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| 2 | |
| 3 | |
| 4 | |
| 5 | |
| 6 | |
| 7 | |
| 8 | |
| 9 |
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| 10 | use Getopt::Std;
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| 11 | use strict;
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| 12 |
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| 13 | sub numerically {
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| 14 | my $no1 = (split /\s+/, $a)[1];
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| 15 | my $no2 = (split /\s+/, $b)[1];
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| 16 | return $no1 <=> $no2;
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| 17 | }
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| 18 |
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| 19 | sub alphabetically {
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| 20 | my ($module1, $value1) = @{$a};
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| 21 | my ($module2, $value2) = @{$b};
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| 22 | return $value1 <=> $value2 || $module2 cmp $module1;
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| 23 | }
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| 24 |
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| 25 | sub print_depends_on {
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| 26 | my ($href) = @_;
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| 27 | print "\n";
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| 28 | for my $mod (sort keys %$href) {
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| 29 | my $list = $href->{$mod};
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| 30 | print "\t$mod:\n";
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| 31 | foreach my $sym (sort numerically @{$list}) {
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| 32 | my ($symbol, $no) = split /\s+/, $sym;
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| 33 | printf("\t\t%-25s\n", $symbol);
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| 34 | }
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| 35 | print "\n";
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| 36 | }
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| 37 | print "\n";
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| 38 | print "~"x80 , "\n";
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| 39 | }
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| 40 |
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| 41 | sub usage {
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| 42 | print "Usage: @_ -h -k Module.symvers [ -o outputfile ] \n",
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| 43 | "\t-f: treat all the non-option argument as .mod.c files. ",
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| 44 | "Recommend using this as the last option\n",
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| 45 | "\t-h: print detailed help\n",
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| 46 | "\t-k: the path to Module.symvers file. By default uses ",
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| 47 | "the file from the current directory\n",
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| 48 | "\t-o outputfile: output the report to outputfile\n";
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| 49 | exit 0;
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| 50 | }
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| 51 |
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| 52 | sub collectcfiles {
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| 53 | my @file;
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| 54 | while (<.tmp_versions/*.mod>) {
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| 55 | open my $fh, '<', $_ or die "cannot open $_: $!\n";
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| 56 | push (@file,
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| 57 | grep s/\.ko/.mod.c/, |
| 58 | grep m/.+\.ko/, |
| 59 | <$fh>); |
| 60 | }
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| 61 | chomp @file;
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| 62 | return @file;
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| 63 | }
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| 64 |
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| 65 | my (%SYMBOL, %MODULE, %opt, @allcfiles);
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| 66 |
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| 67 | if (not getopts('hk:o:f',\%opt) or defined $opt{'h'}) {
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| 68 | usage($0);
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| 69 | }
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| 70 |
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| 71 | if (defined $opt{'f'}) {
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| 72 | @allcfiles = @ARGV;
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| 73 | } else {
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| 74 | @allcfiles = collectcfiles();
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| 75 | }
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| 76 |
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| 77 | if (not defined $opt{'k'}) {
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| 78 | $opt{'k'} = "Module.symvers";
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| 79 | }
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| 80 |
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| 81 | open (my $module_symvers, '<', $opt{'k'})
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| 82 | or die "Sorry, cannot open $opt{'k'}: $!\n";
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| 83 |
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| 84 | if (defined $opt{'o'}) {
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| 85 | open (my $out, '>', $opt{'o'})
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| 86 | or die "Sorry, cannot open $opt{'o'} $!\n";
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| 87 |
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| 88 | select $out;
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| 89 | }
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| 90 |
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| 91 | |
| 92 | |
| 93 | |
| 94 | |
| 95 | while ( <$module_symvers> ) {
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| 96 | chomp;
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| 97 | my (undef, $symbol, $module, $gpl) = split;
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| 98 | $SYMBOL { $symbol } = [ $module , "0" , $symbol, $gpl];
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| 99 | }
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| 100 | close($module_symvers);
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| 101 |
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| 102 | |
| 103 | |
| 104 | |
| 105 | my $modversion_warnings = 0;
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| 106 |
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| 107 | foreach my $thismod (@allcfiles) {
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| 108 | my $module;
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| 109 |
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| 110 | unless (open ($module, '<', $thismod)) {
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| 111 | warn "Sorry, cannot open $thismod: $!\n";
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| 112 | next;
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| 113 | }
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| 114 |
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| 115 | my $state=0;
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| 116 | while ( <$module> ) {
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| 117 | chomp;
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| 118 | if ($state == 0) {
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| 119 | $state = 1 if ($_ =~ /static const struct modversion_info/);
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| 120 | next;
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| 121 | }
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| 122 | if ($state == 1) {
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| 123 | $state = 2 if ($_ =~ /__attribute__\(\(section\("__versions"\)\)\)/);
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| 124 | next;
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| 125 | }
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| 126 | if ($state == 2) {
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| 127 | if ( $_ !~ /0x[0-9a-f]+,/ ) {
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| 128 | next;
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| 129 | }
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| 130 | my $sym = (split /([,"])/,)[4];
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| 131 | my ($module, $value, $symbol, $gpl) = @{$SYMBOL{$sym}};
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| 132 | $SYMBOL{ $sym } = [ $module, $value+1, $symbol, $gpl];
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| 133 | push(@{$MODULE{$thismod}} , $sym);
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| 134 | }
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| 135 | }
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| 136 | if ($state != 2) {
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| 137 | warn "WARNING:$thismod is not built with CONFIG_MODVERSIONS enabled\n";
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| 138 | $modversion_warnings++;
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| 139 | }
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| 140 | close($module);
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| 141 | }
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| 142 |
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| 143 | print "\tThis file reports the exported symbols usage patterns by in-tree\n",
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| 144 | "\t\t\t\tmodules\n";
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| 145 | printf("%s\n\n\n","x"x80);
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| 146 | printf("\t\t\t\tINDEX\n\n\n");
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| 147 | printf("SECTION 1: Usage counts of all exported symbols\n");
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| 148 | printf("SECTION 2: List of modules and the exported symbols they use\n");
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| 149 | printf("%s\n\n\n","x"x80);
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| 150 | printf("SECTION 1:\tThe exported symbols and their usage count\n\n");
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| 151 | printf("%-25s\t%-25s\t%-5s\t%-25s\n", "Symbol", "Module", "Usage count",
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| 152 | "export type");
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| 153 |
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| 154 | |
| 155 | |
| 156 | |
| 157 | foreach my $list (sort alphabetically values(%SYMBOL)) {
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| 158 | my ($module, $value, $symbol, $gpl) = @{$list};
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| 159 | printf("%-25s\t%-25s\t%-10s\t", $symbol, $module, $value);
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| 160 | if (defined $gpl) {
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| 161 | printf("%-25s\n",$gpl);
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| 162 | } else {
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| 163 | printf("\n");
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| 164 | }
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| 165 | }
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| 166 | printf("%s\n\n\n","x"x80);
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| 167 |
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| 168 | printf("SECTION 2:\n\tThis section reports export-symbol-usage of in-kernel
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| 169 | modules. Each module lists the modules, and the symbols from that module that
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| 170 | it uses. Each listed symbol reports the number of modules using it\n");
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| 171 |
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| 172 | print "\nNOTE: Got $modversion_warnings CONFIG_MODVERSIONS warnings\n\n"
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| 173 | if $modversion_warnings;
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| 174 |
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| 175 | print "~"x80 , "\n";
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| 176 | for my $thismod (sort keys %MODULE) {
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| 177 | my $list = $MODULE{$thismod};
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| 178 | my %depends;
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| 179 | $thismod =~ s/\.mod\.c/.ko/;
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| 180 | print "\t\t\t$thismod\n";
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| 181 | foreach my $symbol (@{$list}) {
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| 182 | my ($module, $value, undef, $gpl) = @{$SYMBOL{$symbol}};
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| 183 | push (@{$depends{"$module"}}, "$symbol $value");
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| 184 | }
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| 185 | print_depends_on(\%depends);
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| 186 | }
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