2020-12-09 14:50:17 +03:00
#!/usr/bin/env python3
2006-01-08 12:05:19 +03:00
#
# 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.
2022-07-01 14:35:12 +03:00
import sys, os, re, argparse
2016-11-10 21:46:13 +03:00
from signal import signal, SIGPIPE, SIG_DFL
signal(SIGPIPE, SIG_DFL)
2006-01-08 12:05:19 +03:00
2022-07-01 14:35:12 +03:00
parser = argparse.ArgumentParser(description="Simple script used to compare the symbol sizes of 2 object files")
group = parser.add_mutually_exclusive_group()
group.add_argument('-c', help='categorize output based on symbol type', action='store_true')
group.add_argument('-d', help='Show delta of Data Section', action='store_true')
group.add_argument('-t', help='Show delta of text Section', action='store_true')
2022-07-01 14:35:13 +03:00
parser.add_argument('-p', dest='prefix', help='Arch prefix for the tool being used. Useful in cross build scenarios')
2022-07-01 14:35:12 +03:00
parser.add_argument('file1', help='First file to compare')
parser.add_argument('file2', help='Second file to compare')
args = parser.parse_args()
2006-01-08 12:05:19 +03:00
2016-12-13 03:40:48 +03:00
re_NUMBER = re.compile(r'\.[0-9]+')
2017-11-16 04:31:14 +03:00
def getsizes(file, format):
2006-01-08 12:05:19 +03:00
sym = {}
2022-07-01 14:35:13 +03:00
nm = "nm"
if args.prefix:
nm = "{}nm".format(args.prefix)
with os.popen("{} --size-sort {}".format(nm, file)) as f:
2016-12-13 03:40:45 +03:00
for line in f:
2020-08-07 09:17:32 +03:00
if line.startswith("\n") or ":" in line:
continue
2016-12-13 03:40:45 +03:00
size, type, name = line.split()
2017-11-16 04:31:14 +03:00
if type in format:
2016-12-13 03:40:45 +03:00
# strip generated symbols
if name.startswith("__mod_"): continue
2018-04-09 13:51:42 +03:00
if name.startswith("__se_sys"): continue
syscalls/core, syscalls/x86: Clean up compat syscall stub naming convention
Tidy the naming convention for compat syscall subs. Hints which describe
the purpose of the stub go in front and receive a double underscore to
denote that they are generated on-the-fly by the COMPAT_SYSCALL_DEFINEx()
macro.
For the generic case, this means:
t kernel_waitid # common C function (see kernel/exit.c)
__do_compat_sys_waitid # inlined helper doing the actual work
# (takes original parameters as declared)
T __se_compat_sys_waitid # sign-extending C function calling inlined
# helper (takes parameters of type long,
# casts them to unsigned long and then to
# the declared type)
T compat_sys_waitid # alias to __se_compat_sys_waitid()
# (taking parameters as declared), to
# be included in syscall table
For x86, the naming is as follows:
t kernel_waitid # common C function (see kernel/exit.c)
__do_compat_sys_waitid # inlined helper doing the actual work
# (takes original parameters as declared)
t __se_compat_sys_waitid # sign-extending C function calling inlined
# helper (takes parameters of type long,
# casts them to unsigned long and then to
# the declared type)
T __ia32_compat_sys_waitid # IA32_EMULATION 32-bit-ptregs -> C stub,
# calls __se_compat_sys_waitid(); to be
# included in syscall table
T __x32_compat_sys_waitid # x32 64-bit-ptregs -> C stub, calls
# __se_compat_sys_waitid(); to be included
# in syscall table
If only one of IA32_EMULATION and x32 is enabled, __se_compat_sys_waitid()
may be inlined into the stub __{ia32,x32}_compat_sys_waitid().
Suggested-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20180409105145.5364-3-linux@dominikbrodowski.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-04-09 13:51:43 +03:00
if name.startswith("__se_compat_sys"): continue
2018-12-28 11:31:18 +03:00
if name.startswith("__addressable_"): continue
2016-12-13 03:40:45 +03:00
if name == "linux_banner": continue
2022-04-30 00:37:57 +03:00
if name == "vermagic": continue
2016-12-13 03:40:45 +03:00
# statics and some other optimizations adds random .NUMBER
2016-12-13 03:40:48 +03:00
name = re_NUMBER.sub('', name)
2016-12-13 03:40:45 +03:00
sym[name] = sym.get(name, 0) + int(size, 16)
2006-01-08 12:05:19 +03:00
return sym
2017-11-16 04:31:14 +03:00
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
2006-01-08 12:05:19 +03:00
2017-11-16 04:31:14 +03:00
for a in old:
if a in new:
common[a] = 1
2006-01-08 12:05:19 +03:00
2017-11-16 04:31:14 +03:00
for name in old:
otot += old[name]
if name not in common:
remove += 1
down += old[name]
delta.append((-old[name], name))
2006-01-08 12:05:19 +03:00
2017-11-16 04:31:14 +03:00
for name in new:
ntot += new[name]
if name not in common:
add += 1
up += new[name]
delta.append((new[name], name))
2006-01-08 12:05:19 +03:00
2017-11-16 04:31:14 +03:00
for name in common:
2006-01-08 12:05:19 +03:00
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))
2023-01-06 12:13:19 +03:00
delta.sort(reverse=True)
2017-11-16 04:31:14 +03:00
return grow, shrink, add, remove, up, down, delta, old, new, otot, ntot
2006-01-08 12:05:19 +03:00
2022-07-01 14:35:12 +03:00
def print_result(symboltype, symbolformat):
2017-11-16 04:31:14 +03:00
grow, shrink, add, remove, up, down, delta, old, new, otot, ntot = \
2022-07-01 14:35:12 +03:00
calc(args.file1, args.file2, symbolformat)
2016-05-20 03:09:17 +03:00
2017-11-16 04:31:14 +03:00
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))
2017-11-30 03:11:05 +03:00
if otot:
percent = (ntot - otot) * 100.0 / otot
else:
percent = 0
print("Total: Before=%d, After=%d, chg %+.2f%%" % (otot, ntot, percent))
2017-11-16 04:31:14 +03:00
2022-07-01 14:35:12 +03:00
if args.c:
print_result("Function", "tT")
print_result("Data", "dDbB")
print_result("RO Data", "rR")
elif args.d:
print_result("Data", "dDbBrR")
elif args.t:
print_result("Function", "tT")
2017-11-16 04:31:14 +03:00
else:
2022-07-01 14:35:12 +03:00
print_result("Function", "tTdDbBrR")