As all functionalities of it were migrated to get_abi.py,
drop the now obsoleted script.

Signed-off-by: Mauro Carvalho Chehab <mchehab+hua...@kernel.org>
---
 scripts/get_abi.pl | 1103 --------------------------------------------
 1 file changed, 1103 deletions(-)
 delete mode 100755 scripts/get_abi.pl

diff --git a/scripts/get_abi.pl b/scripts/get_abi.pl
deleted file mode 100755
index de1c0354b50c..000000000000
--- a/scripts/get_abi.pl
+++ /dev/null
@@ -1,1103 +0,0 @@
-#!/usr/bin/env perl
-# SPDX-License-Identifier: GPL-2.0
-
-BEGIN { $Pod::Usage::Formatter = 'Pod::Text::Termcap'; }
-
-use strict;
-use warnings;
-use utf8;
-use Pod::Usage qw(pod2usage);
-use Getopt::Long;
-use File::Find;
-use IO::Handle;
-use Fcntl ':mode';
-use Cwd 'abs_path';
-use Data::Dumper;
-
-my $help = 0;
-my $hint = 0;
-my $man = 0;
-my $debug = 0;
-my $enable_lineno = 0;
-my $show_warnings = 1;
-my $prefix="Documentation/ABI";
-my $sysfs_prefix="/sys";
-my $search_string;
-
-# Debug options
-my $dbg_what_parsing = 1;
-my $dbg_what_open = 2;
-my $dbg_dump_abi_structs = 4;
-my $dbg_undefined = 8;
-
-$Data::Dumper::Indent = 1;
-$Data::Dumper::Terse = 1;
-
-#
-# If true, assumes that the description is formatted with ReST
-#
-my $description_is_rst = 1;
-
-GetOptions(
-       "debug=i" => \$debug,
-       "enable-lineno" => \$enable_lineno,
-       "rst-source!" => \$description_is_rst,
-       "dir=s" => \$prefix,
-       'help|?' => \$help,
-       "show-hints" => \$hint,
-       "search-string=s" => \$search_string,
-       man => \$man
-) or pod2usage(2);
-
-pod2usage(1) if $help;
-pod2usage(-exitstatus => 0, -noperldoc, -verbose => 2) if $man;
-
-pod2usage(2) if (scalar @ARGV < 1 || @ARGV > 2);
-
-my ($cmd, $arg) = @ARGV;
-
-pod2usage(2) if ($cmd ne "search" && $cmd ne "rest" && $cmd ne "validate" && 
$cmd ne "undefined");
-pod2usage(2) if ($cmd eq "search" && !$arg);
-
-require Data::Dumper if ($debug & $dbg_dump_abi_structs);
-
-my %data;
-my %symbols;
-
-#
-# Displays an error message, printing file name and line
-#
-sub parse_error($$$$) {
-       my ($file, $ln, $msg, $data) = @_;
-
-       return if (!$show_warnings);
-
-       $data =~ s/\s+$/\n/;
-
-       print STDERR "Warning: file $file#$ln:\n\t$msg";
-
-       if ($data ne "") {
-               print STDERR ". Line\n\t\t$data";
-       } else {
-           print STDERR "\n";
-       }
-}
-
-#
-# Parse an ABI file, storing its contents at %data
-#
-sub parse_abi {
-       my $file = $File::Find::name;
-
-       my $mode = (stat($file))[2];
-       return if ($mode & S_IFDIR);
-       return if ($file =~ m,/README,);
-       return if ($file =~ m,/\.,);
-       return if ($file =~ m,\.(rej|org|orig|bak)$,);
-
-       my $name = $file;
-       $name =~ s,.*/,,;
-
-       my $fn = $file;
-       $fn =~ s,.*Documentation/ABI/,,;
-
-       my $nametag = "File $fn";
-       $data{$nametag}->{what} = "File $name";
-       $data{$nametag}->{type} = "File";
-       $data{$nametag}->{file} = $name;
-       $data{$nametag}->{filepath} = $file;
-       $data{$nametag}->{is_file} = 1;
-       $data{$nametag}->{line_no} = 1;
-
-       my $type = $file;
-       $type =~ s,.*/(.*)/.*,$1,;
-
-       my $what;
-       my $new_what;
-       my $tag = "";
-       my $ln;
-       my $xrefs;
-       my $space;
-       my @labels;
-       my $label = "";
-
-       print STDERR "Opening $file\n" if ($debug & $dbg_what_open);
-       open IN, $file;
-       while(<IN>) {
-               $ln++;
-               if (m/^(\S+)(:\s*)(.*)/i) {
-                       my $new_tag = lc($1);
-                       my $sep = $2;
-                       my $content = $3;
-
-                       if (!($new_tag =~ 
m/(what|where|date|kernelversion|contact|description|users)/)) {
-                               if ($tag eq "description") {
-                                       # New "tag" is actually part of
-                                       # description. Don't consider it a tag
-                                       $new_tag = "";
-                               } elsif ($tag ne "") {
-                                       parse_error($file, $ln, "tag '$tag' is 
invalid", $_);
-                               }
-                       }
-
-                       # Invalid, but it is a common mistake
-                       if ($new_tag eq "where") {
-                               parse_error($file, $ln, "tag 'Where' is 
invalid. Should be 'What:' instead", "");
-                               $new_tag = "what";
-                       }
-
-                       if ($new_tag =~ m/what/) {
-                               $space = "";
-                               $content =~ s/[,.;]$//;
-
-                               push @{$symbols{$content}->{file}}, " $file:" . 
($ln - 1);
-
-                               if ($tag =~ m/what/) {
-                                       $what .= "\xac" . $content;
-                               } else {
-                                       if ($what) {
-                                               parse_error($file, $ln, "What 
'$what' doesn't have a description", "") if (!$data{$what}->{description});
-
-                                               foreach my $w(split /\xac/, 
$what) {
-                                                       $symbols{$w}->{xref} = 
$what;
-                                               };
-                                       }
-
-                                       $what = $content;
-                                       $label = $content;
-                                       $new_what = 1;
-                               }
-                               push @labels, [($content, $label)];
-                               $tag = $new_tag;
-
-                               push @{$data{$nametag}->{symbols}}, $content if 
($data{$nametag}->{what});
-                               next;
-                       }
-
-                       if ($tag ne "" && $new_tag) {
-                               $tag = $new_tag;
-
-                               if ($new_what) {
-                                       @{$data{$what}->{label_list}} = @labels 
if ($data{$nametag}->{what});
-                                       @labels = ();
-                                       $label = "";
-                                       $new_what = 0;
-
-                                       $data{$what}->{type} = $type;
-                                       if (!defined($data{$what}->{file})) {
-                                               $data{$what}->{file} = $name;
-                                               $data{$what}->{filepath} = 
$file;
-                                       } else {
-                                               $data{$what}->{description} .= 
"\n\n" if (defined($data{$what}->{description}));
-                                               if ($name ne 
$data{$what}->{file}) {
-                                                       $data{$what}->{file} .= 
" " . $name;
-                                                       
$data{$what}->{filepath} .= " " . $file;
-                                               }
-                                       }
-                                       print STDERR "\twhat: $what\n" if 
($debug & $dbg_what_parsing);
-                                       $data{$what}->{line_no} = $ln;
-                               } else {
-                                       $data{$what}->{line_no} = $ln if 
(!defined($data{$what}->{line_no}));
-                               }
-
-                               if (!$what) {
-                                       parse_error($file, $ln, "'What:' should 
come first:", $_);
-                                       next;
-                               }
-                               if ($new_tag eq "description") {
-                                       $sep =~ s,:, ,;
-                                       $content = ' ' x length($new_tag) . 
$sep . $content;
-                                       while ($content =~ s/\t+/' ' x 
(length($&) * 8 - length($`) % 8)/e) {}
-                                       if ($content =~ m/^(\s*)(\S.*)$/) {
-                                               # Preserve initial spaces for 
the first line
-                                               $space = $1;
-                                               $content = "$2\n";
-                                               $data{$what}->{$tag} .= 
$content;
-                                       } else {
-                                               undef($space);
-                                       }
-
-                               } else {
-                                       $data{$what}->{$tag} = $content;
-                               }
-                               next;
-                       }
-               }
-
-               # Store any contents before tags at the database
-               if (!$tag && $data{$nametag}->{what}) {
-                       $data{$nametag}->{description} .= $_;
-                       next;
-               }
-
-               if ($tag eq "description") {
-                       my $content = $_;
-                       while ($content =~ s/\t+/' ' x (length($&) * 8 - 
length($`) % 8)/e) {}
-                       if (m/^\s*\n/) {
-                               $data{$what}->{$tag} .= "\n";
-                               next;
-                       }
-
-                       if (!defined($space)) {
-                               # Preserve initial spaces for the first line
-                               if ($content =~ m/^(\s*)(\S.*)$/) {
-                                       $space = $1;
-                                       $content = "$2\n";
-                               }
-                       } else {
-                               $space = "" if (!($content =~ s/^($space)//));
-                       }
-                       $data{$what}->{$tag} .= $content;
-
-                       next;
-               }
-               if (m/^\s*(.*)/) {
-                       $data{$what}->{$tag} .= "\n$1";
-                       $data{$what}->{$tag} =~ s/\n+$//;
-                       next;
-               }
-
-               # Everything else is error
-               parse_error($file, $ln, "Unexpected content", $_);
-       }
-       $data{$nametag}->{description} =~ s/^\n+// if 
($data{$nametag}->{description});
-       if ($what) {
-               parse_error($file, $ln, "What '$what' doesn't have a 
description", "") if (!$data{$what}->{description});
-
-               foreach my $w(split /\xac/,$what) {
-                       $symbols{$w}->{xref} = $what;
-               };
-       }
-       close IN;
-}
-
-sub create_labels {
-       my %labels;
-
-       foreach my $what (keys %data) {
-               next if ($data{$what}->{file} eq "File");
-
-               foreach my $p (@{$data{$what}->{label_list}}) {
-                       my ($content, $label) = @{$p};
-                       $label = "abi_" . $label . " ";
-                       $label =~ tr/A-Z/a-z/;
-
-                       # Convert special chars to "_"
-                       $label =~s/([\x00-\x2f\x3a-\x40\x5b-\x60\x7b-\xff])/_/g;
-                       $label =~ s,_+,_,g;
-                       $label =~ s,_$,,;
-
-                       # Avoid duplicated labels
-                       while (defined($labels{$label})) {
-                           my @chars = ("A".."Z", "a".."z");
-                           $label .= $chars[rand @chars];
-                       }
-                       $labels{$label} = 1;
-
-                       $data{$what}->{label} = $label;
-
-                       # only one label is enough
-                       last;
-               }
-       }
-}
-
-#
-# Outputs the book on ReST format
-#
-
-# \b doesn't work well with paths. So, we need to define something else:
-# Boundaries are punct characters, spaces and end-of-line
-my $start = qr {(^|\s|\() }x;
-my $bondary = qr { ([,.:;\)\s]|\z) }x;
-my $xref_match = qr { 
$start(\/(sys|config|proc|dev|kvd)\/[^,.:;\)\s]+)$bondary }x;
-my $symbols = qr { ([\x01-\x08\x0e-\x1f\x21-\x2f\x3a-\x40\x7b-\xff]) }x;
-
-sub output_rest {
-       create_labels();
-
-       my $part = "";
-
-       foreach my $what (sort {
-                               ($data{$a}->{type} eq "File") cmp 
($data{$b}->{type} eq "File") ||
-                               $a cmp $b
-                              } keys %data) {
-               my $type = $data{$what}->{type};
-
-               my @file = split / /, $data{$what}->{file};
-               my @filepath = split / /, $data{$what}->{filepath};
-
-               if ($enable_lineno) {
-                       printf ".. LINENO %s%s#%s\n\n",
-                              $prefix, $file[0],
-                              $data{$what}->{line_no};
-               }
-
-               my $w = $what;
-
-               if ($type ne "File") {
-                       my $cur_part = $what;
-                       if ($what =~ '/') {
-                               if ($what =~ m#^(\/?(?:[\w\-]+\/?){1,2})#) {
-                                       $cur_part = "Symbols under $1";
-                                       $cur_part =~ s,/$,,;
-                               }
-                       }
-
-                       if ($cur_part ne "" && $part ne $cur_part) {
-                           $part = $cur_part;
-                           my $bar = $part;
-                           $bar =~ s/./-/g;
-                           print "$part\n$bar\n\n";
-                       }
-
-                       printf ".. _%s:\n\n", $data{$what}->{label};
-
-                       my @names = split /\xac/,$w;
-                       my $len = 0;
-
-                       foreach my $name (@names) {
-                               $name =~ s/$symbols/\\$1/g;
-                               $name = "**$name**";
-                               $len = length($name) if (length($name) > $len);
-                       }
-
-                       print "+-" . "-" x $len . "-+\n";
-                       foreach my $name (@names) {
-                               printf "| %s", $name . " " x ($len - 
length($name)) . " |\n";
-                               print "+-" . "-" x $len . "-+\n";
-                       }
-
-                       print "\n";
-               }
-
-               for (my $i = 0; $i < scalar(@filepath); $i++) {
-                       my $path = $filepath[$i];
-                       my $f = $file[$i];
-
-                       $path =~ s,.*/(.*/.*),$1,;;
-                       $path =~ s,[/\-],_,g;;
-                       my $fileref = "abi_file_".$path;
-
-                       if ($type eq "File") {
-                               print ".. _$fileref:\n\n";
-                       } else {
-                               print "Defined on file :ref:`$f 
<$fileref>`\n\n";
-                       }
-               }
-
-               if ($type eq "File") {
-                       my $bar = $w;
-                       $bar =~ s/./-/g;
-                       print "$w\n$bar\n\n";
-               }
-
-               my $desc = "";
-               $desc = $data{$what}->{description} if 
(defined($data{$what}->{description}));
-               $desc =~ s/\s+$/\n/;
-
-               if (!($desc =~ /^\s*$/)) {
-                       if ($description_is_rst) {
-                               # Remove title markups from the description
-                               # Having titles inside ABI files will only work 
if extra
-                               # care would be taken in order to strictly 
follow the same
-                               # level order for each markup.
-                               $desc =~ s/\n[\-\*\=\^\~]+\n/\n\n/g;
-
-                               # Enrich text by creating cross-references
-
-                               my $new_desc = "";
-                               my $init_indent = -1;
-                               my $literal_indent = -1;
-
-                               open(my $fh, "+<", \$desc);
-                               while (my $d = <$fh>) {
-                                       my $indent = $d =~ m/^(\s+)/;
-                                       my $spaces = length($indent);
-                                       $init_indent = $indent if ($init_indent 
< 0);
-                                       if ($literal_indent >= 0) {
-                                               if ($spaces > $literal_indent) {
-                                                       $new_desc .= $d;
-                                                       next;
-                                               } else {
-                                                       $literal_indent = -1;
-                                               }
-                                       } else {
-                                               if ($d =~ /()::$/ && !($d =~ 
/^\s*\.\./)) {
-                                                       $literal_indent = 
$spaces;
-                                               }
-                                       }
-
-                                       $d =~ 
s,Documentation/(?!devicetree)(\S+)\.rst,:doc:`/$1`,g;
-
-                                       my @matches = $d =~ 
m,Documentation/ABI/([\w\/\-]+),g;
-                                       foreach my $f (@matches) {
-                                               my $xref = $f;
-                                               my $path = $f;
-                                               $path =~ s,.*/(.*/.*),$1,;;
-                                               $path =~ s,[/\-],_,g;;
-                                               $xref .= " <abi_file_" . $path 
. ">";
-                                               $d =~ 
s,\bDocumentation/ABI/$f\b,:ref:`$xref`,g;
-                                       }
-
-                                       # Seek for cross reference symbols like 
/sys/...
-                                       @matches = $d =~ m/$xref_match/g;
-
-                                       foreach my $s (@matches) {
-                                               next if (!($s =~ m,/,));
-                                               if (defined($data{$s}) && 
defined($data{$s}->{label})) {
-                                                       my $xref = $s;
-
-                                                       $xref =~ 
s/$symbols/\\$1/g;
-                                                       $xref = ":ref:`$xref <" 
. $data{$s}->{label} . ">`";
-
-                                                       $d =~ 
s,$start$s$bondary,$1$xref$2,g;
-                                               }
-                                       }
-                                       $new_desc .= $d;
-                               }
-                               close $fh;
-
-
-                               print "$new_desc\n\n";
-                       } else {
-                               $desc =~ s/^\s+//;
-
-                               # Remove title markups from the description, as 
they won't work
-                               $desc =~ s/\n[\-\*\=\^\~]+\n/\n\n/g;
-
-                               if ($desc =~ m/\:\n/ || $desc =~ m/\n[\t ]+/  
|| $desc =~ m/[\x00-\x08\x0b-\x1f\x7b-\xff]/) {
-                                       # put everything inside a code block
-                                       $desc =~ s/\n/\n /g;
-
-                                       print "::\n\n";
-                                       print " $desc\n\n";
-                               } else {
-                                       # Escape any special chars from 
description
-                                       $desc 
=~s/([\x00-\x08\x0b-\x1f\x21-\x2a\x2d\x2f\x3c-\x40\x5c\x5e-\x60\x7b-\xff])/\\$1/g;
-                                       print "$desc\n\n";
-                               }
-                       }
-               } else {
-                       print "DESCRIPTION MISSING for $what\n\n" if 
(!$data{$what}->{is_file});
-               }
-
-               if ($data{$what}->{symbols}) {
-                       printf "Has the following ABI:\n\n";
-
-                       foreach my $content(@{$data{$what}->{symbols}}) {
-                               my $label = 
$data{$symbols{$content}->{xref}}->{label};
-
-                               # Escape special chars from content
-                               $content 
=~s/([\x00-\x1f\x21-\x2f\x3a-\x40\x7b-\xff])/\\$1/g;
-
-                               print "- :ref:`$content <$label>`\n\n";
-                       }
-               }
-
-               if (defined($data{$what}->{users})) {
-                       my $users = $data{$what}->{users};
-
-                       $users =~ s/\n/\n\t/g;
-                       printf "Users:\n\t%s\n\n", $users if ($users ne "");
-               }
-
-       }
-}
-
-#
-# Searches for ABI symbols
-#
-sub search_symbols {
-       foreach my $what (sort keys %data) {
-               next if (!($what =~ m/($arg)/));
-
-               my $type = $data{$what}->{type};
-               next if ($type eq "File");
-
-               my $file = $data{$what}->{filepath};
-
-               $what =~ s/\xac/, /g;
-               my $bar = $what;
-               $bar =~ s/./-/g;
-
-               print "\n$what\n$bar\n\n";
-
-               my $kernelversion = $data{$what}->{kernelversion} if 
(defined($data{$what}->{kernelversion}));
-               my $contact = $data{$what}->{contact} if 
(defined($data{$what}->{contact}));
-               my $users = $data{$what}->{users} if 
(defined($data{$what}->{users}));
-               my $date = $data{$what}->{date} if 
(defined($data{$what}->{date}));
-               my $desc = $data{$what}->{description} if 
(defined($data{$what}->{description}));
-
-               $kernelversion =~ s/^\s+// if ($kernelversion);
-               $contact =~ s/^\s+// if ($contact);
-               if ($users) {
-                       $users =~ s/^\s+//;
-                       $users =~ s/\n//g;
-               }
-               $date =~ s/^\s+// if ($date);
-               $desc =~ s/^\s+// if ($desc);
-
-               printf "Kernel version:\t\t%s\n", $kernelversion if 
($kernelversion);
-               printf "Date:\t\t\t%s\n", $date if ($date);
-               printf "Contact:\t\t%s\n", $contact if ($contact);
-               printf "Users:\t\t\t%s\n", $users if ($users);
-               print "Defined on file(s):\t$file\n\n";
-               print "Description:\n\n$desc";
-       }
-}
-
-# Exclude /sys/kernel/debug and /sys/kernel/tracing from the search path
-sub dont_parse_special_attributes {
-       if (($File::Find::dir =~ m,^/sys/kernel,)) {
-               return grep {!/(debug|tracing)/ } @_;
-       }
-
-       if (($File::Find::dir =~ m,^/sys/fs,)) {
-               return grep {!/(pstore|bpf|fuse)/ } @_;
-       }
-
-       return @_
-}
-
-my %leaf;
-my %aliases;
-my @files;
-my %root;
-
-sub graph_add_file {
-       my $file = shift;
-       my $type = shift;
-
-       my $dir = $file;
-       $dir =~ s,^(.*/).*,$1,;
-       $file =~ s,.*/,,;
-
-       my $name;
-       my $file_ref = \%root;
-       foreach my $edge(split "/", $dir) {
-               $name .= "$edge/";
-               if (!defined ${$file_ref}{$edge}) {
-                       ${$file_ref}{$edge} = { };
-               }
-               $file_ref = \%{$$file_ref{$edge}};
-               ${$file_ref}{"__name"} = [ $name ];
-       }
-       $name .= "$file";
-       ${$file_ref}{$file} = {
-               "__name" => [ $name ]
-       };
-
-       return \%{$$file_ref{$file}};
-}
-
-sub graph_add_link {
-       my $file = shift;
-       my $link = shift;
-
-       # Traverse graph to find the reference
-       my $file_ref = \%root;
-       foreach my $edge(split "/", $file) {
-               $file_ref = \%{$$file_ref{$edge}} || die "Missing node!";
-       }
-
-       # do a BFS
-
-       my @queue;
-       my %seen;
-       my $st;
-
-       push @queue, $file_ref;
-       $seen{$start}++;
-
-       while (@queue) {
-               my $v = shift @queue;
-               my @child = keys(%{$v});
-
-               foreach my $c(@child) {
-                       next if $seen{$$v{$c}};
-                       next if ($c eq "__name");
-
-                       if (!defined($$v{$c}{"__name"})) {
-                               printf STDERR "Error: Couldn't find a non-empty 
name on a children of $file/.*: ";
-                               print STDERR Dumper(%{$v});
-                               exit;
-                       }
-
-                       # Add new name
-                       my $name = @{$$v{$c}{"__name"}}[0];
-                       if ($name =~ s#^$file/#$link/#) {
-                               push @{$$v{$c}{"__name"}}, $name;
-                       }
-                       # Add child to the queue and mark as seen
-                       push @queue, $$v{$c};
-                       $seen{$c}++;
-               }
-       }
-}
-
-my $escape_symbols = qr { 
([\x01-\x08\x0e-\x1f\x21-\x29\x2b-\x2d\x3a-\x40\x7b-\xfe]) }x;
-sub parse_existing_sysfs {
-       my $file = $File::Find::name;
-
-       my $mode = (lstat($file))[2];
-       my $abs_file = abs_path($file);
-
-       my @tmp;
-       push @tmp, $file;
-       push @tmp, $abs_file if ($abs_file ne $file);
-
-       foreach my $f(@tmp) {
-               # Ignore cgroup, as this is big and has zero docs under ABI
-               return if ($f =~ m#^/sys/fs/cgroup/#);
-
-               # Ignore firmware as it is documented elsewhere
-               # Either ACPI or under Documentation/devicetree/bindings/
-               return if ($f =~ m#^/sys/firmware/#);
-
-               # Ignore some sysfs nodes that aren't actually part of ABI
-               return if ($f =~ m#/sections|notes/#);
-
-               # Would need to check at
-               # Documentation/admin-guide/kernel-parameters.txt, but this
-               # is not easily parseable.
-               return if ($f =~ m#/parameters/#);
-       }
-
-       if (S_ISLNK($mode)) {
-               $aliases{$file} = $abs_file;
-               return;
-       }
-
-       return if (S_ISDIR($mode));
-
-       # Trivial: file is defined exactly the same way at ABI What:
-       return if (defined($data{$file}));
-       return if (defined($data{$abs_file}));
-
-       push @files, graph_add_file($abs_file, "file");
-}
-
-sub get_leave($)
-{
-       my $what = shift;
-       my $leave;
-
-       my $l = $what;
-       my $stop = 1;
-
-       $leave = $l;
-       $leave =~ s,/$,,;
-       $leave =~ s,.*/,,;
-       $leave =~ s/[\(\)]//g;
-
-       # $leave is used to improve search performance at
-       # check_undefined_symbols, as the algorithm there can seek
-       # for a small number of "what". It also allows giving a
-       # hint about a leave with the same name somewhere else.
-       # However, there are a few occurences where the leave is
-       # either a wildcard or a number. Just group such cases
-       # altogether.
-       if ($leave =~ m/\.\*/ || $leave eq "" || $leave =~ /\\d/) {
-               $leave = "others";
-       }
-
-       return $leave;
-}
-
-my @not_found;
-
-sub check_file($$)
-{
-       my $file_ref = shift;
-       my $names_ref = shift;
-       my @names = @{$names_ref};
-       my $file = $names[0];
-
-       my $found_string;
-
-       my $leave = get_leave($file);
-       if (!defined($leaf{$leave})) {
-               $leave = "others";
-       }
-       my @expr = @{$leaf{$leave}->{expr}};
-       die ("\rmissing rules for $leave") if (!defined($leaf{$leave}));
-
-       my $path = $file;
-       $path =~ s,(.*/).*,$1,;
-
-       if ($search_string) {
-               return if (!($file =~ m#$search_string#));
-               $found_string = 1;
-       }
-
-       for (my $i = 0; $i < @names; $i++) {
-               if ($found_string && $hint) {
-                       if (!$i) {
-                               print STDERR "--> $names[$i]\n";
-                       } else {
-                               print STDERR "    $names[$i]\n";
-                       }
-               }
-               foreach my $re (@expr) {
-                       print STDERR "$names[$i] =~ /^$re\$/\n" if ($debug && 
$dbg_undefined);
-                       if ($names[$i] =~ $re) {
-                               return;
-                       }
-               }
-       }
-
-       if ($leave ne "others") {
-               my @expr = @{$leaf{"others"}->{expr}};
-               for (my $i = 0; $i < @names; $i++) {
-                       foreach my $re (@expr) {
-                               print STDERR "$names[$i] =~ /^$re\$/\n" if 
($debug && $dbg_undefined);
-                               if ($names[$i] =~ $re) {
-                                       return;
-                               }
-                       }
-               }
-       }
-
-       push @not_found, $file if (!$search_string || $found_string);
-
-       if ($hint && (!$search_string || $found_string)) {
-               my $what = $leaf{$leave}->{what};
-               $what =~ s/\xac/\n\t/g;
-               if ($leave ne "others") {
-                       print STDERR "\r    more likely regexes:\n\t$what\n";
-               } else {
-                       print STDERR "\r    tested regexes:\n\t$what\n";
-               }
-       }
-}
-
-sub check_undefined_symbols {
-       my $num_files = scalar @files;
-       my $next_i = 0;
-       my $start_time = times;
-
-       @files = sort @files;
-
-       my $last_time = $start_time;
-
-       # When either debug or hint is enabled, there's no sense showing
-       # progress, as the progress will be overriden.
-       if ($hint || ($debug && $dbg_undefined)) {
-               $next_i = $num_files;
-       }
-
-       my $is_console;
-       $is_console = 1 if (-t STDERR);
-
-       for (my $i = 0; $i < $num_files; $i++) {
-               my $file_ref = $files[$i];
-               my @names = @{$$file_ref{"__name"}};
-
-               check_file($file_ref, \@names);
-
-               my $cur_time = times;
-
-               if ($i == $next_i || $cur_time > $last_time + 1) {
-                       my $percent = $i * 100 / $num_files;
-
-                       my $tm = $cur_time - $start_time;
-                       my $time = sprintf "%d:%02d", int($tm), 60 * ($tm - 
int($tm));
-
-                       printf STDERR "\33[2K\r", if ($is_console);
-                       printf STDERR "%s: processing sysfs files... %i%%: 
$names[0]", $time, $percent;
-                       printf STDERR "\n", if (!$is_console);
-                       STDERR->flush();
-
-                       $next_i = int (($percent + 1) * $num_files / 100);
-                       $last_time = $cur_time;
-               }
-       }
-
-       my $cur_time = times;
-       my $tm = $cur_time - $start_time;
-       my $time = sprintf "%d:%02d", int($tm), 60 * ($tm - int($tm));
-
-       printf STDERR "\33[2K\r", if ($is_console);
-       printf STDERR "%s: processing sysfs files... done\n", $time;
-
-       foreach my $file (@not_found) {
-               print "$file not found.\n";
-       }
-}
-
-sub undefined_symbols {
-       print STDERR "Reading $sysfs_prefix directory contents...";
-       find({
-               wanted =>\&parse_existing_sysfs,
-               preprocess =>\&dont_parse_special_attributes,
-               no_chdir => 1
-            }, $sysfs_prefix);
-       print STDERR "done.\n";
-
-       $leaf{"others"}->{what} = "";
-
-       print STDERR "Converting ABI What fields into regexes...";
-       foreach my $w (sort keys %data) {
-               foreach my $what (split /\xac/,$w) {
-                       next if (!($what =~ m/^$sysfs_prefix/));
-
-                       # Convert what into regular expressions
-
-                       # Escape dot characters
-                       $what =~ s/\./\xf6/g;
-
-                       # Temporarily change [0-9]+ type of patterns
-                       $what =~ s/\[0\-9\]\+/\xff/g;
-
-                       # Temporarily change [\d+-\d+] type of patterns
-                       $what =~ s/\[0\-\d+\]/\xff/g;
-                       $what =~ s/\[(\d+)\]/\xf4$1\xf5/g;
-
-                       # Temporarily change [0-9] type of patterns
-                       $what =~ s/\[(\d)\-(\d)\]/\xf4$1-$2\xf5/g;
-
-                       # Handle multiple option patterns
-                       $what =~ 
s/[\{\<\[]([\w_]+)(?:[,|]+([\w_]+)){1,}[\}\>\]]/($1|$2)/g;
-
-                       # Handle wildcards
-                       $what =~ s,\*,.*,g;
-                       $what =~ s,/\xf6..,/.*,g;
-                       $what =~ s/\<[^\>]+\>/.*/g;
-                       $what =~ s/\{[^\}]+\}/.*/g;
-                       $what =~ s/\[[^\]]+\]/.*/g;
-
-                       $what =~ s/[XYZ]/.*/g;
-
-                       # Recover [0-9] type of patterns
-                       $what =~ s/\xf4/[/g;
-                       $what =~ s/\xf5/]/g;
-
-                       # Remove duplicated spaces
-                       $what =~ s/\s+/ /g;
-
-                       # Special case: this ABI has a parenthesis on it
-                       $what =~ s/sqrt\(x^2\+y^2\+z^2\)/sqrt\(x^2\+y^2\+z^2\)/;
-
-                       # Special case: drop comparition as in:
-                       #       What: foo = <something>
-                       # (this happens on a few IIO definitions)
-                       $what =~ s,\s*\=.*$,,;
-
-                       # Escape all other symbols
-                       $what =~ s/$escape_symbols/\\$1/g;
-                       $what =~ s/\\\\/\\/g;
-                       $what =~ s/\\([\[\]\(\)\|])/$1/g;
-                       $what =~ s/(\d+)\\(-\d+)/$1$2/g;
-
-                       $what =~ s/\xff/\\d+/g;
-
-                       # Special case: IIO ABI which a parenthesis.
-                       $what =~ s/sqrt(.*)/sqrt\(.*\)/;
-
-                       # Simplify regexes with multiple .*
-                       $what =~ s#(?:\.\*){2,}##g;
-#                      $what =~ s#\.\*/\.\*#.*#g;
-
-                       # Recover dot characters
-                       $what =~ s/\xf6/\./g;
-
-                       my $leave = get_leave($what);
-
-                       my $added = 0;
-                       foreach my $l (split /\|/, $leave) {
-                               if (defined($leaf{$l})) {
-                                       next if ($leaf{$l}->{what} =~ 
m/\b$what\b/);
-                                       $leaf{$l}->{what} .= "\xac" . $what;
-                                       $added = 1;
-                               } else {
-                                       $leaf{$l}->{what} = $what;
-                                       $added = 1;
-                               }
-                       }
-                       if ($search_string && $added) {
-                               print STDERR "What: $what\n" if ($what =~ 
m#$search_string#);
-                       }
-
-               }
-       }
-       # Compile regexes
-       foreach my $l (sort keys %leaf) {
-               my @expr;
-               foreach my $w(sort split /\xac/, $leaf{$l}->{what}) {
-                       push @expr, qr /^$w$/;
-               }
-               $leaf{$l}->{expr} = \@expr;
-       }
-
-       # Take links into account
-       foreach my $link (sort keys %aliases) {
-               my $abs_file = $aliases{$link};
-               graph_add_link($abs_file, $link);
-       }
-       print STDERR "done.\n";
-
-       check_undefined_symbols;
-}
-
-# Ensure that the prefix will always end with a slash
-# While this is not needed for find, it makes the patch nicer
-# with --enable-lineno
-$prefix =~ s,/?$,/,;
-
-if ($cmd eq "undefined" || $cmd eq "search") {
-       $show_warnings = 0;
-}
-#
-# Parses all ABI files located at $prefix dir
-#
-find({wanted =>\&parse_abi, no_chdir => 1}, $prefix);
-
-print STDERR Data::Dumper->Dump([\%data], [qw(*data)]) if ($debug & 
$dbg_dump_abi_structs);
-
-#
-# Handles the command
-#
-if ($cmd eq "undefined") {
-       undefined_symbols;
-} elsif ($cmd eq "search") {
-       search_symbols;
-} else {
-       if ($cmd eq "rest") {
-               output_rest;
-       }
-
-       # Warn about duplicated ABI entries
-       foreach my $what(sort keys %symbols) {
-               my @files = @{$symbols{$what}->{file}};
-
-               next if (scalar(@files) == 1);
-
-               printf STDERR "Warning: $what is defined %d times: @files\n",
-                   scalar(@files);
-       }
-}
-
-__END__
-
-=head1 NAME
-
-get_abi.pl - parse the Linux ABI files and produce a ReST book.
-
-=head1 SYNOPSIS
-
-B<get_abi.pl> [--debug <level>] [--enable-lineno] [--man] [--help]
-              [--(no-)rst-source] [--dir=<dir>] [--show-hints]
-              [--search-string <regex>]
-              <COMMAND> [<ARGUMENT>]
-
-Where B<COMMAND> can be:
-
-=over 8
-
-B<search> I<SEARCH_REGEX> - search for I<SEARCH_REGEX> inside ABI
-
-B<rest>                   - output the ABI in ReST markup language
-
-B<validate>               - validate the ABI contents
-
-B<undefined>              - existing symbols at the system that aren't
-                            defined at Documentation/ABI
-
-=back
-
-=head1 OPTIONS
-
-=over 8
-
-=item B<--dir>
-
-Changes the location of the ABI search. By default, it uses
-the Documentation/ABI directory.
-
-=item B<--rst-source> and B<--no-rst-source>
-
-The input file may be using ReST syntax or not. Those two options allow
-selecting between a rst-compliant source ABI (B<--rst-source>), or a
-plain text that may be violating ReST spec, so it requres some escaping
-logic (B<--no-rst-source>).
-
-=item B<--enable-lineno>
-
-Enable output of .. LINENO lines.
-
-=item B<--debug> I<debug level>
-
-Print debug information according with the level, which is given by the
-following bitmask:
-
-    -  1: Debug parsing What entries from ABI files;
-    -  2: Shows what files are opened from ABI files;
-    -  4: Dump the structs used to store the contents of the ABI files.
-
-=item B<--show-hints>
-
-Show hints about possible definitions for the missing ABI symbols.
-Used only when B<undefined>.
-
-=item B<--search-string> I<regex string>
-
-Show only occurences that match a search string.
-Used only when B<undefined>.
-
-=item B<--help>
-
-Prints a brief help message and exits.
-
-=item B<--man>
-
-Prints the manual page and exits.
-
-=back
-
-=head1 DESCRIPTION
-
-Parse the Linux ABI files from ABI DIR (usually located at Documentation/ABI),
-allowing to search for ABI symbols or to produce a ReST book containing
-the Linux ABI documentation.
-
-=head1 EXAMPLES
-
-Search for all stable symbols with the word "usb":
-
-=over 8
-
-$ scripts/get_abi.pl search usb --dir Documentation/ABI/stable
-
-=back
-
-Search for all symbols that match the regex expression "usb.*cap":
-
-=over 8
-
-$ scripts/get_abi.pl search usb.*cap
-
-=back
-
-Output all obsoleted symbols in ReST format
-
-=over 8
-
-$ scripts/get_abi.pl rest --dir Documentation/ABI/obsolete
-
-=back
-
-=head1 BUGS
-
-Report bugs to Mauro Carvalho Chehab <mchehab+hua...@kernel.org>
-
-=head1 COPYRIGHT
-
-Copyright (c) 2016-2021 by Mauro Carvalho Chehab <mchehab+hua...@kernel.org>.
-
-License GPLv2: GNU GPL version 2 <http://gnu.org/licenses/gpl.html>.
-
-This is free software: you are free to change and redistribute it.
-There is NO WARRANTY, to the extent permitted by law.
-
-=cut
-- 
2.48.1


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