[name
], name
))
78 d
= new
.get(name
, 0) - old
.get(name
, 0)
79 if d
>0: grow
, up
= grow
+1, up
+d
80 if d
<0: shrink
, down
= shrink
+1, down
-d
81 delta
.append((d
, name
))
83 delta
.sort(reverse
=True)
84 return grow
, shrink
, add
, remove
, up
, down
, delta
, old
, new
, otot
, ntot
86 def print_result(symboltype
, symbolformat
):
87 grow
, shrink
, add
, remove
, up
, down
, delta
, old
, new
, otot
, ntot
= \
88 calc(args
.file1
, args
.file2
, symbolformat
)
90 print("add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \
91 (add
, remove
, grow
, shrink
, up
, -down
, up
-down
))
92 print("%-40s %7s %7s %+7s" % (symboltype
, "old", "new", "delta"))
94 if d
: print("%-40s %7s %7s %+7d" % (n
, old
.get(n
,"-"), new
.get(n
,"-"), d
))
97 percent
= (ntot
- otot
) * 100.0 / otot
100 print("Total: Before=%d, After=%d, chg %+.2f%%" % (otot
, ntot
, percent
))
103 print_result("Function", "tTwW")
104 print_result("Data", "dDbBvV")
105 print_result("RO Data", "rR")
107 print_result("Data", "dDbBrRvV")
109 print_result("Function", "tTwW")
111 print_result("Function", "tTdDbBrRvVwW")