c2e182fab0
str.startswith has existed since at least Python 2.0, in 2000; use it rather than a fragile comparison against an initial slice of a string, which requires hard-coding the length of the string to compare against. Signed-off-by: Josh Triplett <josh@joshtriplett.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Michal Marek <mmarek@suse.cz>
63 lines
1.8 KiB
Python
Executable file
63 lines
1.8 KiB
Python
Executable file
#!/usr/bin/python
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#
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# Copyright 2004 Matt Mackall <mpm@selenic.com>
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#
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# inspired by perl Bloat-O-Meter (c) 1997 by Andi Kleen
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#
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# This software may be used and distributed according to the terms
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# of the GNU General Public License, incorporated herein by reference.
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import sys, os, re
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if len(sys.argv) != 3:
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sys.stderr.write("usage: %s file1 file2\n" % sys.argv[0])
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sys.exit(-1)
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def getsizes(file):
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sym = {}
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for l in os.popen("nm --size-sort " + file).readlines():
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size, type, name = l[:-1].split()
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if type in "tTdDbBrR":
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# strip generated symbols
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if name.startswith("__mod_"): continue
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if name == "linux_banner": continue
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# statics and some other optimizations adds random .NUMBER
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name = re.sub(r'\.[0-9]+', '', name)
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sym[name] = sym.get(name, 0) + int(size, 16)
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return sym
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old = getsizes(sys.argv[1])
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new = getsizes(sys.argv[2])
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grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0
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delta, common = [], {}
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for a in old:
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if a in new:
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common[a] = 1
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for name in old:
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if name not in common:
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remove += 1
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down += old[name]
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delta.append((-old[name], name))
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for name in new:
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if name not in common:
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add += 1
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up += new[name]
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delta.append((new[name], name))
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for name in common:
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d = new.get(name, 0) - old.get(name, 0)
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if d>0: grow, up = grow+1, up+d
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if d<0: shrink, down = shrink+1, down-d
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delta.append((d, name))
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delta.sort()
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delta.reverse()
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print "add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \
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(add, remove, grow, shrink, up, -down, up-down)
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print "%-40s %7s %7s %+7s" % ("function", "old", "new", "delta")
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for d, n in delta:
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if d: print "%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d)
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