The patch titled
KBUILD: export-symbol usage report generator (upadte)
has been added to the -mm tree. Its filename is
kbuild-export-symbol-usage-report-generator-update.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: KBUILD: export-symbol usage report generator (upadte)
From: Ram Pai <linuxram@xxxxxxxxxx>
Provide the ability to generate a report of
(1) All the exported symbols and their in-kernel-module usage count
(2) For each module, lists the modules and their exported symbols, on
which it depends.
the report can be generated by executing:
perl scripts/export_report
The tool warns if the modules are not built using MODVERSIONING.
Signed-off-by: Ram Pai <linuxram@xxxxxxxxxx>
Cc: Sam Ravnborg <sam@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
scripts/export_report.pl | 51 ++++++++++++++++++++++++++-----------
1 file changed, 36 insertions(+), 15 deletions(-)
diff -puN scripts/export_report.pl~kbuild-export-symbol-usage-report-generator-update scripts/export_report.pl
--- a/scripts/export_report.pl~kbuild-export-symbol-usage-report-generator-update
+++ a/scripts/export_report.pl
@@ -4,7 +4,7 @@
# Released under GPL v2.
# Author : Ram Pai (linuxram@xxxxxxxxxx)
#
-# Usage: export_report.pl -k Module.symvers [-o report_file ] *.mod.c
+# Usage: export_report.pl -k Module.symvers [-o report_file ] -f *.mod.c
#
use Getopt::Std;
@@ -38,12 +38,20 @@ sub print_depends_on {
}
sub usage {
- die "Usage: @_ -h -k Module.symvers [ -o outputfile ] -f all the .mod.c files \n";
+ 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 = `cat .tmp_versions/*.mod | grep '.*\.ko\$'`;
@file = grep {s/\.ko/.mod.c/} @file;
+ chomp @file;
return @file;
}
@@ -67,7 +75,6 @@ unless (open(MODULE_SYMVERS, $opt{'k'}))
die "Sorry, cannot open $opt{'k'}: $!\n";
}
-
if (defined $opt{'o'}) {
unless (open(OUTPUT_HANDLE, ">$opt{'o'}")) {
die "Sorry, cannot open $opt{'o'} $!\n";
@@ -93,29 +100,43 @@ foreach my $thismod (@allcfiles) {
print "Sorry, cannot open $thismod: $!\n";
next;
}
+ my $state=0;
while ( <MODULE_MODULE> ) {
chomp;
- if ( $_ !~ /0x[0-9a-f]{7,8},/ ) {
+ if ($state eq 0) {
+ $state = 1 if ($_ =~ /static const struct modversion_info/);
+ next;
+ }
+ if ($state eq 1) {
+ $state = 2 if ($_ =~ /__attribute__\(\(section\("__versions"\)\)\)/);
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 eq 2) {
+ if ( $_ !~ /0x[0-9a-f]{7,8},/ ) {
+ 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 ne 2) {
+ print "WARNING:$thismod is not built with CONFIG_MODVERSION enabled\n";
}
close(MODULE_MODULE);
}
-print "\tTHIS FILE REPORTS THE USAGE PATTERNS OF EXPORTED SYMBOLS BY IN_TREE\n";
-print "\t\t\t\tMODULES\n";
+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("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");
+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
_
Patches currently in -mm which might be from linuxram@xxxxxxxxxx are
git-kbuild.patch
kbuild-export-symbol-usage-report-generator.patch
kbuild-export-symbol-usage-report-generator-update.patch
core-use-list_move.patch
-
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