my @ignore = ();
my $help = 0;
my $configuration_file = ".checkpatch.conf";
-my $max_line_length = 80;
+my $max_line_length = 100;
my $ignore_perl_version = 0;
my $minimum_perl_version = 5.10.0;
my $min_conf_desc_length = 4;
my $conststructsfile = "$D/const_structs.checkpatch";
my $typedefsfile = "";
my $color = "auto";
-my $allow_c99_comments = 1; # Can be overridden by --ignore C99_COMMENT_TOLERANCE
-# git output parsing needs US English output, so first set backtick child process LANGUAGE
-my $git_command ='export LANGUAGE=en_US.UTF-8; git';
+my $allow_c99_comments = 1;
sub help {
my ($exitcode) = @_;
--types TYPE(,TYPE2...) show only these comma separated message types
--ignore TYPE(,TYPE2...) ignore various comma separated message types
--show-types show the specific message type in the output
- --max-line-length=n set the maximum line length, if exceeded, warn
+ --max-line-length=n set the maximum line length, (default $max_line_length)
+ if exceeded, warn on patches
+ requires --strict for use with --file
--min-conf-desc-length=n set the min description length, if shorter, warn
--root=PATH PATH to the kernel tree root
--no-summary suppress the per-file summary
seq_vprintf|seq_printf|seq_puts
)};
-our $allocFunctions = qr{(?x:
- (?:(?:devm_)?
- (?:kv|k|v)[czm]alloc(?:_node|_array)? |
- kstrdup(?:_const)? |
- kmemdup(?:_nul)?) |
- (?:\w+)?alloc_skb(?:ip_align)? |
- # dev_alloc_skb/netdev_alloc_skb, et al
- dma_alloc_coherent
-)};
-
our $signature_tags = qr{(?xi:
Signed-off-by:|
- Co-developed-by:|
Acked-by:|
Tested-by:|
Reviewed-by:|
}
$mode_perms_search = "(?:${mode_perms_search})";
-our %deprecated_apis = (
- "synchronize_rcu_bh" => "synchronize_rcu",
- "synchronize_rcu_bh_expedited" => "synchronize_rcu_expedited",
- "call_rcu_bh" => "call_rcu",
- "rcu_barrier_bh" => "rcu_barrier",
- "synchronize_sched" => "synchronize_rcu",
- "synchronize_sched_expedited" => "synchronize_rcu_expedited",
- "call_rcu_sched" => "call_rcu",
- "rcu_barrier_sched" => "rcu_barrier",
- "get_state_synchronize_sched" => "get_state_synchronize_rcu",
- "cond_synchronize_sched" => "cond_synchronize_rcu",
-);
-
-#Create a search pattern for all these strings to speed up a loop below
-our $deprecated_apis_search = "";
-foreach my $entry (keys %deprecated_apis) {
- $deprecated_apis_search .= '|' if ($deprecated_apis_search ne "");
- $deprecated_apis_search .= $entry;
-}
-$deprecated_apis_search = "(?:${deprecated_apis_search})";
-
our $mode_perms_world_writable = qr{
S_IWUGO |
S_IWOTH |
$camelcase_seeded = 1;
if (-e ".git") {
- my $git_last_include_commit = `${git_command} log --no-merges --pretty=format:"%h%n" -1 -- include`;
+ my $git_last_include_commit = `git log --no-merges --pretty=format:"%h%n" -1 -- include`;
chomp $git_last_include_commit;
$camelcase_cache = ".checkpatch-camelcase.git.$git_last_include_commit";
} else {
}
if (-e ".git") {
- $files = `${git_command} ls-files "include/*.h"`;
+ $files = `git ls-files "include/*.h"`;
@include_files = split('\n', $files);
}
return ($id, $desc) if ((which("git") eq "") || !(-e ".git"));
- my $output = `${git_command} log --no-color --format='%H %s' -1 $commit 2>&1`;
+ my $output = `git log --no-color --format='%H %s' -1 $commit 2>&1`;
$output =~ s/^\s*//gm;
my @lines = split("\n", $output);
return ($id, $desc) if ($#lines < 0);
- if ($lines[0] =~ /^error: short SHA1 $commit is ambiguous/) {
+ if ($lines[0] =~ /^error: short SHA1 $commit is ambiguous\./) {
# Maybe one day convert this block of bash into something that returns
# all matching commit ids, but it's very slow...
#
} else {
$git_range = "-1 $commit_expr";
}
- my $lines = `${git_command} log --no-color --no-merges --pretty=format:'%H %s' $git_range`;
+ my $lines = `git log --no-color --no-merges --pretty=format:'%H %s' $git_range`;
foreach my $line (split(/\n/, $lines)) {
$line =~ /^([0-9a-fA-F]{40,40}) (.*)$/;
next if (!defined($1) || !defined($2));
}
my $vname;
-$allow_c99_comments = !defined $ignore_type{"C99_COMMENT_TOLERANCE"};
for my $filename (@ARGV) {
my $FILE;
if ($git) {
} else {
$signatures{$sig_nospace} = 1;
}
-
-# Check Co-developed-by: immediately followed by Signed-off-by: with same name and email
- if ($sign_off =~ /^co-developed-by:$/i) {
- if ($email eq $author) {
- WARN("BAD_SIGN_OFF",
- "Co-developed-by: should not be used to attribute nominal patch author '$author'\n" . "$here\n" . $rawline);
- }
- if (!defined $lines[$linenr]) {
- WARN("BAD_SIGN_OFF",
- "Co-developed-by: must be immediately followed by Signed-off-by:\n" . "$here\n" . $rawline);
- } elsif ($rawlines[$linenr] !~ /^\s*signed-off-by:\s*(.*)/i) {
- WARN("BAD_SIGN_OFF",
- "Co-developed-by: must be immediately followed by Signed-off-by:\n" . "$here\n" . $rawline . "\n" .$rawlines[$linenr]);
- } elsif ($1 ne $email) {
- WARN("BAD_SIGN_OFF",
- "Co-developed-by and Signed-off-by: name/email do not match \n" . "$here\n" . $rawline . "\n" .$rawlines[$linenr]);
- }
- }
}
# Check email subject for common tools that don't need to be mentioned
($line =~ /^\s*(?:WARNING:|BUG:)/ ||
$line =~ /^\s*\[\s*\d+\.\d{6,6}\s*\]/ ||
# timestamp
- $line =~ /^\s*\[\<[0-9a-fA-F]{8,}\>\]/) ||
- $line =~ /^(?:\s+\w+:\s+[0-9a-fA-F]+){3,3}/ ||
- $line =~ /^\s*\#\d+\s*\[[0-9a-fA-F]+\]\s*\w+ at [0-9a-fA-F]+/) {
- # stack dump address styles
+ $line =~ /^\s*\[\<[0-9a-fA-F]{8,}\>\]/)) {
+ # stack dump address
$commit_log_possible_stack_dump = 1;
}
}
}
-# check for invalid commit id
- if ($in_commit_log && $line =~ /(^fixes:|\bcommit)\s+([0-9a-f]{6,40})\b/i) {
- my $id;
- my $description;
- ($id, $description) = git_commit_info($2, undef, undef);
- if (!defined($id)) {
- WARN("UNKNOWN_COMMIT_ID",
- "Unknown commit id '$2', maybe rebased or not pulled?\n" . $herecurr);
- }
- }
-
# ignore non-hunk lines and lines being removed
next if (!$hunk_line || $line =~ /^-/);
my @compats = $rawline =~ /\"([a-zA-Z0-9\-\,\.\+_]+)\"/g;
my $dt_path = $root . "/Documentation/devicetree/bindings/";
- my $vp_file = $dt_path . "vendor-prefixes.yaml";
+ my $vp_file = $dt_path . "vendor-prefixes.txt";
foreach my $compat (@compats) {
my $compat2 = $compat;
next if $compat !~ /^([a-zA-Z0-9\-]+)\,/;
my $vendor = $1;
- `grep -Eq "\\"\\^\Q$vendor\E,\\.\\*\\":" $vp_file`;
+ `grep -Eq "^$vendor\\b" $vp_file`;
if ( $? >> 8 ) {
WARN("UNDOCUMENTED_DT_STRING",
"DT compatible string vendor \"$vendor\" appears un-documented -- check $vp_file\n" . $herecurr);
$comment = '..';
}
-# check SPDX comment style for .[chsS] files
- if ($realfile =~ /\.[chsS]$/ &&
- $rawline =~ /SPDX-License-Identifier:/ &&
- $rawline !~ m@^\+\s*\Q$comment\E\s*@) {
- WARN("SPDX_LICENSE_TAG",
- "Improper SPDX comment style for '$realfile', please use '$comment' instead\n" . $herecurr);
- }
-
if ($comment !~ /^$/ &&
- $rawline !~ m@^\+\Q$comment\E SPDX-License-Identifier: @) {
- WARN("SPDX_LICENSE_TAG",
- "Missing or malformed SPDX-License-Identifier tag in line $checklicenseline\n" . $herecurr);
+ $rawline !~ /^\+\Q$comment\E SPDX-License-Identifier: /) {
+ WARN("SPDX_LICENSE_TAG",
+ "Missing or malformed SPDX-License-Identifier tag in line $checklicenseline\n" . $herecurr);
} elsif ($rawline =~ /(SPDX-License-Identifier: .*)/) {
- my $spdx_license = $1;
- if (!is_SPDX_License_valid($spdx_license)) {
- WARN("SPDX_LICENSE_TAG",
- "'$spdx_license' is not supported in LICENSES/...\n" . $herecurr);
- }
+ my $spdx_license = $1;
+ if (!is_SPDX_License_valid($spdx_license)) {
+ WARN("SPDX_LICENSE_TAG",
+ "'$spdx_license' is not supported in LICENSES/...\n" . $herecurr);
+ }
}
}
}
# check we are in a valid source file if not then ignore this hunk
next if ($realfile !~ /\.(h|c|s|S|sh|dtsi|dts)$/);
-# check for using SPDX-License-Identifier on the wrong line number
- if ($realline != $checklicenseline &&
- $rawline =~ /\bSPDX-License-Identifier:/ &&
- substr($line, @-, @+ - @-) eq "$;" x (@+ - @-)) {
- WARN("SPDX_LICENSE_TAG",
- "Misplaced SPDX-License-Identifier tag - use line $checklicenseline instead\n" . $herecurr);
- }
-
# line length limit (with some exclusions)
#
# There are a few types of lines that may extend beyond $max_line_length:
if ($msg_type ne "" &&
(show_type("LONG_LINE") || show_type($msg_type))) {
- WARN($msg_type,
- "line over $max_line_length characters\n" . $herecurr);
+ my $msg_level = \&WARN;
+ $msg_level = \&CHK if ($file);
+ &{$msg_level}($msg_type,
+ "line length of $length exceeds $max_line_length columns\n" . $herecurr);
}
}
WARN("STATIC_CONST_CHAR_ARRAY",
"static const char * array should probably be static const char * const\n" .
$herecurr);
- }
-
-# check for initialized const char arrays that should be static const
- if ($line =~ /^\+\s*const\s+(char|unsigned\s+char|_*u8|(?:[us]_)?int8_t)\s+\w+\s*\[\s*(?:\w+\s*)?\]\s*=\s*"/) {
- if (WARN("STATIC_CONST_CHAR_ARRAY",
- "const array should probably be static const\n" . $herecurr) &&
- $fix) {
- $fixed[$fixlinenr] =~ s/(^.\s*)const\b/${1}static const/;
- }
- }
+ }
# check for static char foo[] = "bar" declarations.
if ($line =~ /\bstatic\s+char\s+(\w+)\s*\[\s*\]\s*=\s*"/) {
WARN("STATIC_CONST_CHAR_ARRAY",
"static char array declaration should probably be static const char\n" .
$herecurr);
- }
+ }
# check for const <foo> const where <foo> is not a pointer or array type
if ($sline =~ /\bconst\s+($BasicType)\s+const\b/) {
# closing brace should have a space following it when it has anything
# on the line
- if ($line =~ /}(?!(?:,|;|\)|\}))\S/) {
+ if ($line =~ /}(?!(?:,|;|\)))\S/) {
if (ERROR("SPACING",
"space required after that close brace '}'\n" . $herecurr) &&
$fix) {
while ($line =~ m{($Constant|$Lval)}g) {
my $var = $1;
+#gcc binary extension
+ if ($var =~ /^$Binary$/) {
+ if (WARN("GCC_BINARY_CONSTANT",
+ "Avoid gcc v4.3+ binary constant extension: <$var>\n" . $herecurr) &&
+ $fix) {
+ my $hexval = sprintf("0x%x", oct($var));
+ $fixed[$fixlinenr] =~
+ s/\b$var\b/$hexval/;
+ }
+ }
+
#CamelCase
if ($var !~ /^$Constant$/ &&
$var =~ /[A-Z][a-z]|[a-z][A-Z]/ &&
next if ($arg =~ /\.\.\./);
next if ($arg =~ /^type$/i);
my $tmp_stmt = $define_stmt;
- $tmp_stmt =~ s/\b(sizeof|typeof|__typeof__|__builtin\w+|typecheck\s*\(\s*$Type\s*,|\#+)\s*\(*\s*$arg\s*\)*\b//g;
+ $tmp_stmt =~ s/\b(typeof|__typeof__|__builtin\w+|typecheck\s*\(\s*$Type\s*,|\#+)\s*\(*\s*$arg\s*\)*\b//g;
$tmp_stmt =~ s/\#+\s*$arg\b//g;
$tmp_stmt =~ s/\b$arg\s*\#\#//g;
my $use_cnt = () = $tmp_stmt =~ /\b$arg\b/g;
my ($s, $c) = ctx_statement_block($linenr - 3, $realcnt, 0);
# print("line: <$line>\nprevline: <$prevline>\ns: <$s>\nc: <$c>\n\n\n");
- if ($s =~ /(?:^|\n)[ \+]\s*(?:$Type\s*)?\Q$testval\E\s*=\s*(?:\([^\)]*\)\s*)?\s*$allocFunctions\s*\(/ &&
- $s !~ /\b__GFP_NOWARN\b/ ) {
+ if ($s =~ /(?:^|\n)[ \+]\s*(?:$Type\s*)?\Q$testval\E\s*=\s*(?:\([^\)]*\)\s*)?\s*(?:devm_)?(?:[kv][czm]alloc(?:_node|_array)?\b|kstrdup|kmemdup|(?:dev_)?alloc_skb)/) {
WARN("OOM_MESSAGE",
"Possible unnecessary 'out of memory' message\n" . $hereprev);
}
# ignore udelay's < 10, however
if (! ($delay < 10) ) {
CHK("USLEEP_RANGE",
- "usleep_range is preferred over udelay; see Documentation/timers/timers-howto.rst\n" . $herecurr);
+ "usleep_range is preferred over udelay; see Documentation/timers/timers-howto.txt\n" . $herecurr);
}
if ($delay > 2000) {
WARN("LONG_UDELAY",
if ($line =~ /\bmsleep\s*\((\d+)\);/) {
if ($1 < 20) {
WARN("MSLEEP",
- "msleep < 20ms can sleep for up to 20ms; see Documentation/timers/timers-howto.rst\n" . $herecurr);
+ "msleep < 20ms can sleep for up to 20ms; see Documentation/timers/timers-howto.txt\n" . $herecurr);
}
}
"__aligned(size) is preferred over __attribute__((aligned(size)))\n" . $herecurr);
}
-# Check for __attribute__ section, prefer __section
- if ($realfile !~ m@\binclude/uapi/@ &&
- $line =~ /\b__attribute__\s*\(\s*\(.*_*section_*\s*\(\s*("[^"]*")/) {
- my $old = substr($rawline, $-[1], $+[1] - $-[1]);
- my $new = substr($old, 1, -1);
- if (WARN("PREFER_SECTION",
- "__section($new) is preferred over __attribute__((section($old)))\n" . $herecurr) &&
- $fix) {
- $fixed[$fixlinenr] =~ s/\b__attribute__\s*\(\s*\(\s*_*section_*\s*\(\s*\Q$old\E\s*\)\s*\)\s*\)/__section($new)/;
- }
- }
-
# Check for __attribute__ format(printf, prefer __printf
if ($realfile !~ m@\binclude/uapi/@ &&
$line =~ /\b__attribute__\s*\(\s*\(\s*format\s*\(\s*printf/) {
while ($fmt =~ /(\%[\*\d\.]*p(\w))/g) {
$specifier = $1;
$extension = $2;
- if ($extension !~ /[SsBKRraEhMmIiUDdgVCbGNOxt]/) {
+ if ($extension !~ /[SsBKRraEhMmIiUDdgVCbGNOx]/) {
$bad_specifier = $specifier;
last;
}
my $max = $7;
if ($min eq $max) {
WARN("USLEEP_RANGE",
- "usleep_range should not use min == max args; see Documentation/timers/timers-howto.rst\n" . "$here\n$stat\n");
+ "usleep_range should not use min == max args; see Documentation/timers/timers-howto.txt\n" . "$here\n$stat\n");
} elsif ($min =~ /^\d+$/ && $max =~ /^\d+$/ &&
$min > $max) {
WARN("USLEEP_RANGE",
- "usleep_range args reversed, use min then max; see Documentation/timers/timers-howto.rst\n" . "$here\n$stat\n");
+ "usleep_range args reversed, use min then max; see Documentation/timers/timers-howto.txt\n" . "$here\n$stat\n");
}
}
}
}
-# check for pointless casting of alloc functions
- if ($line =~ /\*\s*\)\s*$allocFunctions\b/) {
+# check for pointless casting of kmalloc return
+ if ($line =~ /\*\s*\)\s*[kv][czm]alloc(_node){0,1}\b/) {
WARN("UNNECESSARY_CASTS",
"unnecessary cast may hide bugs, see http://c-faq.com/malloc/mallocnocast.html\n" . $herecurr);
}
# alloc style
# p = alloc(sizeof(struct foo), ...) should be p = alloc(sizeof(*p), ...)
if ($perl_version_ok &&
- $line =~ /\b($Lval)\s*\=\s*(?:$balanced_parens)?\s*((?:kv|k|v)[mz]alloc(?:_node)?)\s*\(\s*(sizeof\s*\(\s*struct\s+$Lval\s*\))/) {
+ $line =~ /\b($Lval)\s*\=\s*(?:$balanced_parens)?\s*([kv][mz]alloc(?:_node)?)\s*\(\s*(sizeof\s*\(\s*struct\s+$Lval\s*\))/) {
CHK("ALLOC_SIZEOF_STRUCT",
"Prefer $3(sizeof(*$1)...) over $3($4...)\n" . $herecurr);
}
}
}
+# check for bool bitfields
+ if ($sline =~ /^.\s+bool\s*$Ident\s*:\s*\d+\s*;/) {
+ WARN("BOOL_BITFIELD",
+ "Avoid using bool as bitfield. Prefer bool bitfields as unsigned int or u<8|16|32>\n" . $herecurr);
+ }
+
+# check for bool use in .h files
+ if ($realfile =~ /\.h$/ &&
+ $sline =~ /^.\s+bool\s*$Ident\s*(?::\s*d+\s*)?;/) {
+ CHK("BOOL_MEMBER",
+ "Avoid using bool structure members because of possible alignment issues - see: https://lkml.org/lkml/2017/11/21/384\n" . $herecurr);
+ }
+
# check for semaphores initialized locked
if ($line =~ /^.\s*sema_init.+,\W?0\W?\)/) {
WARN("CONSIDER_COMPLETION",
"please use device_initcall() or more appropriate function instead of __initcall() (see include/linux/init.h)\n" . $herecurr);
}
-# check for spin_is_locked(), suggest lockdep instead
- if ($line =~ /\bspin_is_locked\(/) {
- WARN("USE_LOCKDEP",
- "Where possible, use lockdep_assert_held instead of assertions based on spin_is_locked\n" . $herecurr);
- }
-
-# check for deprecated apis
- if ($line =~ /\b($deprecated_apis_search)\b\s*\(/) {
- my $deprecated_api = $1;
- my $new_api = $deprecated_apis{$deprecated_api};
- WARN("DEPRECATED_API",
- "Deprecated use of '$deprecated_api', prefer '$new_api' instead\n" . $herecurr);
- }
-
# check for various structs that are normally const (ops, kgdb, device_tree)
# and avoid what seem like struct definitions 'struct foo {'
if ($line !~ /\bconst\b/ &&
"Using $1 should generally have parentheses around the comparison\n" . $herecurr);
}
-# nested likely/unlikely calls
- if ($line =~ /\b(?:(?:un)?likely)\s*\(\s*!?\s*(IS_ERR(?:_OR_NULL|_VALUE)?|WARN)/) {
- WARN("LIKELY_MISUSE",
- "nested (un)?likely() calls, $1 already uses unlikely() internally\n" . $herecurr);
- }
-
# whine mightly about in_atomic
if ($line =~ /\bin_atomic\s*\(/) {
if ($realfile =~ m@^drivers/@) {
"unknown module license " . $extracted_string . "\n" . $herecurr);
}
}
-
-# check for sysctl duplicate constants
- if ($line =~ /\.extra[12]\s*=\s*&(zero|one|int_max)\b/) {
- WARN("DUPLICATED_SYSCTL_CONST",
- "duplicated sysctl range checking value '$1', consider using the shared one in include/linux/sysctl.h\n" . $herecurr);
- }
}
# If we have no input at all, then there is nothing to report on
projects / oweals / u-boot.git / commitdiff