1d35b6054a
Library archives (.a) usually contain multiple object files so their output of nm --size-sort contains lines like: <omitted for brevity> 00000000000003a8 t run_test extent-map-tests.o: <omitted for brevity> bloat-o-meter currently doesn't handle them which results in errors when calling .split() on them. Fix this by simply ignoring them. This enables diffing subsystems which generate built-in.a files. Signed-off-by: Nikolay Borisov <nborisov@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/20200603103513.3712-1-nborisov@suse.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3.4 KiB
Executable File
#!/usr/bin/python
Copyright 2004 Matt Mackall mpm@selenic.com
inspired by perl Bloat-O-Meter (c) 1997 by Andi Kleen
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 from signal import signal, SIGPIPE, SIG_DFL
signal(SIGPIPE, SIG_DFL)
if len(sys.argv) < 3: sys.stderr.write("usage: %s [option] file1 file2\n" % sys.argv[0]) sys.stderr.write("The options are:\n") sys.stderr.write("-c categorize output based on symbol type\n") sys.stderr.write("-d Show delta of Data Section\n") sys.stderr.write("-t Show delta of text Section\n") sys.exit(-1)
re_NUMBER = re.compile(r'.[0-9]+')
def getsizes(file, format): sym = {} with os.popen("nm --size-sort " + file) as f: for line in f: if line.startswith("\n") or ":" in line: continue size, type, name = line.split() if type in format: # strip generated symbols if name.startswith("_mod"): continue if name.startswith("__se_sys"): continue if name.startswith("__se_compat_sys"): continue if name.startswith("_addressable"): continue if name == "linux_banner": continue # statics and some other optimizations adds random .NUMBER name = re_NUMBER.sub('', name) sym[name] = sym.get(name, 0) + int(size, 16) return sym
def calc(oldfile, newfile, format): old = getsizes(oldfile, format) new = getsizes(newfile, format) grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0 delta, common = [], {} otot, ntot = 0, 0
for a in old:
if a in new:
common[a] = 1
for name in old:
otot += old[name]
if name not in common:
remove += 1
down += old[name]
delta.append((-old[name], name))
for name in new:
ntot += new[name]
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()
return grow, shrink, add, remove, up, down, delta, old, new, otot, ntot
def print_result(symboltype, symbolformat, argc):
grow, shrink, add, remove, up, down, delta, old, new, otot, ntot =
calc(sys.argv[argc - 1], sys.argv[argc], symbolformat)
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" % (symboltype, "old", "new", "delta"))
for d, n in delta:
if d: print("%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d))
if otot:
percent = (ntot - otot) * 100.0 / otot
else:
percent = 0
print("Total: Before=%d, After=%d, chg %+.2f%%" % (otot, ntot, percent))
if sys.argv[1] == "-c": print_result("Function", "tT", 3) print_result("Data", "dDbB", 3) print_result("RO Data", "rR", 3) elif sys.argv[1] == "-d": print_result("Data", "dDbBrR", 3) elif sys.argv[1] == "-t": print_result("Function", "tT", 3) else: print_result("Function", "tTdDbBrR", 2)