+++ /dev/null
-# SPDX-License-Identifier: GPL-2.0
-#
-# Small script that visualizes the kernel feature support status
-# of an architecture.
-#
-# (If no arguments are given then it will print the host architecture's status.)
-#
-
-ARCH=${1:-$(uname -m | sed 's/x86_64/x86/' | sed 's/i386/x86/' | sed 's/s390x/s390/')}
-
-$(dirname $0)/../../scripts/get_feat.pl list --arch $ARCH
+++ /dev/null
-#
-# Small script that refreshes the kernel feature support status in place.
-#
-
-for F_FILE in Documentation/features/*/*/arch-support.txt; do
- F=$(grep "^# Kconfig:" "$F_FILE" | cut -c26-)
-
- #
- # Each feature F is identified by a pair (O, K), where 'O' can
- # be either the empty string (for 'nop') or "not" (the logical
- # negation operator '!'); other operators are not supported.
- #
- O=""
- K=$F
- if [[ "$F" == !* ]]; then
- O="not"
- K=$(echo $F | sed -e 's/^!//g')
- fi
-
- #
- # F := (O, K) is 'valid' iff there is a Kconfig file (for some
- # arch) which contains K.
- #
- # Notice that this definition entails an 'asymmetry' between
- # the case 'O = ""' and the case 'O = "not"'. E.g., F may be
- # _invalid_ if:
- #
- # [case 'O = ""']
- # 1) no arch provides support for F,
- # 2) K does not exist (e.g., it was renamed/mis-typed);
- #
- # [case 'O = "not"']
- # 3) all archs provide support for F,
- # 4) as in (2).
- #
- # The rationale for adopting this definition (and, thus, for
- # keeping the asymmetry) is:
- #
- # We want to be able to 'detect' (2) (or (4)).
- #
- # (1) and (3) may further warn the developers about the fact
- # that K can be removed.
- #
- F_VALID="false"
- for ARCH_DIR in arch/*/; do
- K_FILES=$(find $ARCH_DIR -name "Kconfig*")
- K_GREP=$(grep "$K" $K_FILES)
- if [ ! -z "$K_GREP" ]; then
- F_VALID="true"
- break
- fi
- done
- if [ "$F_VALID" = "false" ]; then
- printf "WARNING: '%s' is not a valid Kconfig\n" "$F"
- fi
-
- T_FILE="$F_FILE.tmp"
- grep "^#" $F_FILE > $T_FILE
- echo " -----------------------" >> $T_FILE
- echo " | arch |status|" >> $T_FILE
- echo " -----------------------" >> $T_FILE
- for ARCH_DIR in arch/*/; do
- ARCH=$(echo $ARCH_DIR | sed -e 's/^arch//g' | sed -e 's/\///g')
- K_FILES=$(find $ARCH_DIR -name "Kconfig*")
- K_GREP=$(grep "$K" $K_FILES)
- #
- # Arch support status values for (O, K) are updated according
- # to the following rules.
- #
- # - ("", K) is 'supported by a given arch', if there is a
- # Kconfig file for that arch which contains K;
- #
- # - ("not", K) is 'supported by a given arch', if there is
- # no Kconfig file for that arch which contains K;
- #
- # - otherwise: preserve the previous status value (if any),
- # default to 'not yet supported'.
- #
- # Notice that, according these rules, invalid features may be
- # updated/modified.
- #
- if [ "$O" = "" ] && [ ! -z "$K_GREP" ]; then
- printf " |%12s: | ok |\n" "$ARCH" >> $T_FILE
- elif [ "$O" = "not" ] && [ -z "$K_GREP" ]; then
- printf " |%12s: | ok |\n" "$ARCH" >> $T_FILE
- else
- S=$(grep -v "^#" "$F_FILE" | grep " $ARCH:")
- if [ ! -z "$S" ]; then
- echo "$S" >> $T_FILE
- else
- printf " |%12s: | TODO |\n" "$ARCH" \
- >> $T_FILE
- fi
- fi
- done
- echo " -----------------------" >> $T_FILE
- mv $T_FILE $F_FILE
-done
:license: GPL Version 2, June 1991 see Linux/COPYING for details.
The ``kernel-feat`` (:py:class:`KernelFeat`) directive calls the
- scripts/get_feat.pl script to parse the Kernel ABI files.
+ tools/docs/get_feat.pl script to parse the Kernel ABI files.
Overview of directive's argument and options.
srctree = os.path.abspath(os.environ["srctree"])
args = [
- os.path.join(srctree, 'scripts/get_feat.pl'),
+ os.path.join(srctree, 'tools/docs/get_feat.pl'),
'rest',
'--enable-fname',
'--dir',
+++ /dev/null
-#!/usr/bin/env perl
-# SPDX-License-Identifier: GPL-2.0
-
-use strict;
-use Pod::Usage;
-use Getopt::Long;
-use File::Find;
-use Fcntl ':mode';
-use Cwd 'abs_path';
-
-my $help;
-my $man;
-my $debug;
-my $arch;
-my $feat;
-my $enable_fname;
-
-my $basename = abs_path($0);
-$basename =~ s,/[^/]+$,/,;
-
-my $prefix=$basename . "../Documentation/features";
-
-# Used only at for full features output. The script will auto-adjust
-# such values for the minimal possible values
-my $status_size = 1;
-my $description_size = 1;
-
-GetOptions(
- "debug|d+" => \$debug,
- "dir=s" => \$prefix,
- 'help|?' => \$help,
- 'arch=s' => \$arch,
- 'feat=s' => \$feat,
- 'feature=s' => \$feat,
- "enable-fname" => \$enable_fname,
- man => \$man
-) or pod2usage(2);
-
-pod2usage(1) if $help;
-pod2usage(-exitstatus => 0, -verbose => 2) if $man;
-
-pod2usage(1) if (scalar @ARGV < 1 || @ARGV > 2);
-
-my ($cmd, $arg) = @ARGV;
-
-pod2usage(2) if ($cmd ne "current" && $cmd ne "rest" && $cmd ne "validate"
- && $cmd ne "ls" && $cmd ne "list");
-
-require Data::Dumper if ($debug);
-
-my %data;
-my %archs;
-
-#
-# Displays an error message, printing file name and line
-#
-sub parse_error($$$$) {
- my ($file, $ln, $msg, $data) = @_;
-
- $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 a features file, storing its contents at %data
-#
-
-my $h_name = "Feature";
-my $h_kconfig = "Kconfig";
-my $h_description = "Description";
-my $h_subsys = "Subsystem";
-my $h_status = "Status";
-my $h_arch = "Architecture";
-
-my $max_size_name = length($h_name);
-my $max_size_kconfig = length($h_kconfig);
-my $max_size_description = length($h_description);
-my $max_size_subsys = length($h_subsys);
-my $max_size_status = length($h_status);
-
-my $max_size_arch = 0;
-my $max_size_arch_with_header;
-my $max_description_word = 0;
-
-sub parse_feat {
- my $file = $File::Find::name;
-
- my $mode = (stat($file))[2];
- return if ($mode & S_IFDIR);
- return if ($file =~ m,($prefix)/arch-support.txt,);
- return if (!($file =~ m,arch-support.txt$,));
-
- if ($enable_fname) {
- printf ".. FILE %s\n", abs_path($file);
- }
-
- my $subsys = "";
- $subsys = $2 if ( m,.*($prefix)/([^/]+).*,);
-
- if (length($subsys) > $max_size_subsys) {
- $max_size_subsys = length($subsys);
- }
-
- my $name;
- my $kconfig;
- my $description;
- my $comments = "";
- my $last_status;
- my $ln;
- my %arch_table;
-
- print STDERR "Opening $file\n" if ($debug > 1);
- open IN, $file;
-
- while(<IN>) {
- $ln++;
-
- if (m/^\#\s+Feature\s+name:\s*(.*\S)/) {
- $name = $1;
- if (length($name) > $max_size_name) {
- $max_size_name = length($name);
- }
- next;
- }
- if (m/^\#\s+Kconfig:\s*(.*\S)/) {
- $kconfig = $1;
- if (length($kconfig) > $max_size_kconfig) {
- $max_size_kconfig = length($kconfig);
- }
- next;
- }
- if (m/^\#\s+description:\s*(.*\S)/) {
- $description = $1;
- if (length($description) > $max_size_description) {
- $max_size_description = length($description);
- }
-
- foreach my $word (split /\s+/, $description) {
- if (length($word) > $max_description_word) {
- $max_description_word = length($word);
- }
- }
-
- next;
- }
- next if (m/^\\s*$/);
- next if (m/^\s*\-+\s*$/);
- next if (m/^\s*\|\s*arch\s*\|\s*status\s*\|\s*$/);
-
- if (m/^\#\s*(.*)/) {
- $comments .= "$1\n";
- next;
- }
- if (m/^\s*\|\s*(\S+):\s*\|\s*(\S+)\s*\|\s*$/) {
- my $a = $1;
- my $status = $2;
-
- if (length($status) > $max_size_status) {
- $max_size_status = length($status);
- }
- if (length($a) > $max_size_arch) {
- $max_size_arch = length($a);
- }
-
- $status = "---" if ($status =~ m/^\.\.$/);
-
- $archs{$a} = 1;
- $arch_table{$a} = $status;
- next;
- }
-
- #Everything else is an error
- parse_error($file, $ln, "line is invalid", $_);
- }
- close IN;
-
- if (!$name) {
- parse_error($file, $ln, "Feature name not found", "");
- return;
- }
-
- parse_error($file, $ln, "Subsystem not found", "") if (!$subsys);
- parse_error($file, $ln, "Kconfig not found", "") if (!$kconfig);
- parse_error($file, $ln, "Description not found", "") if (!$description);
-
- if (!%arch_table) {
- parse_error($file, $ln, "Architecture table not found", "");
- return;
- }
-
- $data{$name}->{where} = $file;
- $data{$name}->{subsys} = $subsys;
- $data{$name}->{kconfig} = $kconfig;
- $data{$name}->{description} = $description;
- $data{$name}->{comments} = $comments;
- $data{$name}->{table} = \%arch_table;
-
- $max_size_arch_with_header = $max_size_arch + length($h_arch);
-}
-
-#
-# Output feature(s) for a given architecture
-#
-sub output_arch_table {
- my $title = "Feature status on $arch architecture";
-
- print "=" x length($title) . "\n";
- print "$title\n";
- print "=" x length($title) . "\n\n";
-
- print "=" x $max_size_subsys;
- print " ";
- print "=" x $max_size_name;
- print " ";
- print "=" x $max_size_kconfig;
- print " ";
- print "=" x $max_size_status;
- print " ";
- print "=" x $max_size_description;
- print "\n";
- printf "%-${max_size_subsys}s ", $h_subsys;
- printf "%-${max_size_name}s ", $h_name;
- printf "%-${max_size_kconfig}s ", $h_kconfig;
- printf "%-${max_size_status}s ", $h_status;
- printf "%-${max_size_description}s\n", $h_description;
- print "=" x $max_size_subsys;
- print " ";
- print "=" x $max_size_name;
- print " ";
- print "=" x $max_size_kconfig;
- print " ";
- print "=" x $max_size_status;
- print " ";
- print "=" x $max_size_description;
- print "\n";
-
- foreach my $name (sort {
- ($data{$a}->{subsys} cmp $data{$b}->{subsys}) ||
- ("\L$a" cmp "\L$b")
- } keys %data) {
- next if ($feat && $name ne $feat);
-
- my %arch_table = %{$data{$name}->{table}};
- printf "%-${max_size_subsys}s ", $data{$name}->{subsys};
- printf "%-${max_size_name}s ", $name;
- printf "%-${max_size_kconfig}s ", $data{$name}->{kconfig};
- printf "%-${max_size_status}s ", $arch_table{$arch};
- printf "%-s\n", $data{$name}->{description};
- }
-
- print "=" x $max_size_subsys;
- print " ";
- print "=" x $max_size_name;
- print " ";
- print "=" x $max_size_kconfig;
- print " ";
- print "=" x $max_size_status;
- print " ";
- print "=" x $max_size_description;
- print "\n";
-}
-
-#
-# list feature(s) for a given architecture
-#
-sub list_arch_features {
- print "#\n# Kernel feature support matrix of the '$arch' architecture:\n#\n";
-
- foreach my $name (sort {
- ($data{$a}->{subsys} cmp $data{$b}->{subsys}) ||
- ("\L$a" cmp "\L$b")
- } keys %data) {
- next if ($feat && $name ne $feat);
-
- my %arch_table = %{$data{$name}->{table}};
-
- my $status = $arch_table{$arch};
- $status = " " x ((4 - length($status)) / 2) . $status;
-
- printf " %${max_size_subsys}s/ ", $data{$name}->{subsys};
- printf "%-${max_size_name}s: ", $name;
- printf "%-5s| ", $status;
- printf "%${max_size_kconfig}s # ", $data{$name}->{kconfig};
- printf " %s\n", $data{$name}->{description};
- }
-}
-
-#
-# Output a feature on all architectures
-#
-sub output_feature {
- my $title = "Feature $feat";
-
- print "=" x length($title) . "\n";
- print "$title\n";
- print "=" x length($title) . "\n\n";
-
- print ":Subsystem: $data{$feat}->{subsys} \n" if ($data{$feat}->{subsys});
- print ":Kconfig: $data{$feat}->{kconfig} \n" if ($data{$feat}->{kconfig});
-
- my $desc = $data{$feat}->{description};
- $desc =~ s/^([a-z])/\U$1/;
- $desc =~ s/\.?\s*//;
- print "\n$desc.\n\n";
-
- my $com = $data{$feat}->{comments};
- $com =~ s/^\s+//;
- $com =~ s/\s+$//;
- if ($com) {
- print "Comments\n";
- print "--------\n\n";
- print "$com\n\n";
- }
-
- print "=" x $max_size_arch_with_header;
- print " ";
- print "=" x $max_size_status;
- print "\n";
-
- printf "%-${max_size_arch}s ", $h_arch;
- printf "%-${max_size_status}s", $h_status . "\n";
-
- print "=" x $max_size_arch_with_header;
- print " ";
- print "=" x $max_size_status;
- print "\n";
-
- my %arch_table = %{$data{$feat}->{table}};
- foreach my $arch (sort keys %arch_table) {
- printf "%-${max_size_arch}s ", $arch;
- printf "%-${max_size_status}s\n", $arch_table{$arch};
- }
-
- print "=" x $max_size_arch_with_header;
- print " ";
- print "=" x $max_size_status;
- print "\n";
-}
-
-#
-# Output all features for all architectures
-#
-
-sub matrix_lines($$$) {
- my $desc_size = shift;
- my $status_size = shift;
- my $header = shift;
- my $fill;
- my $ln_marker;
-
- if ($header) {
- $ln_marker = "=";
- } else {
- $ln_marker = "-";
- }
-
- $fill = $ln_marker;
-
- print "+";
- print $fill x $max_size_name;
- print "+";
- print $fill x $desc_size;
- print "+";
- print $ln_marker x $status_size;
- print "+\n";
-}
-
-sub output_matrix {
- my $title = "Feature status on all architectures";
- my $notcompat = "Not compatible";
-
- print "=" x length($title) . "\n";
- print "$title\n";
- print "=" x length($title) . "\n\n";
-
- my $desc_title = "$h_kconfig / $h_description";
-
- my $desc_size = $max_size_kconfig + 4;
- if (!$description_size) {
- $desc_size = $max_size_description if ($max_size_description > $desc_size);
- } else {
- $desc_size = $description_size if ($description_size > $desc_size);
- }
- $desc_size = $max_description_word if ($max_description_word > $desc_size);
-
- $desc_size = length($desc_title) if (length($desc_title) > $desc_size);
-
- $max_size_status = length($notcompat) if (length($notcompat) > $max_size_status);
-
- # Ensure that the status will fit
- my $min_status_size = $max_size_status + $max_size_arch + 6;
- $status_size = $min_status_size if ($status_size < $min_status_size);
-
-
- my $cur_subsys = "";
- foreach my $name (sort {
- ($data{$a}->{subsys} cmp $data{$b}->{subsys}) or
- ("\L$a" cmp "\L$b")
- } keys %data) {
-
- if ($cur_subsys ne $data{$name}->{subsys}) {
- if ($cur_subsys ne "") {
- printf "\n";
- }
-
- $cur_subsys = $data{$name}->{subsys};
-
- my $title = "Subsystem: $cur_subsys";
- print "$title\n";
- print "=" x length($title) . "\n\n";
-
-
- matrix_lines($desc_size, $status_size, 0);
-
- printf "|%-${max_size_name}s", $h_name;
- printf "|%-${desc_size}s", $desc_title;
-
- printf "|%-${status_size}s|\n", "Status per architecture";
- matrix_lines($desc_size, $status_size, 1);
- }
-
- my %arch_table = %{$data{$name}->{table}};
- my $cur_status = "";
-
- my (@lines, @descs);
- my $line = "";
- foreach my $arch (sort {
- ($arch_table{$b} cmp $arch_table{$a}) or
- ("\L$a" cmp "\L$b")
- } keys %arch_table) {
-
- my $status = $arch_table{$arch};
-
- if ($status eq "---") {
- $status = $notcompat;
- }
-
- if ($status ne $cur_status) {
- if ($line ne "") {
- push @lines, $line;
- $line = "";
- }
- $line = "- **" . $status . "**: " . $arch;
- } elsif (length($line) + length ($arch) + 2 < $status_size) {
- $line .= ", " . $arch;
- } else {
- push @lines, $line;
- $line = " " . $arch;
- }
- $cur_status = $status;
- }
- push @lines, $line if ($line ne "");
-
- my $description = $data{$name}->{description};
- while (length($description) > $desc_size) {
- my $d = substr $description, 0, $desc_size;
-
- # Ensure that it will end on a space
- # if it can't, it means that the size is too small
- # Instead of aborting it, let's print what we have
- if (!($d =~ s/^(.*)\s+.*/$1/)) {
- $d = substr $d, 0, -1;
- push @descs, "$d\\";
- $description =~ s/^\Q$d\E//;
- } else {
- push @descs, $d;
- $description =~ s/^\Q$d\E\s+//;
- }
- }
- push @descs, $description;
-
- # Ensure that the full description will be printed
- push @lines, "" while (scalar(@lines) < 2 + scalar(@descs));
-
- my $ln = 0;
- for my $line(@lines) {
- if (!$ln) {
- printf "|%-${max_size_name}s", $name;
- printf "|%-${desc_size}s", "``" . $data{$name}->{kconfig} . "``";
- } elsif ($ln >= 2 && scalar(@descs)) {
- printf "|%-${max_size_name}s", "";
- printf "|%-${desc_size}s", shift @descs;
- } else {
- printf "|%-${max_size_name}s", "";
- printf "|%-${desc_size}s", "";
- }
-
- printf "|%-${status_size}s|\n", $line;
-
- $ln++;
- }
- matrix_lines($desc_size, $status_size, 0);
- }
-}
-
-
-#
-# Parses all feature files located at $prefix dir
-#
-find({wanted =>\&parse_feat, no_chdir => 1}, $prefix);
-
-print STDERR Data::Dumper->Dump([\%data], [qw(*data)]) if ($debug);
-
-#
-# Handles the command
-#
-if ($cmd eq "current") {
- $arch = qx(uname -m | sed 's/x86_64/x86/' | sed 's/i386/x86/' | sed 's/s390x/s390/');
- $arch =~s/\s+$//;
-}
-
-if ($cmd eq "ls" or $cmd eq "list") {
- if (!$arch) {
- $arch = qx(uname -m | sed 's/x86_64/x86/' | sed 's/i386/x86/' | sed 's/s390x/s390/');
- $arch =~s/\s+$//;
- }
-
- list_arch_features;
-
- exit;
-}
-
-if ($cmd ne "validate") {
- if ($arch) {
- output_arch_table;
- } elsif ($feat) {
- output_feature;
- } else {
- output_matrix;
- }
-}
-
-__END__
-
-=head1 NAME
-
-get_feat.pl - parse the Linux Feature files and produce a ReST book.
-
-=head1 SYNOPSIS
-
-B<get_feat.pl> [--debug] [--man] [--help] [--dir=<dir>] [--arch=<arch>]
- [--feature=<feature>|--feat=<feature>] <COMAND> [<ARGUMENT>]
-
-Where <COMMAND> can be:
-
-=over 8
-
-B<current> - output table in ReST compatible ASCII format
- with features for this machine's architecture
-
-B<rest> - output table(s) in ReST compatible ASCII format
- with features in ReST markup language. The output
- is affected by --arch or --feat/--feature flags.
-
-B<validate> - validate the contents of the files under
- Documentation/features.
-
-B<ls> or B<list> - list features for this machine's architecture,
- using an easier to parse format.
- The output is affected by --arch flag.
-
-=back
-
-=head1 OPTIONS
-
-=over 8
-
-=item B<--arch>
-
-Output features for an specific architecture, optionally filtering for
-a single specific feature.
-
-=item B<--feat> or B<--feature>
-
-Output features for a single specific feature.
-
-=item B<--dir>
-
-Changes the location of the Feature files. By default, it uses
-the Documentation/features directory.
-
-=item B<--enable-fname>
-
-Prints the file name of the feature files. This can be used in order to
-track dependencies during documentation build.
-
-=item B<--debug>
-
-Put the script in verbose mode, useful for debugging. Can be called multiple
-times, to increase verbosity.
-
-=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 feature files from Documentation/features (by default),
-optionally producing results at ReST format.
-
-It supports output data per architecture, per feature or a
-feature x arch matrix.
-
-When used with B<rest> command, it will use either one of the tree formats:
-
-If neither B<--arch> or B<--feature> arguments are used, it will output a
-matrix with features per architecture.
-
-If B<--arch> argument is used, it will output the features availability for
-a given architecture.
-
-If B<--feat> argument is used, it will output the content of the feature
-file using ReStructured Text markup.
-
-=head1 BUGS
-
-Report bugs to Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
-
-=head1 COPYRIGHT
-
-Copyright (c) 2019 by Mauro Carvalho Chehab <mchehab+samsung@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
--- /dev/null
+#
+# Small script that refreshes the kernel feature support status in place.
+#
+
+for F_FILE in Documentation/features/*/*/arch-support.txt; do
+ F=$(grep "^# Kconfig:" "$F_FILE" | cut -c26-)
+
+ #
+ # Each feature F is identified by a pair (O, K), where 'O' can
+ # be either the empty string (for 'nop') or "not" (the logical
+ # negation operator '!'); other operators are not supported.
+ #
+ O=""
+ K=$F
+ if [[ "$F" == !* ]]; then
+ O="not"
+ K=$(echo $F | sed -e 's/^!//g')
+ fi
+
+ #
+ # F := (O, K) is 'valid' iff there is a Kconfig file (for some
+ # arch) which contains K.
+ #
+ # Notice that this definition entails an 'asymmetry' between
+ # the case 'O = ""' and the case 'O = "not"'. E.g., F may be
+ # _invalid_ if:
+ #
+ # [case 'O = ""']
+ # 1) no arch provides support for F,
+ # 2) K does not exist (e.g., it was renamed/mis-typed);
+ #
+ # [case 'O = "not"']
+ # 3) all archs provide support for F,
+ # 4) as in (2).
+ #
+ # The rationale for adopting this definition (and, thus, for
+ # keeping the asymmetry) is:
+ #
+ # We want to be able to 'detect' (2) (or (4)).
+ #
+ # (1) and (3) may further warn the developers about the fact
+ # that K can be removed.
+ #
+ F_VALID="false"
+ for ARCH_DIR in arch/*/; do
+ K_FILES=$(find $ARCH_DIR -name "Kconfig*")
+ K_GREP=$(grep "$K" $K_FILES)
+ if [ ! -z "$K_GREP" ]; then
+ F_VALID="true"
+ break
+ fi
+ done
+ if [ "$F_VALID" = "false" ]; then
+ printf "WARNING: '%s' is not a valid Kconfig\n" "$F"
+ fi
+
+ T_FILE="$F_FILE.tmp"
+ grep "^#" $F_FILE > $T_FILE
+ echo " -----------------------" >> $T_FILE
+ echo " | arch |status|" >> $T_FILE
+ echo " -----------------------" >> $T_FILE
+ for ARCH_DIR in arch/*/; do
+ ARCH=$(echo $ARCH_DIR | sed -e 's/^arch//g' | sed -e 's/\///g')
+ K_FILES=$(find $ARCH_DIR -name "Kconfig*")
+ K_GREP=$(grep "$K" $K_FILES)
+ #
+ # Arch support status values for (O, K) are updated according
+ # to the following rules.
+ #
+ # - ("", K) is 'supported by a given arch', if there is a
+ # Kconfig file for that arch which contains K;
+ #
+ # - ("not", K) is 'supported by a given arch', if there is
+ # no Kconfig file for that arch which contains K;
+ #
+ # - otherwise: preserve the previous status value (if any),
+ # default to 'not yet supported'.
+ #
+ # Notice that, according these rules, invalid features may be
+ # updated/modified.
+ #
+ if [ "$O" = "" ] && [ ! -z "$K_GREP" ]; then
+ printf " |%12s: | ok |\n" "$ARCH" >> $T_FILE
+ elif [ "$O" = "not" ] && [ -z "$K_GREP" ]; then
+ printf " |%12s: | ok |\n" "$ARCH" >> $T_FILE
+ else
+ S=$(grep -v "^#" "$F_FILE" | grep " $ARCH:")
+ if [ ! -z "$S" ]; then
+ echo "$S" >> $T_FILE
+ else
+ printf " |%12s: | TODO |\n" "$ARCH" \
+ >> $T_FILE
+ fi
+ fi
+ done
+ echo " -----------------------" >> $T_FILE
+ mv $T_FILE $F_FILE
+done
--- /dev/null
+#!/usr/bin/env perl
+# SPDX-License-Identifier: GPL-2.0
+
+use strict;
+use Pod::Usage;
+use Getopt::Long;
+use File::Find;
+use Fcntl ':mode';
+use Cwd 'abs_path';
+
+my $help;
+my $man;
+my $debug;
+my $arch;
+my $feat;
+my $enable_fname;
+
+my $basename = abs_path($0);
+$basename =~ s,/[^/]+$,/,;
+
+my $prefix=$basename . "../../Documentation/features";
+
+# Used only at for full features output. The script will auto-adjust
+# such values for the minimal possible values
+my $status_size = 1;
+my $description_size = 1;
+
+GetOptions(
+ "debug|d+" => \$debug,
+ "dir=s" => \$prefix,
+ 'help|?' => \$help,
+ 'arch=s' => \$arch,
+ 'feat=s' => \$feat,
+ 'feature=s' => \$feat,
+ "enable-fname" => \$enable_fname,
+ man => \$man
+) or pod2usage(2);
+
+pod2usage(1) if $help;
+pod2usage(-exitstatus => 0, -verbose => 2) if $man;
+
+pod2usage(1) if (scalar @ARGV < 1 || @ARGV > 2);
+
+my ($cmd, $arg) = @ARGV;
+
+pod2usage(2) if ($cmd ne "current" && $cmd ne "rest" && $cmd ne "validate"
+ && $cmd ne "ls" && $cmd ne "list");
+
+require Data::Dumper if ($debug);
+
+my %data;
+my %archs;
+
+#
+# Displays an error message, printing file name and line
+#
+sub parse_error($$$$) {
+ my ($file, $ln, $msg, $data) = @_;
+
+ $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 a features file, storing its contents at %data
+#
+
+my $h_name = "Feature";
+my $h_kconfig = "Kconfig";
+my $h_description = "Description";
+my $h_subsys = "Subsystem";
+my $h_status = "Status";
+my $h_arch = "Architecture";
+
+my $max_size_name = length($h_name);
+my $max_size_kconfig = length($h_kconfig);
+my $max_size_description = length($h_description);
+my $max_size_subsys = length($h_subsys);
+my $max_size_status = length($h_status);
+
+my $max_size_arch = 0;
+my $max_size_arch_with_header;
+my $max_description_word = 0;
+
+sub parse_feat {
+ my $file = $File::Find::name;
+
+ my $mode = (stat($file))[2];
+ return if ($mode & S_IFDIR);
+ return if ($file =~ m,($prefix)/arch-support.txt,);
+ return if (!($file =~ m,arch-support.txt$,));
+
+ if ($enable_fname) {
+ printf ".. FILE %s\n", abs_path($file);
+ }
+
+ my $subsys = "";
+ $subsys = $2 if ( m,.*($prefix)/([^/]+).*,);
+
+ if (length($subsys) > $max_size_subsys) {
+ $max_size_subsys = length($subsys);
+ }
+
+ my $name;
+ my $kconfig;
+ my $description;
+ my $comments = "";
+ my $last_status;
+ my $ln;
+ my %arch_table;
+
+ print STDERR "Opening $file\n" if ($debug > 1);
+ open IN, $file;
+
+ while(<IN>) {
+ $ln++;
+
+ if (m/^\#\s+Feature\s+name:\s*(.*\S)/) {
+ $name = $1;
+ if (length($name) > $max_size_name) {
+ $max_size_name = length($name);
+ }
+ next;
+ }
+ if (m/^\#\s+Kconfig:\s*(.*\S)/) {
+ $kconfig = $1;
+ if (length($kconfig) > $max_size_kconfig) {
+ $max_size_kconfig = length($kconfig);
+ }
+ next;
+ }
+ if (m/^\#\s+description:\s*(.*\S)/) {
+ $description = $1;
+ if (length($description) > $max_size_description) {
+ $max_size_description = length($description);
+ }
+
+ foreach my $word (split /\s+/, $description) {
+ if (length($word) > $max_description_word) {
+ $max_description_word = length($word);
+ }
+ }
+
+ next;
+ }
+ next if (m/^\\s*$/);
+ next if (m/^\s*\-+\s*$/);
+ next if (m/^\s*\|\s*arch\s*\|\s*status\s*\|\s*$/);
+
+ if (m/^\#\s*(.*)/) {
+ $comments .= "$1\n";
+ next;
+ }
+ if (m/^\s*\|\s*(\S+):\s*\|\s*(\S+)\s*\|\s*$/) {
+ my $a = $1;
+ my $status = $2;
+
+ if (length($status) > $max_size_status) {
+ $max_size_status = length($status);
+ }
+ if (length($a) > $max_size_arch) {
+ $max_size_arch = length($a);
+ }
+
+ $status = "---" if ($status =~ m/^\.\.$/);
+
+ $archs{$a} = 1;
+ $arch_table{$a} = $status;
+ next;
+ }
+
+ #Everything else is an error
+ parse_error($file, $ln, "line is invalid", $_);
+ }
+ close IN;
+
+ if (!$name) {
+ parse_error($file, $ln, "Feature name not found", "");
+ return;
+ }
+
+ parse_error($file, $ln, "Subsystem not found", "") if (!$subsys);
+ parse_error($file, $ln, "Kconfig not found", "") if (!$kconfig);
+ parse_error($file, $ln, "Description not found", "") if (!$description);
+
+ if (!%arch_table) {
+ parse_error($file, $ln, "Architecture table not found", "");
+ return;
+ }
+
+ $data{$name}->{where} = $file;
+ $data{$name}->{subsys} = $subsys;
+ $data{$name}->{kconfig} = $kconfig;
+ $data{$name}->{description} = $description;
+ $data{$name}->{comments} = $comments;
+ $data{$name}->{table} = \%arch_table;
+
+ $max_size_arch_with_header = $max_size_arch + length($h_arch);
+}
+
+#
+# Output feature(s) for a given architecture
+#
+sub output_arch_table {
+ my $title = "Feature status on $arch architecture";
+
+ print "=" x length($title) . "\n";
+ print "$title\n";
+ print "=" x length($title) . "\n\n";
+
+ print "=" x $max_size_subsys;
+ print " ";
+ print "=" x $max_size_name;
+ print " ";
+ print "=" x $max_size_kconfig;
+ print " ";
+ print "=" x $max_size_status;
+ print " ";
+ print "=" x $max_size_description;
+ print "\n";
+ printf "%-${max_size_subsys}s ", $h_subsys;
+ printf "%-${max_size_name}s ", $h_name;
+ printf "%-${max_size_kconfig}s ", $h_kconfig;
+ printf "%-${max_size_status}s ", $h_status;
+ printf "%-${max_size_description}s\n", $h_description;
+ print "=" x $max_size_subsys;
+ print " ";
+ print "=" x $max_size_name;
+ print " ";
+ print "=" x $max_size_kconfig;
+ print " ";
+ print "=" x $max_size_status;
+ print " ";
+ print "=" x $max_size_description;
+ print "\n";
+
+ foreach my $name (sort {
+ ($data{$a}->{subsys} cmp $data{$b}->{subsys}) ||
+ ("\L$a" cmp "\L$b")
+ } keys %data) {
+ next if ($feat && $name ne $feat);
+
+ my %arch_table = %{$data{$name}->{table}};
+ printf "%-${max_size_subsys}s ", $data{$name}->{subsys};
+ printf "%-${max_size_name}s ", $name;
+ printf "%-${max_size_kconfig}s ", $data{$name}->{kconfig};
+ printf "%-${max_size_status}s ", $arch_table{$arch};
+ printf "%-s\n", $data{$name}->{description};
+ }
+
+ print "=" x $max_size_subsys;
+ print " ";
+ print "=" x $max_size_name;
+ print " ";
+ print "=" x $max_size_kconfig;
+ print " ";
+ print "=" x $max_size_status;
+ print " ";
+ print "=" x $max_size_description;
+ print "\n";
+}
+
+#
+# list feature(s) for a given architecture
+#
+sub list_arch_features {
+ print "#\n# Kernel feature support matrix of the '$arch' architecture:\n#\n";
+
+ foreach my $name (sort {
+ ($data{$a}->{subsys} cmp $data{$b}->{subsys}) ||
+ ("\L$a" cmp "\L$b")
+ } keys %data) {
+ next if ($feat && $name ne $feat);
+
+ my %arch_table = %{$data{$name}->{table}};
+
+ my $status = $arch_table{$arch};
+ $status = " " x ((4 - length($status)) / 2) . $status;
+
+ printf " %${max_size_subsys}s/ ", $data{$name}->{subsys};
+ printf "%-${max_size_name}s: ", $name;
+ printf "%-5s| ", $status;
+ printf "%${max_size_kconfig}s # ", $data{$name}->{kconfig};
+ printf " %s\n", $data{$name}->{description};
+ }
+}
+
+#
+# Output a feature on all architectures
+#
+sub output_feature {
+ my $title = "Feature $feat";
+
+ print "=" x length($title) . "\n";
+ print "$title\n";
+ print "=" x length($title) . "\n\n";
+
+ print ":Subsystem: $data{$feat}->{subsys} \n" if ($data{$feat}->{subsys});
+ print ":Kconfig: $data{$feat}->{kconfig} \n" if ($data{$feat}->{kconfig});
+
+ my $desc = $data{$feat}->{description};
+ $desc =~ s/^([a-z])/\U$1/;
+ $desc =~ s/\.?\s*//;
+ print "\n$desc.\n\n";
+
+ my $com = $data{$feat}->{comments};
+ $com =~ s/^\s+//;
+ $com =~ s/\s+$//;
+ if ($com) {
+ print "Comments\n";
+ print "--------\n\n";
+ print "$com\n\n";
+ }
+
+ print "=" x $max_size_arch_with_header;
+ print " ";
+ print "=" x $max_size_status;
+ print "\n";
+
+ printf "%-${max_size_arch}s ", $h_arch;
+ printf "%-${max_size_status}s", $h_status . "\n";
+
+ print "=" x $max_size_arch_with_header;
+ print " ";
+ print "=" x $max_size_status;
+ print "\n";
+
+ my %arch_table = %{$data{$feat}->{table}};
+ foreach my $arch (sort keys %arch_table) {
+ printf "%-${max_size_arch}s ", $arch;
+ printf "%-${max_size_status}s\n", $arch_table{$arch};
+ }
+
+ print "=" x $max_size_arch_with_header;
+ print " ";
+ print "=" x $max_size_status;
+ print "\n";
+}
+
+#
+# Output all features for all architectures
+#
+
+sub matrix_lines($$$) {
+ my $desc_size = shift;
+ my $status_size = shift;
+ my $header = shift;
+ my $fill;
+ my $ln_marker;
+
+ if ($header) {
+ $ln_marker = "=";
+ } else {
+ $ln_marker = "-";
+ }
+
+ $fill = $ln_marker;
+
+ print "+";
+ print $fill x $max_size_name;
+ print "+";
+ print $fill x $desc_size;
+ print "+";
+ print $ln_marker x $status_size;
+ print "+\n";
+}
+
+sub output_matrix {
+ my $title = "Feature status on all architectures";
+ my $notcompat = "Not compatible";
+
+ print "=" x length($title) . "\n";
+ print "$title\n";
+ print "=" x length($title) . "\n\n";
+
+ my $desc_title = "$h_kconfig / $h_description";
+
+ my $desc_size = $max_size_kconfig + 4;
+ if (!$description_size) {
+ $desc_size = $max_size_description if ($max_size_description > $desc_size);
+ } else {
+ $desc_size = $description_size if ($description_size > $desc_size);
+ }
+ $desc_size = $max_description_word if ($max_description_word > $desc_size);
+
+ $desc_size = length($desc_title) if (length($desc_title) > $desc_size);
+
+ $max_size_status = length($notcompat) if (length($notcompat) > $max_size_status);
+
+ # Ensure that the status will fit
+ my $min_status_size = $max_size_status + $max_size_arch + 6;
+ $status_size = $min_status_size if ($status_size < $min_status_size);
+
+
+ my $cur_subsys = "";
+ foreach my $name (sort {
+ ($data{$a}->{subsys} cmp $data{$b}->{subsys}) or
+ ("\L$a" cmp "\L$b")
+ } keys %data) {
+
+ if ($cur_subsys ne $data{$name}->{subsys}) {
+ if ($cur_subsys ne "") {
+ printf "\n";
+ }
+
+ $cur_subsys = $data{$name}->{subsys};
+
+ my $title = "Subsystem: $cur_subsys";
+ print "$title\n";
+ print "=" x length($title) . "\n\n";
+
+
+ matrix_lines($desc_size, $status_size, 0);
+
+ printf "|%-${max_size_name}s", $h_name;
+ printf "|%-${desc_size}s", $desc_title;
+
+ printf "|%-${status_size}s|\n", "Status per architecture";
+ matrix_lines($desc_size, $status_size, 1);
+ }
+
+ my %arch_table = %{$data{$name}->{table}};
+ my $cur_status = "";
+
+ my (@lines, @descs);
+ my $line = "";
+ foreach my $arch (sort {
+ ($arch_table{$b} cmp $arch_table{$a}) or
+ ("\L$a" cmp "\L$b")
+ } keys %arch_table) {
+
+ my $status = $arch_table{$arch};
+
+ if ($status eq "---") {
+ $status = $notcompat;
+ }
+
+ if ($status ne $cur_status) {
+ if ($line ne "") {
+ push @lines, $line;
+ $line = "";
+ }
+ $line = "- **" . $status . "**: " . $arch;
+ } elsif (length($line) + length ($arch) + 2 < $status_size) {
+ $line .= ", " . $arch;
+ } else {
+ push @lines, $line;
+ $line = " " . $arch;
+ }
+ $cur_status = $status;
+ }
+ push @lines, $line if ($line ne "");
+
+ my $description = $data{$name}->{description};
+ while (length($description) > $desc_size) {
+ my $d = substr $description, 0, $desc_size;
+
+ # Ensure that it will end on a space
+ # if it can't, it means that the size is too small
+ # Instead of aborting it, let's print what we have
+ if (!($d =~ s/^(.*)\s+.*/$1/)) {
+ $d = substr $d, 0, -1;
+ push @descs, "$d\\";
+ $description =~ s/^\Q$d\E//;
+ } else {
+ push @descs, $d;
+ $description =~ s/^\Q$d\E\s+//;
+ }
+ }
+ push @descs, $description;
+
+ # Ensure that the full description will be printed
+ push @lines, "" while (scalar(@lines) < 2 + scalar(@descs));
+
+ my $ln = 0;
+ for my $line(@lines) {
+ if (!$ln) {
+ printf "|%-${max_size_name}s", $name;
+ printf "|%-${desc_size}s", "``" . $data{$name}->{kconfig} . "``";
+ } elsif ($ln >= 2 && scalar(@descs)) {
+ printf "|%-${max_size_name}s", "";
+ printf "|%-${desc_size}s", shift @descs;
+ } else {
+ printf "|%-${max_size_name}s", "";
+ printf "|%-${desc_size}s", "";
+ }
+
+ printf "|%-${status_size}s|\n", $line;
+
+ $ln++;
+ }
+ matrix_lines($desc_size, $status_size, 0);
+ }
+}
+
+
+#
+# Parses all feature files located at $prefix dir
+#
+find({wanted =>\&parse_feat, no_chdir => 1}, $prefix);
+
+print STDERR Data::Dumper->Dump([\%data], [qw(*data)]) if ($debug);
+
+#
+# Handles the command
+#
+if ($cmd eq "current") {
+ $arch = qx(uname -m | sed 's/x86_64/x86/' | sed 's/i386/x86/' | sed 's/s390x/s390/');
+ $arch =~s/\s+$//;
+}
+
+if ($cmd eq "ls" or $cmd eq "list") {
+ if (!$arch) {
+ $arch = qx(uname -m | sed 's/x86_64/x86/' | sed 's/i386/x86/' | sed 's/s390x/s390/');
+ $arch =~s/\s+$//;
+ }
+
+ list_arch_features;
+
+ exit;
+}
+
+if ($cmd ne "validate") {
+ if ($arch) {
+ output_arch_table;
+ } elsif ($feat) {
+ output_feature;
+ } else {
+ output_matrix;
+ }
+}
+
+__END__
+
+=head1 NAME
+
+get_feat.pl - parse the Linux Feature files and produce a ReST book.
+
+=head1 SYNOPSIS
+
+B<get_feat.pl> [--debug] [--man] [--help] [--dir=<dir>] [--arch=<arch>]
+ [--feature=<feature>|--feat=<feature>] <COMAND> [<ARGUMENT>]
+
+Where <COMMAND> can be:
+
+=over 8
+
+B<current> - output table in ReST compatible ASCII format
+ with features for this machine's architecture
+
+B<rest> - output table(s) in ReST compatible ASCII format
+ with features in ReST markup language. The output
+ is affected by --arch or --feat/--feature flags.
+
+B<validate> - validate the contents of the files under
+ Documentation/features.
+
+B<ls> or B<list> - list features for this machine's architecture,
+ using an easier to parse format.
+ The output is affected by --arch flag.
+
+=back
+
+=head1 OPTIONS
+
+=over 8
+
+=item B<--arch>
+
+Output features for an specific architecture, optionally filtering for
+a single specific feature.
+
+=item B<--feat> or B<--feature>
+
+Output features for a single specific feature.
+
+=item B<--dir>
+
+Changes the location of the Feature files. By default, it uses
+the Documentation/features directory.
+
+=item B<--enable-fname>
+
+Prints the file name of the feature files. This can be used in order to
+track dependencies during documentation build.
+
+=item B<--debug>
+
+Put the script in verbose mode, useful for debugging. Can be called multiple
+times, to increase verbosity.
+
+=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 feature files from Documentation/features (by default),
+optionally producing results at ReST format.
+
+It supports output data per architecture, per feature or a
+feature x arch matrix.
+
+When used with B<rest> command, it will use either one of the tree formats:
+
+If neither B<--arch> or B<--feature> arguments are used, it will output a
+matrix with features per architecture.
+
+If B<--arch> argument is used, it will output the features availability for
+a given architecture.
+
+If B<--feat> argument is used, it will output the content of the feature
+file using ReStructured Text markup.
+
+=head1 BUGS
+
+Report bugs to Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
+
+=head1 COPYRIGHT
+
+Copyright (c) 2019 by Mauro Carvalho Chehab <mchehab+samsung@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
--- /dev/null
+# SPDX-License-Identifier: GPL-2.0
+#
+# Small script that visualizes the kernel feature support status
+# of an architecture.
+#
+# (If no arguments are given then it will print the host architecture's status.)
+#
+
+ARCH=${1:-$(uname -m | sed 's/x86_64/x86/' | sed 's/i386/x86/' | sed 's/s390x/s390/')}
+
+$(dirname $0)/get_feat.pl list --arch $ARCH
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