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authorJani Nikula <jani.nikula@intel.com>2016-06-07 11:00:52 +0300
committerJani Nikula <jani.nikula@intel.com>2016-06-10 11:29:19 +0300
commit88c2b57da4ce3c8b5f849dc5356bdea9e2ed1134 (patch)
tree11abd7211827f7a473ce07549ccf859933f75419 /scripts
parent1ad560e43c911e19751df65dd2af21341d02eac5 (diff)
downloadlinux-88c2b57da4ce3c8b5f849dc5356bdea9e2ed1134.tar.xz
kernel-doc: add support for specifying extra files for EXPORT_SYMBOLs
If the kernel-doc comments for functions are not in the same file as the EXPORT_SYMBOL statements, the -export and -internal output selections do not work as expected. This is typically the case when the kernel-doc comments are in header files next to the function declarations and the EXPORT_SYMBOL statements are next to the function definitions in the source files. Let the user specify additional source files in which to look for the EXPORT_SYMBOLs using the new -export-file FILE option, which may be given multiple times. The pathological example for this is include/net/mac80211.h, which has all the kernel-doc documentation for the exported functions defined in a plethora of source files net/mac80211/*.c. Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'scripts')
-rwxr-xr-xscripts/kernel-doc39
1 files changed, 37 insertions, 2 deletions
diff --git a/scripts/kernel-doc b/scripts/kernel-doc
index 516d95fcefb7..9708a87c7069 100755
--- a/scripts/kernel-doc
+++ b/scripts/kernel-doc
@@ -61,10 +61,10 @@ Output format selection (mutually exclusive):
Output selection (mutually exclusive):
-export Only output documentation for symbols that have been
exported using EXPORT_SYMBOL() or EXPORT_SYMBOL_GPL()
- in the same FILE.
+ in the same FILE or any -export-file FILE.
-internal Only output documentation for symbols that have NOT been
exported using EXPORT_SYMBOL() or EXPORT_SYMBOL_GPL()
- in the same FILE.
+ in the same FILE or any -export-file FILE.
-function NAME Only output documentation for the given function(s)
or DOC: section title(s). All other functions and DOC:
sections are ignored. May be specified multiple times.
@@ -76,6 +76,9 @@ Output selection modifiers:
-no-doc-sections Do not output DOC: sections.
-enable-lineno Enable output of #define LINENO lines. Only works with
reStructuredText format.
+ -export-file FILE Specify an additional FILE in which to look for
+ EXPORT_SYMBOL() and EXPORT_SYMBOL_GPL(). To be used with
+ -export or -internal. May be specified multiple times.
Other parameters:
-v Verbose output, more warnings and other information.
@@ -336,6 +339,8 @@ use constant {
my $output_selection = OUTPUT_ALL;
my $show_not_found = 0;
+my @export_file_list;
+
my @build_time;
if (defined($ENV{'KBUILD_BUILD_TIMESTAMP'}) &&
(my $seconds = `date -d"${ENV{'KBUILD_BUILD_TIMESTAMP'}}" +%s`) ne '') {
@@ -488,6 +493,9 @@ while ($ARGV[0] =~ m/^-(.*)/) {
} elsif ($cmd eq "-internal") { # only non-exported symbols
$output_selection = OUTPUT_INTERNAL;
%function_table = ();
+ } elsif ($cmd eq "-export-file") {
+ my $file = shift @ARGV;
+ push(@export_file_list, $file);
} elsif ($cmd eq "-v") {
$verbose = 1;
} elsif (($cmd eq "-h") || ($cmd eq "--help")) {
@@ -2747,6 +2755,25 @@ sub map_filename($) {
return $file;
}
+sub process_export_file($) {
+ my ($orig_file) = @_;
+ my $file = map_filename($orig_file);
+
+ if (!open(IN,"<$file")) {
+ print STDERR "Error: Cannot open file $file\n";
+ ++$errors;
+ return;
+ }
+
+ while (<IN>) {
+ if (/$export_symbol/) {
+ $function_table{$2} = 1;
+ }
+ }
+
+ close(IN);
+}
+
sub process_file($) {
my $file;
my $identifier;
@@ -3081,6 +3108,14 @@ if (open(SOURCE_MAP, "<.tmp_filelist.txt")) {
close(SOURCE_MAP);
}
+if ($output_selection == OUTPUT_EXPORTED ||
+ $output_selection == OUTPUT_INTERNAL) {
+ foreach (@export_file_list) {
+ chomp;
+ process_export_file($_);
+ }
+}
+
foreach (@ARGV) {
chomp;
process_file($_);