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Source at commit 2604e7f9a98c27be50a0c3ff7503b6a5ea8f6cfe created 12 years 7 months ago. By Maarten ter Huurne, cpufreq_stats: Support runtime changes to frequency table | |
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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 | for my $mod (sort keys %$href) { |
29 | my $list = $href->{$mod}; |
30 | print "\t$mod:\n"; |
31 | foreach my $sym (sort numerically @{$list}) { |
32 | my ($symbol, $no) = split /\s+/, $sym; |
33 | printf("\t\t%-25s\n", $symbol); |
34 | } |
35 | print "\n"; |
36 | } |
37 | print "\n"; |
38 | print "~"x80 , "\n"; |
39 | } |
40 | |
41 | sub usage { |
42 | print "Usage: @_ -h -k Module.symvers [ -o outputfile ] \n", |
43 | "\t-f: treat all the non-option argument as .mod.c files. ", |
44 | "Recommend using this as the last option\n", |
45 | "\t-h: print detailed help\n", |
46 | "\t-k: the path to Module.symvers file. By default uses ", |
47 | "the file from the current directory\n", |
48 | "\t-o outputfile: output the report to outputfile\n"; |
49 | exit 0; |
50 | } |
51 | |
52 | sub collectcfiles { |
53 | my @file; |
54 | while (<.tmp_versions/*.mod>) { |
55 | open my $fh, '<', $_ or die "cannot open $_: $!\n"; |
56 | push (@file, |
57 | grep s/\.ko/.mod.c/, # change the suffix |
58 | grep m/.+\.ko/, # find the .ko path |
59 | <$fh>); # lines in opened file |
60 | } |
61 | chomp @file; |
62 | return @file; |
63 | } |
64 | |
65 | my (%SYMBOL, %MODULE, %opt, @allcfiles); |
66 | |
67 | if (not getopts('hk:o:f',\%opt) or defined $opt{'h'}) { |
68 | usage($0); |
69 | } |
70 | |
71 | if (defined $opt{'f'}) { |
72 | @allcfiles = @ARGV; |
73 | } else { |
74 | @allcfiles = collectcfiles(); |
75 | } |
76 | |
77 | if (not defined $opt{'k'}) { |
78 | $opt{'k'} = "Module.symvers"; |
79 | } |
80 | |
81 | open (my $module_symvers, '<', $opt{'k'}) |
82 | or die "Sorry, cannot open $opt{'k'}: $!\n"; |
83 | |
84 | if (defined $opt{'o'}) { |
85 | open (my $out, '>', $opt{'o'}) |
86 | or die "Sorry, cannot open $opt{'o'} $!\n"; |
87 | |
88 | select $out; |
89 | } |
90 | |
91 | # |
92 | # collect all the symbols and their attributes from the |
93 | # Module.symvers file |
94 | # |
95 | while ( <$module_symvers> ) { |
96 | chomp; |
97 | my (undef, $symbol, $module, $gpl) = split; |
98 | $SYMBOL { $symbol } = [ $module , "0" , $symbol, $gpl]; |
99 | } |
100 | close($module_symvers); |
101 | |
102 | # |
103 | # collect the usage count of each symbol. |
104 | # |
105 | my $modversion_warnings = 0; |
106 | |
107 | foreach my $thismod (@allcfiles) { |
108 | my $module; |
109 | |
110 | unless (open ($module, '<', $thismod)) { |
111 | warn "Sorry, cannot open $thismod: $!\n"; |
112 | next; |
113 | } |
114 | |
115 | my $state=0; |
116 | while ( <$module> ) { |
117 | chomp; |
118 | if ($state == 0) { |
119 | $state = 1 if ($_ =~ /static const struct modversion_info/); |
120 | next; |
121 | } |
122 | if ($state == 1) { |
123 | $state = 2 if ($_ =~ /__attribute__\(\(section\("__versions"\)\)\)/); |
124 | next; |
125 | } |
126 | if ($state == 2) { |
127 | if ( $_ !~ /0x[0-9a-f]+,/ ) { |
128 | next; |
129 | } |
130 | my $sym = (split /([,"])/,)[4]; |
131 | my ($module, $value, $symbol, $gpl) = @{$SYMBOL{$sym}}; |
132 | $SYMBOL{ $sym } = [ $module, $value+1, $symbol, $gpl]; |
133 | push(@{$MODULE{$thismod}} , $sym); |
134 | } |
135 | } |
136 | if ($state != 2) { |
137 | warn "WARNING:$thismod is not built with CONFIG_MODVERSIONS enabled\n"; |
138 | $modversion_warnings++; |
139 | } |
140 | close($module); |
141 | } |
142 | |
143 | print "\tThis file reports the exported symbols usage patterns by in-tree\n", |
144 | "\t\t\t\tmodules\n"; |
145 | printf("%s\n\n\n","x"x80); |
146 | printf("\t\t\t\tINDEX\n\n\n"); |
147 | printf("SECTION 1: Usage counts of all exported symbols\n"); |
148 | printf("SECTION 2: List of modules and the exported symbols they use\n"); |
149 | printf("%s\n\n\n","x"x80); |
150 | printf("SECTION 1:\tThe exported symbols and their usage count\n\n"); |
151 | printf("%-25s\t%-25s\t%-5s\t%-25s\n", "Symbol", "Module", "Usage count", |
152 | "export type"); |
153 | |
154 | # |
155 | # print the list of unused exported symbols |
156 | # |
157 | foreach my $list (sort alphabetically values(%SYMBOL)) { |
158 | my ($module, $value, $symbol, $gpl) = @{$list}; |
159 | printf("%-25s\t%-25s\t%-10s\t", $symbol, $module, $value); |
160 | if (defined $gpl) { |
161 | printf("%-25s\n",$gpl); |
162 | } else { |
163 | printf("\n"); |
164 | } |
165 | } |
166 | printf("%s\n\n\n","x"x80); |
167 | |
168 | printf("SECTION 2:\n\tThis section reports export-symbol-usage of in-kernel |
169 | modules. Each module lists the modules, and the symbols from that module that |
170 | it uses. Each listed symbol reports the number of modules using it\n"); |
171 | |
172 | print "\nNOTE: Got $modversion_warnings CONFIG_MODVERSIONS warnings\n\n" |
173 | if $modversion_warnings; |
174 | |
175 | print "~"x80 , "\n"; |
176 | for my $thismod (sort keys %MODULE) { |
177 | my $list = $MODULE{$thismod}; |
178 | my %depends; |
179 | $thismod =~ s/\.mod\.c/.ko/; |
180 | print "\t\t\t$thismod\n"; |
181 | foreach my $symbol (@{$list}) { |
182 | my ($module, $value, undef, $gpl) = @{$SYMBOL{$symbol}}; |
183 | push (@{$depends{"$module"}}, "$symbol $value"); |
184 | } |
185 | print_depends_on(\%depends); |
186 | } |
187 |
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