export_report.pl

#!/usr/bin/perl -w
#
# (C) Copyright IBM Corporation 2006.
#	Released under GPL v2.
#	Author : Ram Pai (linuxram@us.ibm.com)
#
# Usage: export_report.pl -k Module.symvers [-o report_file ] -f *.mod.c
#

use Getopt::Std;
use strict;

sub numerically {
	my $no1 = (split /\s+/, $a)[1];
	my $no2 = (split /\s+/, $b)[1];
	return $no1 <=> $no2;
}

sub alphabetically {
	my ($module1, $value1) = @{$a};
	my ($module2, $value2) = @{$b};
	return $value1 <=> $value2 || $module2 cmp $module1;
}

sub print_depends_on {
	my ($href) = @_;
	print "\n";
	while (my ($mod, $list) = each %$href) {
		print "\t$mod:\n";
		foreach my $sym (sort numerically @{$list}) {
			my ($symbol, $no) = split /\s+/, $sym;
			printf("\t\t%-25s\t%-25d\n", $symbol, $no);
		}
		print "\n";
	}
	print "\n";
	print "~"x80 , "\n";
}

sub usage {
        print "Usage: @_ -h -k Module.symvers  [ -o outputfile ] \n",
	      "\t-f: treat all the non-option argument as .mod.c files. ",
	      "Recommend using this as the last option\n",
	      "\t-h: print detailed help\n",
	      "\t-k: the path to Module.symvers file. By default uses ",
	      "the file from the current directory\n",
	      "\t-o outputfile: output the report to outputfile\n";
	exit 0;
}

sub collectcfiles {
        my @file = `cat .tmp_versions/*.mod | grep '.*\.ko\$'`;
        @file = grep {s/\.ko/.mod.c/} @file;
	chomp @file;
        return @file;
}

my (%SYMBOL, %MODULE, %opt, @allcfiles);

if (not getopts('hk:o:f',\%opt) or defined $opt{'h'}) {
        usage($0);
}

if (defined $opt{'f'}) {
	@allcfiles = @ARGV;
} else {
	@allcfiles = collectcfiles();
}

if (not defined $opt{'k'}) {