Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild

* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild: (33 commits)
  xtensa: use DATA_DATA in xtensa
  powerpc: add missing DATA_DATA to powerpc
  cris: use DATA_DATA in cris
  kallsyms: remove usage of memmem and _GNU_SOURCE from scripts/kallsyms.c
  kbuild: use -fno-optimize-sibling-calls unconditionally
  kconfig: reset generated values only if Kconfig and .config agree.
  kbuild: fix the warning when running make tags
  kconfig: strip 'CONFIG_' automatically in kernel configuration search
  kbuild: use POSIX BRE in headers install target
  Whitelist references from __dbe_table to .init
  modpost white list pattern adjustment
  kbuild: do section mismatch check on full vmlinux
  kbuild: whitelist references from variables named _timer to .init.text
  kbuild: remove hardcoded _logo names from modpost
  kbuild: remove hardcoded apic_es7000 from modpost
  kbuild: warn about references from .init.text to .exit.text
  kbuild: consolidate section checks
  kbuild: refactor code in modpost to improve maintainability
  kbuild: ignore section mismatch warnings originating from .note section
  kbuild: .paravirtprobe section is obsolete, so modpost doesn't need to handle it
  ...

1 files changed, 52 insertions, 2 deletions

diff --git a/scripts/cleanfile b/scripts/cleanfile
index f1ba8aa58a40..cefd29e52298 100755
--- a/scripts/cleanfile
+++ b/scripts/cleanfile
@@ -7,7 +7,9 @@
 use bytes;
 use File::Basename;
 
-#
+# Default options
+$max_width = 79;
+
 # Clean up space-tab sequences, either by removing spaces or
 # replacing them with tabs.
 sub clean_space_tabs($)
@@ -48,9 +50,49 @@ sub clean_space_tabs($)
     return $lo;
 }
 
+# Compute the visual width of a string
+sub strwidth($) {
+    no bytes;			# Tab alignment depends on characters
+
+    my($li) = @_;
+    my($c, $i);
+    my $pos = 0;
+    my $mlen = 0;
+
+    for ($i = 0; $i < length($li); $i++) {
+	$c = substr($li,$i,1);
+	if ($c eq "\t") {
+	    $pos = ($pos+8) & ~7;
+	} elsif ($c eq "\n") {
+	    $mlen = $pos if ($pos > $mlen);
+	    $pos = 0;
+	} else {
+	    $pos++;
+	}
+    }
+
+    $mlen = $pos if ($pos > $mlen);
+    return $mlen;
+}
+
 $name = basename($0);
 
-foreach $f ( @ARGV ) {
+@files = ();
+
+while (defined($a = shift(@ARGV))) {
+    if ($a =~ /^-/) {
+	if ($a eq '-width' || $a eq '-w') {
+	    $max_width = shift(@ARGV)+0;
+	} else {
+	    print STDERR "Usage: $name [-width #] files...\n";
+	    exit 1;
+	}
+    } else {
+	push(@files, $a);
+    }
+}
+
+foreach $f ( @files ) {
     print STDERR "$name: $f\n";
 
     if (! -f $f) {
@@ -90,8 +132,10 @@ foreach $f ( @ARGV ) {
 
     @blanks = ();
     @lines  = ();
+    $lineno = 0;
 
     while ( defined($line = <FILE>) ) {
+	$lineno++;
 	$in_bytes += length($line);
 	$line =~ s/[ \t\r]*$//;		# Remove trailing spaces
 	$line = clean_space_tabs($line);
@@ -107,6 +151,12 @@ foreach $f ( @ARGV ) {
 	    @blanks = ();
 	    $blank_bytes = 0;
 	}
+
+	$l_width = strwidth($line);
+	if ($max_width && $l_width > $max_width) {
+	    print STDERR
+		"$f:$lineno: line exceeds $max_width characters ($l_width)\n";
+	}
     }
 
     # Any blanks at the end of the file are discarded