#!/usr/bin/perl -w # # (C) Copyright IBM Corporation 2006. # Released under GPL v2. # Author : Ram Pai (linuxram@us.ibm.com) # # Usage: export_report.pl -k Module.symvers [-o report_file ] -f *.mod.c # use Getopt::Std; use strict; sub numerically { my $no1 = (split /\s+/, $a)[1]; my $no2 = (split /\s+/, $b)[1]; return $no1 <=> $no2; } sub alphabetically { my ($module1, $value1) = @{$a}; my ($module2, $value2) = @{$b}; return $value1 <=> $value2 || $module2 cmp $module1; } sub print_depends_on { my ($href) = @_; print "\n"; for my $mod (sort keys %$href) { my $list = $href->{$mod}; print "\t$mod:\n"; foreach my $sym (sort numerically @{$list}) { my ($symbol, $no) = split /\s+/, $sym; printf("\t\t%-25s\n", $symbol); } print "\n"; } print "\n"; print "~"x80 , "\n"; } sub usage { 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; while (<.tmp_versions/*.mod>) { open my $fh, '<', $_ or die "cannot open $_: $!\n"; push (@file, grep s/\.ko/.mod.c/, # change the suffix grep m/.+\.ko/, # find the .ko path <$fh>); # lines in opened file } chomp @file; return @file; } my (%SYMBOL, %MODULE, %opt, @allcfiles); if (not getopts('hk:o:f',\%opt) or defined $opt{'h'}) { usage($0); } if (defined $opt{'f'}) { @allcfiles = @ARGV; } else { @allcfiles = collectcfiles(); } if (not defined $opt{'k'}) { $opt{'k'} = "Module.symvers"; } open (my $module_symvers, '<', $opt{'k'}) or die "Sorry, cannot open $opt{'k'}: $!\n"; if (defined $opt{'o'}) { open (my $out, '>', $opt{'o'}) or die "Sorry, cannot open $opt{'o'} $!\n"; select $out; } # # collect all the symbols and their attributes from the # Module.symvers file # while ( <$module_symvers> ) { chomp; my (undef, $symbol, $module, $gpl) = split; $SYMBOL { $symbol } = [ $module , "0" , $symbol, $gpl]; } close($module_symvers); # # collect the usage count of each symbol. # my $modversion_warnings = 0; foreach my $thismod (@allcfiles) { my $module; unless (open ($module, '<', $thismod)) { warn "Sorry, cannot open $thismod: $!\n"; next; } my $state=0; while ( <$module> ) { chomp; if ($state == 0) { $state = 1 if ($_ =~ /static const struct modversion_info/); next; } if ($state == 1) { $state = 2 if ($_ =~ /__attribute__\(\(section\("__versions"\)\)\)/); next; } if ($state == 2) { if ( $_ !~ /0x[0-9a-f]+,/ ) { 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 != 2) { warn "WARNING:$thismod is not built with CONFIG_MODVERSIONS enabled\n"; $modversion_warnings++; } close($module); } 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("%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"); # # print the list of unused exported symbols # foreach my $list (sort alphabetically values(%SYMBOL)) { my ($module, $value, $symbol, $gpl) = @{$list}; printf("%-25s\t%-25s\t%-10s\t", $symbol, $module, $value); if (defined $gpl) { printf("%-25s\n",$gpl); } else { printf("\n"); } } printf("%s\n\n\n","x"x80); printf("SECTION 2:\n\tThis section reports export-symbol-usage of in-kernel modules. Each module lists the modules, and the symbols from that module that it uses. Each listed symbol reports the number of modules using it\n"); print "\nNOTE: Got $modversion_warnings CONFIG_MODVERSIONS warnings\n\n" if $modversion_warnings; print "~"x80 , "\n"; for my $thismod (sort keys %MODULE) { my $list = $MODULE{$thismod}; my %depends; $thismod =~ s/\.mod\.c/.ko/; print "\t\t\t$thismod\n"; foreach my $symbol (@{$list}) { my ($module, $value, undef, $gpl) = @{$SYMBOL{$symbol}}; push (@{$depends{"$module"}}, "$symbol $value"); } print_depends_on(\%depends); } 849c5b76c7823469'>b5b46c4740aed1538544f0fa849c5b76c7823469 (patch) tree125e7aced4835bad6f6a0c0d02d012f333caf922 /net/can parentfa19a769f82fb9a5ca000b83cacd13fcaeda51ac (diff)
objtool: Fix IRET's opcode
The IRET opcode is 0xcf according to the Intel manual and also to objdump of my vmlinux: 1ea8: 48 cf iretq Fix the opcode in arch_decode_instruction(). The previous value (0xc5) seems to correspond to LDS. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Acked-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20170118132921.19319-1-jslaby@suse.cz Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'net/can')