| #!/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; |
| while (<.tmp_versions/*.mod>) { |
| open my $fh, '<', $_ or die "cannot open $_: $!\n"; |
| push (@file, |
| grep s/\.ko/.mod.c/, # change the suffix |
| grep m/.+\.ko/, # find the .ko path |
| <$fh>); # lines in opened 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"; |
| } |
| |
| open (my $module_symvers, '<', $opt{'k'}) |
| or die "Sorry, cannot open $opt{'k'}: $!\n"; |
| |
| if (defined $opt{'o'}) { |
| open (my $out, '>', $opt{'o'}) |
| or die "Sorry, cannot open $opt{'o'} $!\n"; |
| |
| select $out; |
| } |
| |
| # |
| # collect all the symbols and their attributes from the |
| # Module.symvers file |
| # |
| while ( <$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) { |
| my $module; |
| |
| unless (open ($module, '<', $thismod)) { |
| warn "Sorry, cannot open $thismod: $!\n"; |
| next; |
| } |
| |
| my $state=0; |
| while ( <$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); |
| } |
| |
| 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); |
| } |