Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

#!/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'}) {

        $opt{'k'} = "Module.symvers";

}

unless (open(MODULE_SYMVERS, $opt{'k'})) {

        die "Sorry, cannot open $opt{'k'}: $!\n";

}

if (defined $opt{'o'}) {

        unless (open(OUTPUT_HANDLE, ">$opt{'o'}")) {

                die "Sorry, cannot open $opt{'o'} $!\n";

        }

        select OUTPUT_HANDLE;

}

#

# collect all the symbols and their attributes from the

# Module.symvers file

#

while ( <MODULE_SYMVERS> ) {

        chomp;

        my (undef, $symbol, $module, $gpl) = split;

        $SYMBOL { $symbol } =  [ $module , "0" , $symbol, $gpl];

}

close(MODULE_SYMVERS);

#

# collect the usage count of each symbol.

#

foreach my $thismod (@allcfiles) {

        unless (open(MODULE_MODULE, $thismod)) {

                print "Sorry, cannot open $thismod: $!\n";

                next;

        }

        my $state=0;

        while ( <MODULE_MODULE> ) {

                chomp;

                if ($state == 0) {

                        $state = 1 if ($_ =~ /static const struct modversion_info/);

                        next;

                }

                if ($state == 1) {

                        $state = 2 if ($_ =~ /__attribute__\(\(section\("__versions"\)\)\)/);

                        next;

                }

                if ($state == 2) {

                        if ( $_ !~ /0x[0-9a-f]+,/ ) {

                                next;

                        }

                        my $sym = (split /([,"])/,)[4];

                        my ($module, $value, $symbol, $gpl) = @{$SYMBOL{$sym}};

                        $SYMBOL{ $sym } =  [ $module, $value+1, $symbol, $gpl];

                        push(@{$MODULE{$thismod}} , $sym);

                }

        }

        if ($state != 2) {

                print "WARNING:$thismod is not built with CONFIG_MODVERSION enabled\n";

        }

        close(MODULE_MODULE);

}

print "\tThis file reports the exported symbols usage patterns by in-tree\n",

        "\t\t\t\tmodules\n";

printf("%s\n\n\n","x"x80);

printf("\t\t\t\tINDEX\n\n\n");

printf("SECTION 1: Usage counts of all exported symbols\n");

printf("SECTION 2: List of modules and the exported symbols they use\n");

printf("%s\n\n\n","x"x80);

printf("SECTION 1:\tThe exported symbols and their usage count\n\n");

printf("%-25s\t%-25s\t%-5s\t%-25s\n", "Symbol", "Module", "Usage count",

        "export type");

#

# print the list of unused exported symbols

#

foreach my $list (sort alphabetically values(%SYMBOL)) {

        my ($module, $value, $symbol, $gpl) = @{$list};

        printf("%-25s\t%-25s\t%-10s\t", $symbol, $module, $value);

        if (defined $gpl) {

                printf("%-25s\n",$gpl);

        } else {

                printf("\n");

        }

}

printf("%s\n\n\n","x"x80);

printf("SECTION 2:\n\tThis section reports export-symbol-usage of in-kernel

modules. Each module lists the modules, and the symbols from that module that

it uses.  Each listed symbol reports the number of modules using it\n");

print "~"x80 , "\n";

while (my ($thismod, $list) = each %MODULE) {

        my %depends;

        $thismod =~ s/\.mod\.c/.ko/;

        print "\t\t\t$thismod\n";

        foreach my $symbol (@{$list}) {

                my ($module, $value, undef, $gpl) = @{$SYMBOL{$symbol}};

                push (@{$depends{"$module"}}, "$symbol $value");

        }

        print_depends_on(\%depends);

}