ia64/linux-2.6.18-xen.hg

view scripts/export_report.pl @ 893:f994bfe9b93b

linux/blktap2: reduce TLB flush scope

c/s 885 added very coarse TLB flushing. Since these flushes always
follow single page updates, single page flushes (when available) are
sufficient.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
author Keir Fraser <keir.fraser@citrix.com>
date Thu Jun 04 10:32:57 2009 +0100 (2009-06-04)
parents 831230e53067
children
line source
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 #
10 use Getopt::Std;
11 use strict;
13 sub numerically {
14 my $no1 = (split /\s+/, $a)[1];
15 my $no2 = (split /\s+/, $b)[1];
16 return $no1 <=> $no2;
17 }
19 sub alphabetically {
20 my ($module1, $value1) = @{$a};
21 my ($module2, $value2) = @{$b};
22 return $value1 <=> $value2 || $module2 cmp $module1;
23 }
25 sub print_depends_on {
26 my ($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 }
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 }
51 sub collectcfiles {
52 my @file = `cat .tmp_versions/*.mod | grep '.*\.ko\$'`;
53 @file = grep {s/\.ko/.mod.c/} @file;
54 chomp @file;
55 return @file;
56 }
58 my (%SYMBOL, %MODULE, %opt, @allcfiles);
60 if (not getopts('hk:o:f',\%opt) or defined $opt{'h'}) {
61 usage($0);
62 }
64 if (defined $opt{'f'}) {
65 @allcfiles = @ARGV;
66 } else {
67 @allcfiles = collectcfiles();
68 }
70 if (not defined $opt{'k'}) {
71 $opt{'k'} = "Module.symvers";
72 }
74 unless (open(MODULE_SYMVERS, $opt{'k'})) {
75 die "Sorry, cannot open $opt{'k'}: $!\n";
76 }
78 if (defined $opt{'o'}) {
79 unless (open(OUTPUT_HANDLE, ">$opt{'o'}")) {
80 die "Sorry, cannot open $opt{'o'} $!\n";
81 }
82 select OUTPUT_HANDLE;
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);
95 #
96 # collect the usage count of each symbol.
97 #
98 foreach my $thismod (@allcfiles) {
99 unless (open(MODULE_MODULE, $thismod)) {
100 print "Sorry, cannot open $thismod: $!\n";
101 next;
102 }
103 my $state=0;
104 while ( <MODULE_MODULE> ) {
105 chomp;
106 if ($state eq 0) {
107 $state = 1 if ($_ =~ /static const struct modversion_info/);
108 next;
109 }
110 if ($state eq 1) {
111 $state = 2 if ($_ =~ /__attribute__\(\(section\("__versions"\)\)\)/);
112 next;
113 }
114 if ($state eq 2) {
115 if ( $_ !~ /0x[0-9a-f]{7,8},/ ) {
116 next;
117 }
118 my $sym = (split /([,"])/,)[4];
119 my ($module, $value, $symbol, $gpl) = @{$SYMBOL{$sym}};
120 $SYMBOL{ $sym } = [ $module, $value+1, $symbol, $gpl];
121 push(@{$MODULE{$thismod}} , $sym);
122 }
123 }
124 if ($state ne 2) {
125 print "WARNING:$thismod is not built with CONFIG_MODVERSION enabled\n";
126 }
127 close(MODULE_MODULE);
128 }
130 print "\tThis file reports the exported symbols usage patterns by in-tree\n",
131 "\t\t\t\tmodules\n";
132 printf("%s\n\n\n","x"x80);
133 printf("\t\t\t\tINDEX\n\n\n");
134 printf("SECTION 1: Usage counts of all exported symbols\n");
135 printf("SECTION 2: List of modules and the exported symbols they use\n");
136 printf("%s\n\n\n","x"x80);
137 printf("SECTION 1:\tThe exported symbols and their usage count\n\n");
138 printf("%-25s\t%-25s\t%-5s\t%-25s\n", "Symbol", "Module", "Usage count",
139 "export type");
141 #
142 # print the list of unused exported symbols
143 #
144 foreach my $list (sort alphabetically values(%SYMBOL)) {
145 my ($module, $value, $symbol, $gpl) = @{$list};
146 printf("%-25s\t%-25s\t%-10s\t", $symbol, $module, $value);
147 if (defined $gpl) {
148 printf("%-25s\n",$gpl);
149 } else {
150 printf("\n");
151 }
152 }
153 printf("%s\n\n\n","x"x80);
155 printf("SECTION 2:\n\tThis section reports export-symbol-usage of in-kernel
156 modules. Each module lists the modules, and the symbols from that module that
157 it uses. Each listed symbol reports the number of modules using it\n");
159 print "~"x80 , "\n";
160 while (my ($thismod, $list) = each %MODULE) {
161 my %depends;
162 $thismod =~ s/\.mod\.c/.ko/;
163 print "\t\t\t$thismod\n";
164 foreach my $symbol (@{$list}) {
165 my ($module, $value, undef, $gpl) = @{$SYMBOL{$symbol}};
166 push (@{$depends{"$module"}}, "$symbol $value");
167 }
168 print_depends_on(\%depends);
169 }