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-rw-r--r--scripts/Makefile.lib28
-rwxr-xr-xscripts/checkpatch.pl19
-rw-r--r--scripts/gen_initramfs_list.sh2
-rwxr-xr-xscripts/get_maintainer.pl45
-rw-r--r--scripts/mod/modpost.c2
-rw-r--r--scripts/xz_wrap.sh23
6 files changed, 112 insertions, 7 deletions
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 396da16..1c702ca 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -262,6 +262,34 @@ cmd_lzo = (cat $(filter-out FORCE,$^) | \
lzop -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
(rm -f $@ ; false)
+# XZ
+# ---------------------------------------------------------------------------
+# Use xzkern to compress the kernel image and xzmisc to compress other things.
+#
+# xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage
+# of the kernel decompressor. A BCJ filter is used if it is available for
+# the target architecture. xzkern also appends uncompressed size of the data
+# using size_append. The .xz format has the size information available at
+# the end of the file too, but it's in more complex format and it's good to
+# avoid changing the part of the boot code that reads the uncompressed size.
+# Note that the bytes added by size_append will make the xz tool think that
+# the file is corrupt. This is expected.
+#
+# xzmisc doesn't use size_append, so it can be used to create normal .xz
+# files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very
+# big dictionary would increase the memory usage too much in the multi-call
+# decompression mode. A BCJ filter isn't used either.
+quiet_cmd_xzkern = XZKERN $@
+cmd_xzkern = (cat $(filter-out FORCE,$^) | \
+ sh $(srctree)/scripts/xz_wrap.sh && \
+ $(call size_append, $(filter-out FORCE,$^))) > $@ || \
+ (rm -f $@ ; false)
+
+quiet_cmd_xzmisc = XZMISC $@
+cmd_xzmisc = (cat $(filter-out FORCE,$^) | \
+ xz --check=crc32 --lzma2=dict=1MiB) > $@ || \
+ (rm -f $@ ; false)
+
# misc stuff
# ---------------------------------------------------------------------------
quote:="
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index e3c7fc0..4c0383d 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -859,7 +859,7 @@ sub annotate_values {
$av_preprocessor = 0;
}
- } elsif ($cur =~ /^(\(\s*$Type\s*)\)/) {
+ } elsif ($cur =~ /^(\(\s*$Type\s*)\)/ && $av_pending eq '_') {
print "CAST($1)\n" if ($dbg_values > 1);
push(@av_paren_type, $type);
$type = 'C';
@@ -2743,6 +2743,11 @@ sub process {
WARN("plain inline is preferred over $1\n" . $herecurr);
}
+# Check for __attribute__ packed, prefer __packed
+ if ($line =~ /\b__attribute__\s*\(\s*\(.*\bpacked\b/) {
+ WARN("__packed is preferred over __attribute__((packed))\n" . $herecurr);
+ }
+
# check for sizeof(&)
if ($line =~ /\bsizeof\s*\(\s*\&/) {
WARN("sizeof(& should be avoided\n" . $herecurr);
@@ -2785,10 +2790,15 @@ sub process {
}
# check for pointless casting of kmalloc return
- if ($line =~ /\*\s*\)\s*k[czm]alloc\b/) {
+ if ($line =~ /\*\s*\)\s*[kv][czm]alloc(_node){0,1}\b/) {
WARN("unnecessary cast may hide bugs, see http://c-faq.com/malloc/mallocnocast.html\n" . $herecurr);
}
+# check for multiple semicolons
+ if ($line =~ /;\s*;\s*$/) {
+ WARN("Statements terminations use 1 semicolon\n" . $herecurr);
+ }
+
# check for gcc specific __FUNCTION__
if ($line =~ /__FUNCTION__/) {
WARN("__func__ should be used instead of gcc specific __FUNCTION__\n" . $herecurr);
@@ -2892,6 +2902,11 @@ sub process {
ERROR("lockdep_no_validate class is reserved for device->mutex.\n" . $herecurr);
}
}
+
+ if ($line =~ /debugfs_create_file.*S_IWUGO/ ||
+ $line =~ /DEVICE_ATTR.*S_IWUGO/ ) {
+ WARN("Exporting world writable files is usually an error. Consider more restrictive permissions.\n" . $herecurr);
+ }
}
# If we have no input at all, then there is nothing to report on
diff --git a/scripts/gen_initramfs_list.sh b/scripts/gen_initramfs_list.sh
index 5958fff..55caecd 100644
--- a/scripts/gen_initramfs_list.sh
+++ b/scripts/gen_initramfs_list.sh
@@ -243,6 +243,8 @@ case "$arg" in
echo "$output_file" | grep -q "\.gz$" && compr="gzip -9 -f"
echo "$output_file" | grep -q "\.bz2$" && compr="bzip2 -9 -f"
echo "$output_file" | grep -q "\.lzma$" && compr="lzma -9 -f"
+ echo "$output_file" | grep -q "\.xz$" && \
+ compr="xz --check=crc32 --lzma2=dict=1MiB"
echo "$output_file" | grep -q "\.lzo$" && compr="lzop -9 -f"
echo "$output_file" | grep -q "\.cpio$" && compr="cat"
shift
diff --git a/scripts/get_maintainer.pl b/scripts/get_maintainer.pl
index d21ec3a..139e0ff 100755
--- a/scripts/get_maintainer.pl
+++ b/scripts/get_maintainer.pl
@@ -13,7 +13,7 @@
use strict;
my $P = $0;
-my $V = '0.26-beta6';
+my $V = '0.26';
use Getopt::Long qw(:config no_auto_abbrev);
@@ -40,7 +40,7 @@ my $email_use_mailmap = 1;
my $output_multiline = 1;
my $output_separator = ", ";
my $output_roles = 0;
-my $output_rolestats = 0;
+my $output_rolestats = 1;
my $scm = 0;
my $web = 0;
my $subsystem = 0;
@@ -494,6 +494,40 @@ if ($web) {
exit($exit);
+sub range_is_maintained {
+ my ($start, $end) = @_;
+
+ for (my $i = $start; $i < $end; $i++) {
+ my $line = $typevalue[$i];
+ if ($line =~ m/^(\C):\s*(.*)/) {
+ my $type = $1;
+ my $value = $2;
+ if ($type eq 'S') {
+ if ($value =~ /(maintain|support)/i) {
+ return 1;
+ }
+ }
+ }
+ }
+ return 0;
+}
+
+sub range_has_maintainer {
+ my ($start, $end) = @_;
+
+ for (my $i = $start; $i < $end; $i++) {
+ my $line = $typevalue[$i];
+ if ($line =~ m/^(\C):\s*(.*)/) {
+ my $type = $1;
+ my $value = $2;
+ if ($type eq 'M') {
+ return 1;
+ }
+ }
+ }
+ return 0;
+}
+
sub get_maintainers {
%email_hash_name = ();
%email_hash_address = ();
@@ -556,7 +590,9 @@ sub get_maintainers {
my $file_pd = ($file =~ tr@/@@);
$value_pd++ if (substr($value,-1,1) ne "/");
$value_pd = -1 if ($value =~ /^\.\*/);
- if ($value_pd >= $file_pd) {
+ if ($value_pd >= $file_pd &&
+ range_is_maintained($start, $end) &&
+ range_has_maintainer($start, $end)) {
$exact_pattern_match_hash{$file} = 1;
}
if ($pattern_depth == 0 ||
@@ -720,7 +756,8 @@ Other options:
--help => show this help information
Default options:
- [--email --git --m --n --l --multiline --pattern-depth=0 --remove-duplicates]
+ [--email --nogit --git-fallback --m --n --l --multiline -pattern-depth=0
+ --remove-duplicates --rolestats]
Notes:
Using "-f directory" may give unexpected results:
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 97d2259..e8fba95 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -1615,7 +1615,7 @@ static void section_rel(const char *modname, struct elf_info *elf,
* A module includes a number of sections that are discarded
* either when loaded or when used as built-in.
* For loaded modules all functions marked __init and all data
- * marked __initdata will be discarded when the module has been intialized.
+ * marked __initdata will be discarded when the module has been initialized.
* Likewise for modules used built-in the sections marked __exit
* are discarded because __exit marked function are supposed to be called
* only when a module is unloaded which never happens for built-in modules.
diff --git a/scripts/xz_wrap.sh b/scripts/xz_wrap.sh
new file mode 100644
index 0000000..17a5798
--- /dev/null
+++ b/scripts/xz_wrap.sh
@@ -0,0 +1,23 @@
+#!/bin/sh
+#
+# This is a wrapper for xz to compress the kernel image using appropriate
+# compression options depending on the architecture.
+#
+# Author: Lasse Collin <lasse.collin@tukaani.org>
+#
+# This file has been put into the public domain.
+# You can do whatever you want with this file.
+#
+
+BCJ=
+LZMA2OPTS=
+
+case $ARCH in
+ x86|x86_64) BCJ=--x86 ;;
+ powerpc) BCJ=--powerpc ;;
+ ia64) BCJ=--ia64; LZMA2OPTS=pb=4 ;;
+ arm) BCJ=--arm ;;
+ sparc) BCJ=--sparc ;;
+esac
+
+exec xz --check=crc32 $BCJ --lzma2=$LZMA2OPTS,dict=32MiB
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