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-rw-r--r--scripts/Makefile.build7
-rw-r--r--scripts/Makefile.lib11
-rw-r--r--scripts/basic/.gitignore2
-rw-r--r--scripts/basic/Makefile2
-rw-r--r--scripts/basic/hash.c64
-rw-r--r--scripts/bootgraph.pl149
-rwxr-xr-xscripts/checkpatch.pl390
-rw-r--r--scripts/mod/file2alias.c75
-rw-r--r--scripts/mod/modpost.c9
-rwxr-xr-xscripts/recordmcount.pl395
10 files changed, 996 insertions, 108 deletions
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 277cfe0b710..5ed4cbf1e0e 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -198,10 +198,17 @@ cmd_modversions = \
fi;
endif
+ifdef CONFIG_FTRACE_MCOUNT_RECORD
+cmd_record_mcount = perl $(srctree)/scripts/recordmcount.pl \
+ "$(ARCH)" "$(OBJDUMP)" "$(OBJCOPY)" "$(CC)" "$(LD)" "$(NM)" "$(RM)" \
+ "$(MV)" "$(@)";
+endif
+
define rule_cc_o_c
$(call echo-cmd,checksrc) $(cmd_checksrc) \
$(call echo-cmd,cc_o_c) $(cmd_cc_o_c); \
$(cmd_modversions) \
+ $(cmd_record_mcount) \
scripts/basic/fixdep $(depfile) $@ '$(call make-cmd,cc_o_c)' > \
$(dot-target).tmp; \
rm -f $(depfile); \
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index ea48b82a370..b4ca38a2115 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -96,6 +96,14 @@ basename_flags = -D"KBUILD_BASENAME=KBUILD_STR($(call name-fix,$(basetarget)))"
modname_flags = $(if $(filter 1,$(words $(modname))),\
-D"KBUILD_MODNAME=KBUILD_STR($(call name-fix,$(modname)))")
+#hash values
+ifdef CONFIG_DYNAMIC_PRINTK_DEBUG
+debug_flags = -D"DEBUG_HASH=$(shell ./scripts/basic/hash djb2 $(@D)$(modname))"\
+ -D"DEBUG_HASH2=$(shell ./scripts/basic/hash r5 $(@D)$(modname))"
+else
+debug_flags =
+endif
+
orig_c_flags = $(KBUILD_CFLAGS) $(ccflags-y) $(CFLAGS_$(basetarget).o)
_c_flags = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(orig_c_flags))
_a_flags = $(KBUILD_AFLAGS) $(asflags-y) $(AFLAGS_$(basetarget).o)
@@ -121,7 +129,8 @@ endif
c_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(KBUILD_CPPFLAGS) \
$(__c_flags) $(modkern_cflags) \
- -D"KBUILD_STR(s)=\#s" $(basename_flags) $(modname_flags)
+ -D"KBUILD_STR(s)=\#s" $(basename_flags) $(modname_flags) \
+ $(debug_flags)
a_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(KBUILD_CPPFLAGS) \
$(__a_flags) $(modkern_aflags)
diff --git a/scripts/basic/.gitignore b/scripts/basic/.gitignore
index 7304e19782c..bf8b199ec59 100644
--- a/scripts/basic/.gitignore
+++ b/scripts/basic/.gitignore
@@ -1,3 +1,3 @@
+hash
fixdep
-split-include
docproc
diff --git a/scripts/basic/Makefile b/scripts/basic/Makefile
index 4c324a1f1e0..09559951df1 100644
--- a/scripts/basic/Makefile
+++ b/scripts/basic/Makefile
@@ -9,7 +9,7 @@
# fixdep: Used to generate dependency information during build process
# docproc: Used in Documentation/DocBook
-hostprogs-y := fixdep docproc
+hostprogs-y := fixdep docproc hash
always := $(hostprogs-y)
# fixdep is needed to compile other host programs
diff --git a/scripts/basic/hash.c b/scripts/basic/hash.c
new file mode 100644
index 00000000000..3299ad7fc8c
--- /dev/null
+++ b/scripts/basic/hash.c
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2008 Red Hat, Inc., Jason Baron <jbaron@redhat.com>
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define DYNAMIC_DEBUG_HASH_BITS 6
+
+static const char *program;
+
+static void usage(void)
+{
+ printf("Usage: %s <djb2|r5> <modname>\n", program);
+ exit(1);
+}
+
+/* djb2 hashing algorithm by Dan Bernstein. From:
+ * http://www.cse.yorku.ca/~oz/hash.html
+ */
+
+unsigned int djb2_hash(char *str)
+{
+ unsigned long hash = 5381;
+ int c;
+
+ c = *str;
+ while (c) {
+ hash = ((hash << 5) + hash) + c;
+ c = *++str;
+ }
+ return (unsigned int)(hash & ((1 << DYNAMIC_DEBUG_HASH_BITS) - 1));
+}
+
+unsigned int r5_hash(char *str)
+{
+ unsigned long hash = 0;
+ int c;
+
+ c = *str;
+ while (c) {
+ hash = (hash + (c << 4) + (c >> 4)) * 11;
+ c = *++str;
+ }
+ return (unsigned int)(hash & ((1 << DYNAMIC_DEBUG_HASH_BITS) - 1));
+}
+
+int main(int argc, char *argv[])
+{
+ program = argv[0];
+
+ if (argc != 3)
+ usage();
+ if (!strcmp(argv[1], "djb2"))
+ printf("%d\n", djb2_hash(argv[2]));
+ else if (!strcmp(argv[1], "r5"))
+ printf("%d\n", r5_hash(argv[2]));
+ else
+ usage();
+ exit(0);
+}
+
diff --git a/scripts/bootgraph.pl b/scripts/bootgraph.pl
new file mode 100644
index 00000000000..5e7316e5aa3
--- /dev/null
+++ b/scripts/bootgraph.pl
@@ -0,0 +1,149 @@
+#!/usr/bin/perl
+
+# Copyright 2008, Intel Corporation
+#
+# This file is part of the Linux kernel
+#
+# This program file is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; version 2 of the License.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+# for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program in a file named COPYING; if not, write to the
+# Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor,
+# Boston, MA 02110-1301 USA
+#
+# Authors:
+# Arjan van de Ven <arjan@linux.intel.com>
+
+
+#
+# This script turns a dmesg output into a SVG graphic that shows which
+# functions take how much time. You can view SVG graphics with various
+# programs, including Inkscape, The Gimp and Firefox.
+#
+#
+# For this script to work, the kernel needs to be compiled with the
+# CONFIG_PRINTK_TIME configuration option enabled, and with
+# "initcall_debug" passed on the kernel command line.
+#
+# usage:
+# dmesg | perl scripts/bootgraph.pl > output.svg
+#
+
+my %start, %end;
+my $done = 0;
+my $maxtime = 0;
+my $firsttime = 100;
+my $count = 0;
+my %pids;
+
+while (<>) {
+ my $line = $_;
+ if ($line =~ /([0-9\.]+)\] calling ([a-zA-Z0-9\_]+)\+/) {
+ my $func = $2;
+ if ($done == 0) {
+ $start{$func} = $1;
+ if ($1 < $firsttime) {
+ $firsttime = $1;
+ }
+ }
+ if ($line =~ /\@ ([0-9]+)/) {
+ $pids{$func} = $1;
+ }
+ $count = $count + 1;
+ }
+
+ if ($line =~ /([0-9\.]+)\] initcall ([a-zA-Z0-9\_]+)\+.*returned/) {
+ if ($done == 0) {
+ $end{$2} = $1;
+ $maxtime = $1;
+ }
+ }
+ if ($line =~ /Write protecting the/) {
+ $done = 1;
+ }
+ if ($line =~ /Freeing unused kernel memory/) {
+ $done = 1;
+ }
+}
+
+if ($count == 0) {
+ print "No data found in the dmesg. Make sure that 'printk.time=1' and\n";
+ print "'initcall_debug' are passed on the kernel command line.\n\n";
+ print "Usage: \n";
+ print " dmesg | perl scripts/bootgraph.pl > output.svg\n\n";
+ exit;
+}
+
+print "<?xml version=\"1.0\" standalone=\"no\"?> \n";
+print "<svg width=\"1000\" height=\"100%\" version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\">\n";
+
+my @styles;
+
+$styles[0] = "fill:rgb(0,0,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
+$styles[1] = "fill:rgb(0,255,0);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
+$styles[2] = "fill:rgb(255,0,20);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
+$styles[3] = "fill:rgb(255,255,20);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
+$styles[4] = "fill:rgb(255,0,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
+$styles[5] = "fill:rgb(0,255,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
+$styles[6] = "fill:rgb(0,128,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
+$styles[7] = "fill:rgb(0,255,128);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
+$styles[8] = "fill:rgb(255,0,128);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
+$styles[9] = "fill:rgb(255,255,128);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
+$styles[10] = "fill:rgb(255,128,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
+$styles[11] = "fill:rgb(128,255,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
+
+my $mult = 950.0 / ($maxtime - $firsttime);
+my $threshold = ($maxtime - $firsttime) / 60.0;
+my $stylecounter = 0;
+my %rows;
+my $rowscount = 1;
+while (($key,$value) = each %start) {
+ my $duration = $end{$key} - $start{$key};
+
+ if ($duration >= $threshold) {
+ my $s, $s2, $e, $y;
+ $pid = $pids{$key};
+
+ if (!defined($rows{$pid})) {
+ $rows{$pid} = $rowscount;
+ $rowscount = $rowscount + 1;
+ }
+ $s = ($value - $firsttime) * $mult;
+ $s2 = $s + 6;
+ $e = ($end{$key} - $firsttime) * $mult;
+ $w = $e - $s;
+
+ $y = $rows{$pid} * 150;
+ $y2 = $y + 4;
+
+ $style = $styles[$stylecounter];
+ $stylecounter = $stylecounter + 1;
+ if ($stylecounter > 11) {
+ $stylecounter = 0;
+ };
+
+ print "<rect x=\"$s\" width=\"$w\" y=\"$y\" height=\"145\" style=\"$style\"/>\n";
+ print "<text transform=\"translate($s2,$y2) rotate(90)\">$key</text>\n";
+ }
+}
+
+
+# print the time line on top
+my $time = $firsttime;
+my $step = ($maxtime - $firsttime) / 15;
+while ($time < $maxtime) {
+ my $s2 = ($time - $firsttime) * $mult;
+ my $tm = int($time * 100) / 100.0;
+ print "<text transform=\"translate($s2,89) rotate(90)\">$tm</text>\n";
+ $time = $time + $step;
+}
+
+print "</svg>\n";
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index bc677939822..f88bb3e21cd 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1,5 +1,5 @@
#!/usr/bin/perl -w
-# (c) 2001, Dave Jones. <davej@codemonkey.org.uk> (the file handling bit)
+# (c) 2001, Dave Jones. <davej@redhat.com> (the file handling bit)
# (c) 2005, Joel Schopp <jschopp@austin.ibm.com> (the ugly bit)
# (c) 2007, Andy Whitcroft <apw@uk.ibm.com> (new conditions, test suite, etc)
# Licensed under the terms of the GNU GPL License version 2
@@ -9,7 +9,7 @@ use strict;
my $P = $0;
$P =~ s@.*/@@g;
-my $V = '0.21';
+my $V = '0.24';
use Getopt::Long qw(:config no_auto_abbrev);
@@ -66,6 +66,7 @@ if ($#ARGV < 0) {
my $dbg_values = 0;
my $dbg_possible = 0;
my $dbg_type = 0;
+my $dbg_attr = 0;
for my $key (keys %debug) {
eval "\${dbg_$key} = '$debug{$key}';"
}
@@ -112,7 +113,10 @@ our $Attribute = qr{
const|
__read_mostly|
__kprobes|
- __(?:mem|cpu|dev|)(?:initdata|init)
+ __(?:mem|cpu|dev|)(?:initdata|init)|
+ ____cacheline_aligned|
+ ____cacheline_aligned_in_smp|
+ ____cacheline_internodealigned_in_smp
}x;
our $Modifier;
our $Inline = qr{inline|__always_inline|noinline};
@@ -142,6 +146,11 @@ our $UTF8 = qr {
| \xF4[\x80-\x8F][\x80-\xBF]{2} # plane 16
}x;
+our $typeTypedefs = qr{(?x:
+ (?:__)?(?:u|s|be|le)(?:\d|\d\d)|
+ atomic_t
+)};
+
our @typeList = (
qr{void},
qr{(?:unsigned\s+)?char},
@@ -155,7 +164,6 @@ our @typeList = (
qr{float},
qr{double},
qr{bool},
- qr{(?:__)?(?:u|s|be|le)(?:8|16|32|64)},
qr{struct\s+$Ident},
qr{union\s+$Ident},
qr{enum\s+$Ident},
@@ -175,6 +183,7 @@ sub build_types {
(?:$Modifier\s+|const\s+)*
(?:
(?:typeof|__typeof__)\s*\(\s*\**\s*$Ident\s*\)|
+ (?:$typeTypedefs\b)|
(?:${all}\b)
)
(?:\s+$Modifier|\s+const)*
@@ -331,7 +340,7 @@ sub sanitise_line {
$off++;
next;
}
- if (substr($line, $off, 2) eq '*/') {
+ if ($sanitise_quote eq '*/' && substr($line, $off, 2) eq '*/') {
$sanitise_quote = '';
substr($res, $off, 2, "$;$;");
$off++;
@@ -404,6 +413,7 @@ sub ctx_statement_block {
# context.
if ($off >= $len) {
for (; $remain > 0; $line++) {
+ last if (!defined $lines[$line]);
next if ($lines[$line] =~ /^-/);
$remain--;
$loff = $len;
@@ -669,6 +679,22 @@ sub ctx_has_comment {
return ($cmt ne '');
}
+sub raw_line {
+ my ($linenr, $cnt) = @_;
+
+ my $offset = $linenr - 1;
+ $cnt++;
+
+ my $line;
+ while ($cnt) {
+ $line = $rawlines[$offset++];
+ next if (defined($line) && $line =~ /^-/);
+ $cnt--;
+ }
+
+ return $line;
+}
+
sub cat_vet {
my ($vet) = @_;
my ($res, $coded);
@@ -782,9 +808,9 @@ sub annotate_values {
}
$type = 'N';
- } elsif ($cur =~ /^(if|while|typeof|__typeof__|for)\b/o) {
+ } elsif ($cur =~ /^(if|while|for)\b/o) {
print "COND($1)\n" if ($dbg_values > 1);
- $av_pending = 'N';
+ $av_pending = 'E';
$type = 'N';
} elsif ($cur =~/^(case)/o) {
@@ -792,7 +818,7 @@ sub annotate_values {
$av_pend_colon = 'C';
$type = 'N';
- } elsif ($cur =~/^(return|else|goto)/o) {
+ } elsif ($cur =~/^(return|else|goto|typeof|__typeof__)\b/o) {
print "KEYWORD($1)\n" if ($dbg_values > 1);
$type = 'N';
@@ -858,7 +884,7 @@ sub annotate_values {
print "CLOSE($1)\n" if ($dbg_values > 1);
$type = 'N';
- } elsif ($cur =~ /^(-(?![->])|\+(?!\+)|\*|\&(?!\&))/o) {
+ } elsif ($cur =~ /^(-(?![->])|\+(?!\+)|\*|\&\&|\&)/o) {
my $variant;
print "OPV($1)\n" if ($dbg_values > 1);
@@ -892,12 +918,22 @@ sub annotate_values {
sub possible {
my ($possible, $line) = @_;
- print "CHECK<$possible> ($line)\n" if ($dbg_possible > 1);
- if ($possible !~ /^(?:$Modifier|$Storage|$Type|DEFINE_\S+)$/ &&
- $possible ne 'goto' && $possible ne 'return' &&
- $possible ne 'case' && $possible ne 'else' &&
- $possible ne 'asm' && $possible ne '__asm__' &&
- $possible !~ /^(typedef|struct|enum)\b/) {
+ print "CHECK<$possible> ($line)\n" if ($dbg_possible > 2);
+ if ($possible !~ /(?:
+ ^(?:
+ $Modifier|
+ $Storage|
+ $Type|
+ DEFINE_\S+|
+ goto|
+ return|
+ case|
+ else|
+ asm|__asm__|
+ do
+ )$|
+ ^(?:typedef|struct|enum)\b
+ )/x) {
# Check for modifiers.
$possible =~ s/\s*$Storage\s*//g;
$possible =~ s/\s*$Sparse\s*//g;
@@ -915,6 +951,8 @@ sub possible {
push(@typeList, $possible);
}
build_types();
+ } else {
+ warn "NOTPOSS: $possible ($line)\n" if ($dbg_possible > 1);
}
}
@@ -954,6 +992,33 @@ sub CHK {
}
}
+sub check_absolute_file {
+ my ($absolute, $herecurr) = @_;
+ my $file = $absolute;
+
+ ##print "absolute<$absolute>\n";
+
+ # See if any suffix of this path is a path within the tree.
+ while ($file =~ s@^[^/]*/@@) {
+ if (-f "$root/$file") {
+ ##print "file<$file>\n";
+ last;
+ }
+ }
+ if (! -f _) {
+ return 0;
+ }
+
+ # It is, so see if the prefix is acceptable.
+ my $prefix = $absolute;
+ substr($prefix, -length($file)) = '';
+
+ ##print "prefix<$prefix>\n";
+ if ($prefix ne ".../") {
+ WARN("use relative pathname instead of absolute in changelog text\n" . $herecurr);
+ }
+}
+
sub process {
my $filename = shift;
@@ -991,6 +1056,7 @@ sub process {
# suppression flags
my %suppress_ifbraces;
+ my %suppress_whiletrailers;
# Pre-scan the patch sanitizing the lines.
# Pre-scan the patch looking for any __setup documentation.
@@ -1025,9 +1091,14 @@ sub process {
# edge is a close comment then we must be in a comment
# at context start.
my $edge;
- for (my $ln = $linenr + 1; $ln < ($linenr + $realcnt); $ln++) {
- next if ($line =~ /^-/);
- ($edge) = ($rawlines[$ln - 1] =~ m@(/\*|\*/)@);
+ my $cnt = $realcnt;
+ for (my $ln = $linenr + 1; $cnt > 0; $ln++) {
+ next if (defined $rawlines[$ln - 1] &&
+ $rawlines[$ln - 1] =~ /^-/);
+ $cnt--;
+ #print "RAW<$rawlines[$ln - 1]>\n";
+ ($edge) = (defined $rawlines[$ln - 1] &&
+ $rawlines[$ln - 1] =~ m@(/\*|\*/)@);
last if (defined $edge);
}
if (defined $edge && $edge eq '*/') {
@@ -1075,6 +1146,7 @@ sub process {
$linenr++;
my $rawline = $rawlines[$linenr - 1];
+ my $hunk_line = ($realcnt != 0);
#extract the line range in the file after the patch is applied
if ($line=~/^\@\@ -\d+(?:,\d+)? \+(\d+)(,(\d+))? \@\@/) {
@@ -1090,6 +1162,7 @@ sub process {
$prev_values = 'E';
%suppress_ifbraces = ();
+ %suppress_whiletrailers = ();
next;
# track the line number as we move through the hunk, note that
@@ -1125,7 +1198,7 @@ sub process {
$realfile = $1;
$realfile =~ s@^[^/]*/@@;
- if ($realfile =~ m@include/asm/@) {
+ if ($realfile =~ m@^include/asm/@) {
ERROR("do not modify files in include/asm, change architecture specific files in include/asm-<architecture>\n" . "$here$rawline\n");
}
next;
@@ -1159,6 +1232,20 @@ sub process {
$herecurr) if (!$emitted_corrupt++);
}
+# Check for absolute kernel paths.
+ if ($tree) {
+ while ($line =~ m{(?:^|\s)(/\S*)}g) {
+ my $file = $1;
+
+ if ($file =~ m{^(.*?)(?::\d+)+:?$} &&
+ check_absolute_file($1, $herecurr)) {
+ #
+ } else {
+ check_absolute_file($file, $herecurr);
+ }
+ }
+ }
+
# UTF-8 regex found at http://www.w3.org/International/questions/qa-forms-utf-8.en.php
if (($realfile =~ /^$/ || $line =~ /^\+/) &&
$rawline !~ m/^$UTF8*$/) {
@@ -1171,11 +1258,8 @@ sub process {
ERROR("Invalid UTF-8, patch and commit message should be encoded in UTF-8\n" . $hereptr);
}
-#ignore lines being removed
- if ($line=~/^-/) {next;}
-
-# check we are in a valid source file if not then ignore this hunk
- next if ($realfile !~ /\.(h|c|s|S|pl|sh)$/);
+# ignore non-hunk lines and lines being removed
+ next if (!$hunk_line || $line =~ /^-/);
#trailing whitespace
if ($line =~ /^\+.*\015/) {
@@ -1186,6 +1270,10 @@ sub process {
my $herevet = "$here\n" . cat_vet($rawline) . "\n";
ERROR("trailing whitespace\n" . $herevet);
}
+
+# check we are in a valid source file if not then ignore this hunk
+ next if ($realfile !~ /\.(h|c|s|S|pl|sh)$/);
+
#80 column limit
if ($line =~ /^\+/ && $prevrawline !~ /\/\*\*/ &&
$rawline !~ /^.\s*\*\s*\@$Ident\s/ &&
@@ -1200,8 +1288,8 @@ sub process {
WARN("adding a line without newline at end of file\n" . $herecurr);
}
-# check we are in a valid source file *.[hc] if not then ignore this hunk
- next if ($realfile !~ /\.[hc]$/);
+# check we are in a valid source file C or perl if not then ignore this hunk
+ next if ($realfile !~ /\.(h|c|pl)$/);
# at the beginning of a line any tabs must come first and anything
# more than 8 must use tabs.
@@ -1211,15 +1299,18 @@ sub process {
ERROR("code indent should use tabs where possible\n" . $herevet);
}
+# check we are in a valid C source file if not then ignore this hunk
+ next if ($realfile !~ /\.(h|c)$/);
+
# check for RCS/CVS revision markers
if ($rawline =~ /^\+.*\$(Revision|Log|Id)(?:\$|)/) {
WARN("CVS style keyword markers, these will _not_ be updated\n". $herecurr);
}
# Check for potential 'bare' types
- my ($stat, $cond, $line_nr_next, $remain_next);
+ my ($stat, $cond, $line_nr_next, $remain_next, $off_next);
if ($realcnt && $line =~ /.\s*\S/) {
- ($stat, $cond, $line_nr_next, $remain_next) =
+ ($stat, $cond, $line_nr_next, $remain_next, $off_next) =
ctx_statement_block($linenr, $realcnt, 0);
$stat =~ s/\n./\n /g;
$cond =~ s/\n./\n /g;
@@ -1240,7 +1331,7 @@ sub process {
possible($type, "A:" . $s);
# definitions in global scope can only start with types
- } elsif ($s =~ /^.(?:$Storage\s+)?(?:$Inline\s+)?(?:const\s+)?($Ident)\b/s) {
+ } elsif ($s =~ /^.(?:$Storage\s+)?(?:$Inline\s+)?(?:const\s+)?($Ident)\b\s*(?!:)/s) {
possible($1, "B:" . $s);
}
@@ -1294,10 +1385,6 @@ sub process {
ERROR("switch and case should be at the same indent\n$hereline$err");
}
}
- if ($line =~ /^.\s*(?:case\s*.*|default\s*):/g &&
- $line !~ /\G(?:\s*{)?(?:\s*$;*)(?:\s*\\)?\s*$/g) {
- ERROR("trailing statements should be on next line\n" . $herecurr);
- }
# if/while/etc brace do not go on next line, unless defining a do while loop,
# or if that brace on the next line is for something else
@@ -1338,6 +1425,91 @@ sub process {
}
}
+# Check relative indent for conditionals and blocks.
+ if ($line =~ /\b(?:(?:if|while|for)\s*\(|do\b)/ && $line !~ /^.\s*#/ && $line !~ /\}\s*while\s*/) {
+ my ($s, $c) = ($stat, $cond);
+
+ substr($s, 0, length($c), '');
+
+ # Make sure we remove the line prefixes as we have
+ # none on the first line, and are going to readd them
+ # where necessary.
+ $s =~ s/\n./\n/gs;
+
+ # Find out how long the conditional actually is.
+ my @newlines = ($c =~ /\n/gs);
+ my $cond_lines = 1 + $#newlines;
+
+ # We want to check the first line inside the block
+ # starting at the end of the conditional, so remove:
+ # 1) any blank line termination
+ # 2) any opening brace { on end of the line
+ # 3) any do (...) {
+ my $continuation = 0;
+ my $check = 0;
+ $s =~ s/^.*\bdo\b//;
+ $s =~ s/^\s*{//;
+ if ($s =~ s/^\s*\\//) {
+ $continuation = 1;
+ }
+ if ($s =~ s/^\s*?\n//) {
+ $check = 1;
+ $cond_lines++;
+ }
+
+ # Also ignore a loop construct at the end of a
+ # preprocessor statement.
+ if (($prevline =~ /^.\s*#\s*define\s/ ||
+ $prevline =~ /\\\s*$/) && $continuation == 0) {
+ $check = 0;
+ }
+
+ my $cond_ptr = -1;
+ $continuation = 0;
+ while ($cond_ptr != $cond_lines) {
+ $cond_ptr = $cond_lines;
+
+ # If we see an #else/#elif then the code
+ # is not linear.
+ if ($s =~ /^\s*\#\s*(?:else|elif)/) {
+ $check = 0;
+ }
+
+ # Ignore:
+ # 1) blank lines, they should be at 0,
+ # 2) preprocessor lines, and
+ # 3) labels.
+ if ($continuation ||
+ $s =~ /^\s*?\n/ ||
+ $s =~ /^\s*#\s*?/ ||
+ $s =~ /^\s*$Ident\s*:/) {
+ $continuation = ($s =~ /^.*?\\\n/) ? 1 : 0;
+ $s =~ s/^.*?\n//;
+ $cond_lines++;
+ }
+ }
+
+ my (undef, $sindent) = line_stats("+" . $s);
+ my $stat_real = raw_line($linenr, $cond_lines);
+
+ # Check if either of these lines are modified, else
+ # this is not this patch's fault.
+ if (!defined($stat_real) ||
+ $stat !~ /^\+/ && $stat_real !~ /^\+/) {
+ $check = 0;
+ }
+ if (defined($stat_real) && $cond_lines > 1) {
+ $stat_real = "[...]\n$stat_real";
+ }
+
+ #print "line<$line> prevline<$prevline> indent<$indent> sindent<$sindent> check<$check> continuation<$continuation> s<$s> cond_lines<$cond_lines> stat_real<$stat_real> stat<$stat>\n";
+
+ if ($check && (($sindent % 8) != 0 ||
+ ($sindent <= $indent && $s ne ''))) {
+ WARN("suspect code indent for conditional statements ($indent, $sindent)\n" . $herecurr . "$stat_real\n");
+ }
+ }
+
# Track the 'values' across context and added lines.
my $opline = $line; $opline =~ s/^./ /;
my ($curr_values, $curr_vars) =
@@ -1363,6 +1535,15 @@ sub process {
}
next;
}
+# TEST: allow direct testing of the attribute matcher.
+ if ($dbg_attr) {
+ if ($line =~ /^.\s*$Attribute\s*$/) {
+ ERROR("TEST: is attr\n" . $herecurr);
+ } elsif ($dbg_attr > 1 && $line =~ /^.+($Attribute)/) {
+ ERROR("TEST: is not attr ($1 is)\n". $herecurr);
+ }
+ next;
+ }
# check for initialisation to aggregates open brace on the next line
if ($prevline =~ /$Declare\s*$Ident\s*=\s*$/ &&
@@ -1395,13 +1576,14 @@ sub process {
if (($line =~ /EXPORT_SYMBOL.*\((.*)\)/) ||
($line =~ /EXPORT_UNUSED_SYMBOL.*\((.*)\)/)) {
my $name = $1;
- if (($prevline !~ /^}/) &&
- ($prevline !~ /^\+}/) &&
- ($prevline !~ /^ }/) &&
- ($prevline !~ /^.DECLARE_$Ident\(\Q$name\E\)/) &&
- ($prevline !~ /^.LIST_HEAD\(\Q$name\E\)/) &&
- ($prevline !~ /^.$Type\s*\(\s*\*\s*\Q$name\E\s*\)\s*\(/) &&
- ($prevline !~ /\b\Q$name\E(?:\s+$Attribute)?\s*(?:;|=|\[)/)) {
+ if ($prevline !~ /(?:
+ ^.}|
+ ^.DEFINE_$Ident\(\Q$name\E\)|
+ ^.DECLARE_$Ident\(\Q$name\E\)|
+ ^.LIST_HEAD\(\Q$name\E\)|
+ ^.$Type\s*\(\s*\*\s*\Q$name\E\s*\)\s*\(|
+ \b\Q$name\E(?:\s+$Attribute)?\s*(?:;|=|\[)
+ )/x) {
WARN("EXPORT_SYMBOL(foo); should immediately follow its function/variable\n" . $herecurr);
}
}
@@ -1422,6 +1604,7 @@ sub process {
if ($line =~ /\btypedef\s/ &&
$line !~ /\btypedef\s+$Type\s+\(\s*\*?$Ident\s*\)\s*\(/ &&
$line !~ /\btypedef\s+$Type\s+$Ident\s*\(/ &&
+ $line !~ /\b$typeTypedefs\b/ &&
$line !~ /\b__bitwise(?:__|)\b/) {
WARN("do not add new typedefs\n" . $herecurr);
}
@@ -1493,11 +1676,13 @@ sub process {
# check for spacing round square brackets; allowed:
# 1. with a type on the left -- int [] a;
-# 2. at the beginning of a line for slice initialisers -- [0..10] = 5,
+# 2. at the beginning of a line for slice initialisers -- [0...10] = 5,
+# 3. inside a curly brace -- = { [0...10] = 5 }
while ($line =~ /(.*?\s)\[/g) {
my ($where, $prefix) = ($-[1], $1);
if ($prefix !~ /$Type\s+$/ &&
- ($where != 0 || $prefix !~ /^.\s+$/)) {
+ ($where != 0 || $prefix !~ /^.\s+$/) &&
+ $prefix !~ /{\s+$/) {
ERROR("space prohibited before open square bracket '['\n" . $herecurr);
}
}
@@ -1632,7 +1817,7 @@ sub process {
# unary operator, or a cast
} elsif ($op eq '!' || $op eq '~' ||
$opv eq '*U' || $opv eq '-U' ||
- $opv eq '&U') {
+ $opv eq '&U' || $opv eq '&&U') {
if ($ctx !~ /[WEBC]x./ && $ca !~ /(?:\)|!|~|\*|-|\&|\||\+\+|\-\-|\{)$/) {
ERROR("space required before that '$op' $at\n" . $hereptr);
}
@@ -1785,7 +1970,26 @@ sub process {
# Check for illegal assignment in if conditional -- and check for trailing
# statements after the conditional.
- if ($line =~ /\b(?:if|while|for)\s*\(/ && $line !~ /^.\s*#/) {
+ if ($line =~ /do\s*(?!{)/) {
+ my ($stat_next) = ctx_statement_block($line_nr_next,
+ $remain_next, $off_next);
+ $stat_next =~ s/\n./\n /g;
+ ##print "stat<$stat> stat_next<$stat_next>\n";
+
+ if ($stat_next =~ /^\s*while\b/) {
+ # If the statement carries leading newlines,
+ # then count those as offsets.
+ my ($whitespace) =
+ ($stat_next =~ /^((?:\s*\n[+-])*\s*)/s);
+ my $offset =
+ statement_rawlines($whitespace) - 1;
+
+ $suppress_whiletrailers{$line_nr_next +
+ $offset} = 1;
+ }
+ }
+ if (!defined $suppress_whiletrailers{$linenr} &&
+ $line =~ /\b(?:if|while|for)\s*\(/ && $line !~ /^.\s*#/) {
my ($s, $c) = ($stat, $cond);
if ($c =~ /\bif\s*\(.*[^<>!=]=[^=].*/) {
@@ -1800,57 +2004,16 @@ sub process {
if (length($c) && $s !~ /^\s*{?\s*\\*\s*$/ &&
$c !~ /}\s*while\s*/)
{
- ERROR("trailing statements should be on next line\n" . $herecurr);
- }
- }
-
-# Check relative indent for conditionals and blocks.
- if ($line =~ /\b(?:(?:if|while|for)\s*\(|do\b)/ && $line !~ /^.\s*#/ && $line !~ /\}\s*while\s*/) {
- my ($s, $c) = ($stat, $cond);
-
- substr($s, 0, length($c), '');
+ # Find out how long the conditional actually is.
+ my @newlines = ($c =~ /\n/gs);
+ my $cond_lines = 1 + $#newlines;
- # Make sure we remove the line prefixes as we have
- # none on the first line, and are going to readd them
- # where necessary.
- $s =~ s/\n./\n/gs;
-
- # We want to check the first line inside the block
- # starting at the end of the conditional, so remove:
- # 1) any blank line termination
- # 2) any opening brace { on end of the line
- # 3) any do (...) {
- my $continuation = 0;
- my $check = 0;
- $s =~ s/^.*\bdo\b//;
- $s =~ s/^\s*{//;
- if ($s =~ s/^\s*\\//) {
- $continuation = 1;
- }
- if ($s =~ s/^\s*\n//) {
- $check = 1;
- }
-
- # Also ignore a loop construct at the end of a
- # preprocessor statement.
- if (($prevline =~ /^.\s*#\s*define\s/ ||
- $prevline =~ /\\\s*$/) && $continuation == 0) {
- $check = 0;
- }
-
- # Ignore the current line if its is a preprocessor
- # line.
- if ($s =~ /^\s*#\s*/) {
- $check = 0;
- }
-
- my (undef, $sindent) = line_stats("+" . $s);
-
- ##print "line<$line> prevline<$prevline> indent<$indent> sindent<$sindent> check<$check> continuation<$continuation> s<$s>\n";
+ my $stat_real = raw_line($linenr, $cond_lines);
+ if (defined($stat_real) && $cond_lines > 1) {
+ $stat_real = "[...]\n$stat_real";
+ }
- if ($check && (($sindent % 8) != 0 ||
- ($sindent <= $indent && $s ne ''))) {
- WARN("suspect code indent for conditional statements\n" . $herecurr);
+ ERROR("trailing statements should be on next line\n" . $herecurr . $stat_real);
}
}
@@ -1877,6 +2040,15 @@ sub process {
ERROR("trailing statements should be on next line\n" . $herecurr);
}
}
+# case and default should not have general statements after them
+ if ($line =~ /^.\s*(?:case\s*.*|default\s*):/g &&
+ $line !~ /\G(?:
+ (?:\s*$;*)(?:\s*{)?(?:\s*$;*)(?:\s*\\)?\s*$|
+ \s*return\s+
+ )/xg)
+ {
+ ERROR("trailing statements should be on next line\n" . $herecurr);
+ }
# Check for }<nl>else {, these must be at the same
# indent level to be relevant to each other.
@@ -1913,12 +2085,17 @@ sub process {
#warn if <asm/foo.h> is #included and <linux/foo.h> is available (uses RAW line)
if ($tree && $rawline =~ m{^.\s*\#\s*include\s*\<asm\/(.*)\.h\>}) {
- my $checkfile = "include/linux/$1.h";
- if (-f "$root/$checkfile" && $realfile ne $checkfile &&
+ my $file = "$1.h";
+ my $checkfile = "include/linux/$file";
+ if (-f "$root/$checkfile" &&
+ $realfile ne $checkfile &&
$1 ne 'irq')
{
- WARN("Use #include <linux/$1.h> instead of <asm/$1.h>\n" .
- $herecurr);
+ if ($realfile =~ m{^arch/}) {
+ CHK("Consider using #include <linux/$file> instead of <asm/$file>\n" . $herecurr);
+ } else {
+ WARN("Use #include <linux/$file> instead of <asm/$file>\n" . $herecurr);
+ }
}
}
@@ -1953,8 +2130,8 @@ sub process {
# Extract the remainder of the define (if any) and
# rip off surrounding spaces, and trailing \'s.
$rest = '';
- while ($off != 0 || ($cnt > 0 && $rest =~ /(?:^|\\)\s*$/)) {
- #print "ADDING $off <" . substr($lines[$ln - 1], $off) . ">\n";
+ while ($off != 0 || ($cnt > 0 && $rest =~ /\\\s*$/)) {
+ #print "ADDING cnt<$cnt> $off <" . substr($lines[$ln - 1], $off) . "> rest<$rest>\n";
if ($off != 0 || $lines[$ln - 1] !~ /^-/) {
$rest .= substr($lines[$ln - 1], $off) . "\n";
$cnt--;
@@ -1978,9 +2155,10 @@ sub process {
$dstat =~ s/\s*$//s;
# Flatten any parentheses and braces
- while ($dstat =~ s/\([^\(\)]*\)/1/) {
- }
- while ($dstat =~ s/\{[^\{\}]*\}/1/) {
+ while ($dstat =~ s/\([^\(\)]*\)/1/ ||
+ $dstat =~ s/\{[^\{\}]*\}/1/ ||
+ $dstat =~ s/\[[^\{\}]*\]/1/)
+ {
}
my $exceptions = qr{
@@ -2003,6 +2181,7 @@ sub process {
if ($dstat ne '' &&
$dstat !~ /^(?:$Ident|-?$Constant)$/ &&
$dstat !~ /$exceptions/ &&
+ $dstat !~ /^\.$Ident\s*=/ &&
$dstat =~ /$Operators/)
{
ERROR("Macros with complex values should be enclosed in parenthesis\n" . "$here\n$ctx\n");
@@ -2103,10 +2282,10 @@ sub process {
}
if ($level == 0 && $block =~ /^\s*\{/ && !$allowed) {
my $herectx = $here . "\n";;
- my $end = $linenr + statement_rawlines($block) - 1;
+ my $cnt = statement_rawlines($block);
- for (my $ln = $linenr - 1; $ln < $end; $ln++) {
- $herectx .= $rawlines[$ln] . "\n";;
+ for (my $n = 0; $n < $cnt; $n++) {
+ $herectx .= raw_line($linenr, $n) . "\n";;
}
WARN("braces {} are not necessary for single statement blocks\n" . $herectx);
@@ -2281,6 +2460,7 @@ sub process {
my $string;
while ($line =~ /(?:^|")([X\t]*)(?:"|$)/g) {
$string = substr($rawline, $-[1], $+[1] - $-[1]);
+ $string =~ s/%%/__/g;
if ($string =~ /(?<!%)%L[udi]/) {
WARN("\%Ld/%Lu are not-standard C, use %lld/%llu\n" . $herecurr);
last;
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index 4c9890ec252..d4dc222a74f 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -206,6 +206,20 @@ static void do_usb_table(void *symval, unsigned long size,
do_usb_entry_multi(symval + i, mod);
}
+/* Looks like: hid:bNvNpN */
+static int do_hid_entry(const char *filename,
+ struct hid_device_id *id, char *alias)
+{
+ id->vendor = TO_NATIVE(id->vendor);
+ id->product = TO_NATIVE(id->product);
+
+ sprintf(alias, "hid:b%04X", id->bus);
+ ADD(alias, "v", id->vendor != HID_ANY_ID, id->vendor);
+ ADD(alias, "p", id->product != HID_ANY_ID, id->product);
+
+ return 1;
+}
+
/* Looks like: ieee1394:venNmoNspNverN */
static int do_ieee1394_entry(const char *filename,
struct ieee1394_device_id *id, char *alias)
@@ -629,6 +643,59 @@ static int do_i2c_entry(const char *filename, struct i2c_device_id *id,
return 1;
}
+static const struct dmifield {
+ const char *prefix;
+ int field;
+} dmi_fields[] = {
+ { "bvn", DMI_BIOS_VENDOR },
+ { "bvr", DMI_BIOS_VERSION },
+ { "bd", DMI_BIOS_DATE },
+ { "svn", DMI_SYS_VENDOR },
+ { "pn", DMI_PRODUCT_NAME },
+ { "pvr", DMI_PRODUCT_VERSION },
+ { "rvn", DMI_BOARD_VENDOR },
+ { "rn", DMI_BOARD_NAME },
+ { "rvr", DMI_BOARD_VERSION },
+ { "cvn", DMI_CHASSIS_VENDOR },
+ { "ct", DMI_CHASSIS_TYPE },
+ { "cvr", DMI_CHASSIS_VERSION },
+ { NULL, DMI_NONE }
+};
+
+static void dmi_ascii_filter(char *d, const char *s)
+{
+ /* Filter out characters we don't want to see in the modalias string */
+ for (; *s; s++)
+ if (*s > ' ' && *s < 127 && *s != ':')
+ *(d++) = *s;
+
+ *d = 0;
+}
+
+
+static int do_dmi_entry(const char *filename, struct dmi_system_id *id,
+ char *alias)
+{
+ int i, j;
+
+ sprintf(alias, "dmi*");
+
+ for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) {
+ for (j = 0; j < 4; j++) {
+ if (id->matches[j].slot &&
+ id->matches[j].slot == dmi_fields[i].field) {
+ sprintf(alias + strlen(alias), ":%s*",
+ dmi_fields[i].prefix);
+ dmi_ascii_filter(alias + strlen(alias),
+ id->matches[j].substr);
+ strcat(alias, "*");
+ }
+ }
+ }
+
+ strcat(alias, ":");
+ return 1;
+}
/* Ignore any prefix, eg. some architectures prepend _ */
static inline int sym_is(const char *symbol, const char *name)
{
@@ -692,6 +759,10 @@ void handle_moddevtable(struct module *mod, struct elf_info *info,
else if (sym_is(symname, "__mod_usb_device_table"))
/* special case to handle bcdDevice ranges */
do_usb_table(symval, sym->st_size, mod);
+ else if (sym_is(symname, "__mod_hid_device_table"))
+ do_table(symval, sym->st_size,
+ sizeof(struct hid_device_id), "hid",
+ do_hid_entry, mod);
else if (sym_is(symname, "__mod_ieee1394_device_table"))
do_table(symval, sym->st_size,
sizeof(struct ieee1394_device_id), "ieee1394",
@@ -760,6 +831,10 @@ void handle_moddevtable(struct module *mod, struct elf_info *info,
do_table(symval, sym->st_size,
sizeof(struct i2c_device_id), "i2c",
do_i2c_entry, mod);
+ else if (sym_is(symname, "__mod_dmi_device_table"))
+ do_table(symval, sym->st_size,
+ sizeof(struct dmi_system_id), "dmi",
+ do_dmi_entry, mod);
free(zeros);
}
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 8e0de6a5e18..88921611b22 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -1726,6 +1726,14 @@ static void add_header(struct buffer *b, struct module *mod)
buf_printf(b, "};\n");
}
+void add_staging_flag(struct buffer *b, const char *name)
+{
+ static const char *staging_dir = "drivers/staging";
+
+ if (strncmp(staging_dir, name, strlen(staging_dir)) == 0)
+ buf_printf(b, "\nMODULE_INFO(staging, \"Y\");\n");
+}
+
/**
* Record CRCs for unresolved symbols
**/
@@ -2135,6 +2143,7 @@ int main(int argc, char **argv)
buf.pos = 0;
add_header(&buf, mod);
+ add_staging_flag(&buf, mod->name);
err |= add_versions(&buf, mod);
add_depends(&buf, mod, modules);
add_moddevtable(&buf, mod);
diff --git a/scripts/recordmcount.pl b/scripts/recordmcount.pl
new file mode 100755
index 00000000000..f56d760bd58
--- /dev/null
+++ b/scripts/recordmcount.pl
@@ -0,0 +1,395 @@
+#!/usr/bin/perl -w
+# (c) 2008, Steven Rostedt <srostedt@redhat.com>
+# Licensed under the terms of the GNU GPL License version 2
+#
+# recordmcount.pl - makes a section called __mcount_loc that holds
+# all the offsets to the calls to mcount.
+#
+#
+# What we want to end up with is a section in vmlinux called
+# __mcount_loc that contains a list of pointers to all the
+# call sites in the kernel that call mcount. Later on boot up, the kernel
+# will read this list, save the locations and turn them into nops.
+# When tracing or profiling is later enabled, these locations will then
+# be converted back to pointers to some function.
+#
+# This is no easy feat. This script is called just after the original
+# object is compiled and before it is linked.
+#
+# The references to the call sites are offsets from the section of text
+# that the call site is in. Hence, all functions in a section that
+# has a call site to mcount, will have the offset from the beginning of
+# the section and not the beginning of the function.
+#
+# The trick is to find a way to record the beginning of the section.
+# The way we do this is to look at the first function in the section
+# which will also be the location of that section after final link.
+# e.g.
+#
+# .section ".text.sched"
+# .globl my_func
+# my_func:
+# [...]
+# call mcount (offset: 0x5)
+# [...]
+# ret
+# other_func:
+# [...]
+# call mcount (offset: 0x1b)
+# [...]
+#
+# Both relocation offsets for the mcounts in the above example will be
+# offset from .text.sched. If we make another file called tmp.s with:
+#
+# .section __mcount_loc
+# .quad my_func + 0x5
+# .quad my_func + 0x1b
+#
+# We can then compile this tmp.s into tmp.o, and link it to the original
+# object.
+#
+# But this gets hard if my_func is not globl (a static function).
+# In such a case we have:
+#
+# .section ".text.sched"
+# my_func:
+# [...]
+# call mcount (offset: 0x5)
+# [...]
+# ret
+# .globl my_func
+# other_func:
+# [...]
+# call mcount (offset: 0x1b)
+# [...]
+#
+# If we make the tmp.s the same as above, when we link together with
+# the original object, we will end up with two symbols for my_func:
+# one local, one global. After final compile, we will end up with
+# an undefined reference to my_func.
+#
+# Since local objects can reference local variables, we need to find
+# a way to make tmp.o reference the local objects of the original object
+# file after it is linked together. To do this, we convert the my_func
+# into a global symbol before linking tmp.o. Then after we link tmp.o
+# we will only have a single symbol for my_func that is global.
+# We can convert my_func back into a local symbol and we are done.
+#
+# Here are the steps we take:
+#
+# 1) Record all the local symbols by using 'nm'
+# 2) Use objdump to find all the call site offsets and sections for
+# mcount.
+# 3) Compile the list into its own object.
+# 4) Do we have to deal with local functions? If not, go to step 8.
+# 5) Make an object that converts these local functions to global symbols
+# with objcopy.
+# 6) Link together this new object with the list object.
+# 7) Convert the local functions back to local symbols and rename
+# the result as the original object.
+# End.
+# 8) Link the object with the list object.
+# 9) Move the result back to the original object.
+# End.
+#
+
+use strict;
+
+my $P = $0;
+$P =~ s@.*/@@g;
+
+my $V = '0.1';
+
+if ($#ARGV < 6) {
+ print "usage: $P arch objdump objcopy cc ld nm rm mv inputfile\n";
+ print "version: $V\n";
+ exit(1);
+}
+
+my ($arch, $objdump, $objcopy, $cc, $ld, $nm, $rm, $mv, $inputfile) = @ARGV;
+
+$objdump = "objdump" if ((length $objdump) == 0);
+$objcopy = "objcopy" if ((length $objcopy) == 0);
+$cc = "gcc" if ((length $cc) == 0);
+$ld = "ld" if ((length $ld) == 0);
+$nm = "nm" if ((length $nm) == 0);
+$rm = "rm" if ((length $rm) == 0);
+$mv = "mv" if ((length $mv) == 0);
+
+#print STDERR "running: $P '$arch' '$objdump' '$objcopy' '$cc' '$ld' " .
+# "'$nm' '$rm' '$mv' '$inputfile'\n";
+
+my %locals; # List of local (static) functions
+my %weak; # List of weak functions
+my %convert; # List of local functions used that needs conversion
+
+my $type;
+my $section_regex; # Find the start of a section
+my $function_regex; # Find the name of a function
+ # (return offset and func name)
+my $mcount_regex; # Find the call site to mcount (return offset)
+
+if ($arch eq "x86_64") {
+ $section_regex = "Disassembly of section";
+ $function_regex = "^([0-9a-fA-F]+)\\s+<(.*?)>:";
+ $mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\smcount([+-]0x[0-9a-zA-Z]+)?\$";
+ $type = ".quad";
+
+ # force flags for this arch
+ $ld .= " -m elf_x86_64";
+ $objdump .= " -M x86-64";
+ $objcopy .= " -O elf64-x86-64";
+ $cc .= " -m64";
+
+} elsif ($arch eq "i386") {
+ $section_regex = "Disassembly of section";
+ $function_regex = "^([0-9a-fA-F]+)\\s+<(.*?)>:";
+ $mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\smcount\$";
+ $type = ".long";
+
+ # force flags for this arch
+ $ld .= " -m elf_i386";
+ $objdump .= " -M i386";
+ $objcopy .= " -O elf32-i386";
+ $cc .= " -m32";
+
+} else {
+ die "Arch $arch is not supported with CONFIG_FTRACE_MCOUNT_RECORD";
+}
+
+my $text_found = 0;
+my $read_function = 0;
+my $opened = 0;
+my $mcount_section = "__mcount_loc";
+
+my $dirname;
+my $filename;
+my $prefix;
+my $ext;
+
+if ($inputfile =~ m,^(.*)/([^/]*)$,) {
+ $dirname = $1;
+ $filename = $2;
+} else {
+ $dirname = ".";
+ $filename = $inputfile;
+}
+
+if ($filename =~ m,^(.*)(\.\S),) {
+ $prefix = $1;
+ $ext = $2;
+} else {
+ $prefix = $filename;
+ $ext = "";
+}
+
+my $mcount_s = $dirname . "/.tmp_mc_" . $prefix . ".s";
+my $mcount_o = $dirname . "/.tmp_mc_" . $prefix . ".o";
+
+#
+# --globalize-symbols came out in 2.17, we must test the version
+# of objcopy, and if it is less than 2.17, then we can not
+# record local functions.
+my $use_locals = 01;
+my $local_warn_once = 0;
+my $found_version = 0;
+
+open (IN, "$objcopy --version |") || die "error running $objcopy";
+while (<IN>) {
+ if (/objcopy.*\s(\d+)\.(\d+)/) {
+ my $major = $1;
+ my $minor = $2;
+
+ $found_version = 1;
+ if ($major < 2 ||
+ ($major == 2 && $minor < 17)) {
+ $use_locals = 0;
+ }
+ last;
+ }
+}
+close (IN);
+
+if (!$found_version) {
+ print STDERR "WARNING: could not find objcopy version.\n" .
+ "\tDisabling local function references.\n";
+}
+
+
+#
+# Step 1: find all the local (static functions) and weak symbols.
+# 't' is local, 'w/W' is weak (we never use a weak function)
+#
+open (IN, "$nm $inputfile|") || die "error running $nm";
+while (<IN>) {
+ if (/^[0-9a-fA-F]+\s+t\s+(\S+)/) {
+ $locals{$1} = 1;
+ } elsif (/^[0-9a-fA-F]+\s+([wW])\s+(\S+)/) {
+ $weak{$2} = $1;
+ }
+}
+close(IN);
+
+my @offsets; # Array of offsets of mcount callers
+my $ref_func; # reference function to use for offsets
+my $offset = 0; # offset of ref_func to section beginning
+
+##
+# update_funcs - print out the current mcount callers
+#
+# Go through the list of offsets to callers and write them to
+# the output file in a format that can be read by an assembler.
+#
+sub update_funcs
+{
+ return if ($#offsets < 0);
+
+ defined($ref_func) || die "No function to reference";
+
+ # A section only had a weak function, to represent it.
+ # Unfortunately, a weak function may be overwritten by another
+ # function of the same name, making all these offsets incorrect.
+ # To be safe, we simply print a warning and bail.
+ if (defined $weak{$ref_func}) {
+ print STDERR
+ "$inputfile: WARNING: referencing weak function" .
+ " $ref_func for mcount\n";
+ return;
+ }
+
+ # is this function static? If so, note this fact.
+ if (defined $locals{$ref_func}) {
+
+ # only use locals if objcopy supports globalize-symbols
+ if (!$use_locals) {
+ return;
+ }
+ $convert{$ref_func} = 1;
+ }
+
+ # Loop through all the mcount caller offsets and print a reference
+ # to the caller based from the ref_func.
+ for (my $i=0; $i <= $#offsets; $i++) {
+ if (!$opened) {
+ open(FILE, ">$mcount_s") || die "can't create $mcount_s\n";
+ $opened = 1;
+ print FILE "\t.section $mcount_section,\"a\",\@progbits\n";
+ }
+ printf FILE "\t%s %s + %d\n", $type, $ref_func, $offsets[$i] - $offset;
+ }
+}
+
+#
+# Step 2: find the sections and mcount call sites
+#
+open(IN, "$objdump -dr $inputfile|") || die "error running $objdump";
+
+my $text;
+
+while (<IN>) {
+ # is it a section?
+ if (/$section_regex/) {
+ $read_function = 1;
+ # print out any recorded offsets
+ update_funcs() if ($text_found);
+
+ # reset all markers and arrays
+ $text_found = 0;
+ undef($ref_func);
+ undef(@offsets);
+
+ # section found, now is this a start of a function?
+ } elsif ($read_function && /$function_regex/) {
+ $text_found = 1;
+ $offset = hex $1;
+ $text = $2;
+
+ # if this is either a local function or a weak function
+ # keep looking for functions that are global that
+ # we can use safely.
+ if (!defined($locals{$text}) && !defined($weak{$text})) {
+ $ref_func = $text;
+ $read_function = 0;
+ } else {
+ # if we already have a function, and this is weak, skip it
+ if (!defined($ref_func) || !defined($weak{$text})) {
+ $ref_func = $text;
+ }
+ }
+ }
+
+ # is this a call site to mcount? If so, record it to print later
+ if ($text_found && /$mcount_regex/) {
+ $offsets[$#offsets + 1] = hex $1;
+ }
+}
+
+# dump out anymore offsets that may have been found
+update_funcs() if ($text_found);
+
+# If we did not find any mcount callers, we are done (do nothing).
+if (!$opened) {
+ exit(0);
+}
+
+close(FILE);
+
+#
+# Step 3: Compile the file that holds the list of call sites to mcount.
+#
+`$cc -o $mcount_o -c $mcount_s`;
+
+my @converts = keys %convert;
+
+#
+# Step 4: Do we have sections that started with local functions?
+#
+if ($#converts >= 0) {
+ my $globallist = "";
+ my $locallist = "";
+
+ foreach my $con (@converts) {
+ $globallist .= " --globalize-symbol $con";
+ $locallist .= " --localize-symbol $con";
+ }
+
+ my $globalobj = $dirname . "/.tmp_gl_" . $filename;
+ my $globalmix = $dirname . "/.tmp_mx_" . $filename;
+
+ #
+ # Step 5: set up each local function as a global
+ #
+ `$objcopy $globallist $inputfile $globalobj`;
+
+ #
+ # Step 6: Link the global version to our list.
+ #
+ `$ld -r $globalobj $mcount_o -o $globalmix`;
+
+ #
+ # Step 7: Convert the local functions back into local symbols
+ #
+ `$objcopy $locallist $globalmix $inputfile`;
+
+ # Remove the temp files
+ `$rm $globalobj $globalmix`;
+
+} else {
+
+ my $mix = $dirname . "/.tmp_mx_" . $filename;
+
+ #
+ # Step 8: Link the object with our list of call sites object.
+ #
+ `$ld -r $inputfile $mcount_o -o $mix`;
+
+ #
+ # Step 9: Move the result back to the original object.
+ #
+ `$mv $mix $inputfile`;
+}
+
+# Clean up the temp files
+`$rm $mcount_o $mcount_s`;
+
+exit(0);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-30 17:50:55 +0000