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1 | #!/usr/bin/perl -w |
2 | # |
3 | # (C) Copyright IBM Corporation 2006. |
4 | # Released under GPL v2. |
5 | # Author : Ram Pai (linuxram@us.ibm.com) |
6 | # |
7 | # Usage: export_report.pl -k Module.symvers [-o report_file ] -f *.mod.c |
8 | # |
9 | |
10 | use Getopt::Std; |
11 | use strict; |
12 | |
13 | sub numerically { |
14 | my $no1 = (split /\s+/, $a)[1]; |
15 | my $no2 = (split /\s+/, $b)[1]; |
16 | return $no1 <=> $no2; |
17 | } |
18 | |
19 | sub alphabetically { |
20 | my ($module1, $value1) = @{$a}; |
21 | my ($module2, $value2) = @{$b}; |
22 | return $value1 <=> $value2 || $module2 cmp $module1; |
23 | } |
24 | |
25 | sub print_depends_on { |
26 | my ($href) = @_; |
27 | print "\n"; |
28 | while (my ($mod, $list) = each %$href) { |
29 | print "\t$mod:\n"; |
30 | foreach my $sym (sort numerically @{$list}) { |
31 | my ($symbol, $no) = split /\s+/, $sym; |
32 | printf("\t\t%-25s\t%-25d\n", $symbol, $no); |
33 | } |
34 | print "\n"; |
35 | } |
36 | print "\n"; |
37 | print "~"x80 , "\n"; |
38 | } |
39 | |
40 | sub usage { |
41 | print "Usage: @_ -h -k Module.symvers [ -o outputfile ] \n", |
42 | "\t-f: treat all the non-option argument as .mod.c files. ", |
43 | "Recommend using this as the last option\n", |
44 | "\t-h: print detailed help\n", |
45 | "\t-k: the path to Module.symvers file. By default uses ", |
46 | "the file from the current directory\n", |
47 | "\t-o outputfile: output the report to outputfile\n"; |
48 | exit 0; |
49 | } |
50 | |
51 | sub collectcfiles { |
52 | my @file |
53 | = `cat .tmp_versions/*.mod | grep '.*\.ko\$' | sed s/\.ko$/.mod.c/`; |
54 | chomp @file; |
55 | return @file; |
56 | } |
57 | |
58 | my (%SYMBOL, %MODULE, %opt, @allcfiles); |
59 | |
60 | if (not getopts('hk:o:f',\%opt) or defined $opt{'h'}) { |
61 | usage($0); |
62 | } |
63 | |
64 | if (defined $opt{'f'}) { |
65 | @allcfiles = @ARGV; |
66 | } else { |
67 | @allcfiles = collectcfiles(); |
68 | } |
69 | |
70 | if (not defined $opt{'k'}) { |
71 | $opt{'k'} = "Module.symvers"; |
72 | } |
73 | |
74 | open (my $module_symvers, '<', $opt{'k'}) |
75 | or die "Sorry, cannot open $opt{'k'}: $!\n"; |
76 | |
77 | if (defined $opt{'o'}) { |
78 | open (my $out, '>', $opt{'o'}) |
79 | or die "Sorry, cannot open $opt{'o'} $!\n"; |
80 | |
81 | select $out; |
82 | } |
83 | |
84 | # |
85 | # collect all the symbols and their attributes from the |
86 | # Module.symvers file |
87 | # |
88 | while ( <$module_symvers> ) { |
89 | chomp; |
90 | my (undef, $symbol, $module, $gpl) = split; |
91 | $SYMBOL { $symbol } = [ $module , "0" , $symbol, $gpl]; |
92 | } |
93 | close($module_symvers); |
94 | |
95 | # |
96 | # collect the usage count of each symbol. |
97 | # |
98 | foreach my $thismod (@allcfiles) { |
99 | my $module; |
100 | |
101 | unless (open ($module, '<', $thismod)) { |
102 | warn "Sorry, cannot open $thismod: $!\n"; |
103 | next; |
104 | } |
105 | |
106 | my $state=0; |
107 | while ( <$module> ) { |
108 | chomp; |
109 | if ($state == 0) { |
110 | $state = 1 if ($_ =~ /static const struct modversion_info/); |
111 | next; |
112 | } |
113 | if ($state == 1) { |
114 | $state = 2 if ($_ =~ /__attribute__\(\(section\("__versions"\)\)\)/); |
115 | next; |
116 | } |
117 | if ($state == 2) { |
118 | if ( $_ !~ /0x[0-9a-f]+,/ ) { |
119 | next; |
120 | } |
121 | my $sym = (split /([,"])/,)[4]; |
122 | my ($module, $value, $symbol, $gpl) = @{$SYMBOL{$sym}}; |
123 | $SYMBOL{ $sym } = [ $module, $value+1, $symbol, $gpl]; |
124 | push(@{$MODULE{$thismod}} , $sym); |
125 | } |
126 | } |
127 | if ($state != 2) { |
128 | print "WARNING:$thismod is not built with CONFIG_MODVERSION enabled\n"; |
129 | } |
130 | close($module); |
131 | } |
132 | |
133 | print "\tThis file reports the exported symbols usage patterns by in-tree\n", |
134 | "\t\t\t\tmodules\n"; |
135 | printf("%s\n\n\n","x"x80); |
136 | printf("\t\t\t\tINDEX\n\n\n"); |
137 | printf("SECTION 1: Usage counts of all exported symbols\n"); |
138 | printf("SECTION 2: List of modules and the exported symbols they use\n"); |
139 | printf("%s\n\n\n","x"x80); |
140 | printf("SECTION 1:\tThe exported symbols and their usage count\n\n"); |
141 | printf("%-25s\t%-25s\t%-5s\t%-25s\n", "Symbol", "Module", "Usage count", |
142 | "export type"); |
143 | |
144 | # |
145 | # print the list of unused exported symbols |
146 | # |
147 | foreach my $list (sort alphabetically values(%SYMBOL)) { |
148 | my ($module, $value, $symbol, $gpl) = @{$list}; |
149 | printf("%-25s\t%-25s\t%-10s\t", $symbol, $module, $value); |
150 | if (defined $gpl) { |
151 | printf("%-25s\n",$gpl); |
152 | } else { |
153 | printf("\n"); |
154 | } |
155 | } |
156 | printf("%s\n\n\n","x"x80); |
157 | |
158 | printf("SECTION 2:\n\tThis section reports export-symbol-usage of in-kernel |
159 | modules. Each module lists the modules, and the symbols from that module that |
160 | it uses. Each listed symbol reports the number of modules using it\n"); |
161 | |
162 | print "~"x80 , "\n"; |
163 | while (my ($thismod, $list) = each %MODULE) { |
164 | my %depends; |
165 | $thismod =~ s/\.mod\.c/.ko/; |
166 | print "\t\t\t$thismod\n"; |
167 | foreach my $symbol (@{$list}) { |
168 | my ($module, $value, undef, $gpl) = @{$SYMBOL{$symbol}}; |
169 | push (@{$depends{"$module"}}, "$symbol $value"); |
170 | } |
171 | print_depends_on(\%depends); |
172 | } |
173 |
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od-2011-09-04
od-2011-09-18
v2.6.34-rc5
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