Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / scripts / checkversion.pl

diff --git a/kernel/scripts/checkversion.pl b/kernel/scripts/checkversion.pl
new file mode 100755 (executable)
index 0000000..5e490a8
--- /dev/null
+++ b/kernel/scripts/checkversion.pl
@@ -0,0 +1,71 @@
+#! /usr/bin/perl
+#
+# checkversion find uses of LINUX_VERSION_CODE or KERNEL_VERSION
+# without including <linux/version.h>, or cases of
+# including <linux/version.h> that don't need it.
+# Copyright (C) 2003, Randy Dunlap <rdunlap@xenotime.net>
+
+use strict;
+
+$| = 1;
+
+my $debugging;
+
+foreach my $file (@ARGV) {
+    next if $file =~ "include/linux/version\.h";
+    # Open this file.
+    open( my $f, '<', $file )
+      or die "Can't open $file: $!\n";
+
+    # Initialize variables.
+    my ($fInComment, $fInString, $fUseVersion);
+    my $iLinuxVersion = 0;
+
+    while (<$f>) {
+       # Strip comments.
+       $fInComment && (s+^.*?\*/+ +o ? ($fInComment = 0) : next);
+       m+/\*+o && (s+/\*.*?\*/+ +go, (s+/\*.*$+ +o && ($fInComment = 1)));
+
+       # Pick up definitions.
+       if ( m/^\s*#/o ) {
+           $iLinuxVersion      = $. if m/^\s*#\s*include\s*"linux\/version\.h"/o;
+       }
+
+       # Strip strings.
+       $fInString && (s+^.*?"+ +o ? ($fInString = 0) : next);
+       m+"+o && (s+".*?"+ +go, (s+".*$+ +o && ($fInString = 1)));
+
+       # Pick up definitions.
+       if ( m/^\s*#/o ) {
+           $iLinuxVersion      = $. if m/^\s*#\s*include\s*<linux\/version\.h>/o;
+       }
+
+       # Look for uses: LINUX_VERSION_CODE, KERNEL_VERSION, UTS_RELEASE
+       if (($_ =~ /LINUX_VERSION_CODE/) || ($_ =~ /\WKERNEL_VERSION/)) {
+           $fUseVersion = 1;
+            last if $iLinuxVersion;
+        }
+    }
+
+    # Report used version IDs without include?
+    if ($fUseVersion && ! $iLinuxVersion) {
+       print "$file: $.: need linux/version.h\n";
+    }
+
+    # Report superfluous includes.
+    if ($iLinuxVersion && ! $fUseVersion) {
+       print "$file: $iLinuxVersion linux/version.h not needed.\n";
+    }
+
+    # debug: report OK results:
+    if ($debugging) {
+        if ($iLinuxVersion && $fUseVersion) {
+           print "$file: version use is OK ($iLinuxVersion)\n";
+        }
+        if (! $iLinuxVersion && ! $fUseVersion) {
+           print "$file: version use is OK (none)\n";
+        }
+    }
+
+    close($f);
+}