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+#!/usr/bin/env python
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+#
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+# Copyright (c) 2011, Intel Corporation.
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+# All rights reserved.
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+#
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+# This program is free software; you can redistribute it and/or modify
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+# it under the terms of the GNU General Public License as published by
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+# the Free Software Foundation; either version 2 of the License, or
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+# (at your option) any later version.
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+#
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+# This program is distributed in the hope that it will be useful,
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+# but WITHOUT ANY WARRANTY; without even the implied warranty of
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+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+# GNU General Public License for more details.
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+#
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+# You should have received a copy of the GNU General Public License
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+# along with this program; if not, write to the Free Software
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+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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+#
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+#
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+# Display details of the kernel build size, broken up by built-in.o. Sort
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+# the objects by size. Run from the top level kernel build directory.
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+#
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+# Author: Darren Hart <dvhart@linux.intel.com>
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+#
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+
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+import sys
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+import getopt
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+import os
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+from subprocess import *
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+from string import join
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+
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+
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+def usage():
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+ prog = os.path.basename(sys.argv[0])
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+ print 'Usage: %s [OPTION]...' % (prog)
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+ print ' -d, display an additional level of drivers detail'
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+ print ' -h, --help display this help and exit'
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+ print ''
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+ print 'Run %s from the top-level Linux kernel build directory.' % (prog)
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+
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+
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+class Sizes:
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+ def __init__(self, glob):
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+ self.title = glob
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+ p = Popen("size -t " + glob, shell=True, stdout=PIPE, stderr=PIPE)
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+ output = p.communicate()[0].splitlines()
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+ if len(output) > 2:
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+ sizes = output[-1].split()[0:4]
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+ self.text = int(sizes[0])
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+ self.data = int(sizes[1])
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+ self.bss = int(sizes[2])
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+ self.total = int(sizes[3])
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+ else:
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+ self.text = self.data = self.bss = self.total = 0
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+
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+ def show(self, indent=""):
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+ print "%-32s %10d | %10d %10d %10d" % \
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+ (indent+self.title, self.total, self.text, self.data, self.bss)
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+
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+
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+class Report:
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+ def create(filename, title, subglob=None):
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+ r = Report(filename, title)
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+ path = os.path.dirname(filename)
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+
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+ p = Popen("ls " + path + "/*.o | grep -v built-in.o",
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+ shell=True, stdout=PIPE, stderr=PIPE)
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+ glob = join(p.communicate()[0].splitlines())
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+ oreport = Report(glob, path + "/*.o")
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+ oreport.sizes.title = path + "/*.o"
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+ r.parts.append(oreport)
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+
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+ if subglob:
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+ p = Popen("ls " + subglob, shell=True, stdout=PIPE, stderr=PIPE)
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+ for f in p.communicate()[0].splitlines():
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+ path = os.path.dirname(f)
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+ r.parts.append(Report.create(f, path, path + "/*/built-in.o"))
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+ r.parts.sort(reverse=True)
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+
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+ for b in r.parts:
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+ r.totals["total"] += b.sizes.total
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+ r.totals["text"] += b.sizes.text
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+ r.totals["data"] += b.sizes.data
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+ r.totals["bss"] += b.sizes.bss
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+
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+ r.deltas["total"] = r.sizes.total - r.totals["total"]
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+ r.deltas["text"] = r.sizes.text - r.totals["text"]
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+ r.deltas["data"] = r.sizes.data - r.totals["data"]
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+ r.deltas["bss"] = r.sizes.bss - r.totals["bss"]
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+ return r
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+ create = staticmethod(create)
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+
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+ def __init__(self, glob, title):
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+ self.glob = glob
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+ self.title = title
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+ self.sizes = Sizes(glob)
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+ self.parts = []
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+ self.totals = {"total":0, "text":0, "data":0, "bss":0}
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+ self.deltas = {"total":0, "text":0, "data":0, "bss":0}
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+
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+ def show(self, indent=""):
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+ rule = str.ljust(indent, 80, '-')
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+ print "%-32s %10s | %10s %10s %10s" % \
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+ (indent+self.title, "total", "text", "data", "bss")
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+ print rule
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+ self.sizes.show(indent)
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+ print rule
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+ for p in self.parts:
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+ if p.sizes.total > 0:
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+ p.sizes.show(indent)
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+ print rule
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+ print "%-32s %10d | %10d %10d %10d" % \
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+ (indent+"sum", self.totals["total"], self.totals["text"],
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+ self.totals["data"], self.totals["bss"])
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+ print "%-32s %10d | %10d %10d %10d" % \
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+ (indent+"delta", self.deltas["total"], self.deltas["text"],
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+ self.deltas["data"], self.deltas["bss"])
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+ print "\n"
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+
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+ def __cmp__(this, that):
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+ if that is None:
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+ return 1
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+ if not isinstance(that, Report):
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+ raise TypeError
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+ if this.sizes.total < that.sizes.total:
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+ return -1
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+ if this.sizes.total > that.sizes.total:
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+ return 1
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+ return 0
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+
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+
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+def main():
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+ try:
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+ opts, args = getopt.getopt(sys.argv[1:], "dh", ["help"])
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+ except getopt.GetoptError, err:
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+ print '%s' % str(err)
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+ usage()
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+ sys.exit(2)
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+
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+ driver_detail = False
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+ for o, a in opts:
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+ if o == '-d':
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+ driver_detail = True
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+ elif o in ('-h', '--help'):
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+ usage()
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+ sys.exit(0)
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+ else:
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+ assert False, "unhandled option"
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+
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+ glob = "arch/*/built-in.o */built-in.o"
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+ vmlinux = Report.create("vmlinux", "Linux Kernel", glob)
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+
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+ vmlinux.show()
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+ for b in vmlinux.parts:
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+ if b.totals["total"] > 0 and len(b.parts) > 1:
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+ b.show()
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+ if b.title == "drivers" and driver_detail:
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+ for d in b.parts:
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+ if d.totals["total"] > 0 and len(d.parts) > 1:
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+ d.show(" ")
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+
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+
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+if __name__ == "__main__":
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+ main()
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