checkpatch: ignore existing CamelCase uses from include/...
When using --strict, CamelCase uses are described with CHECK: messages.
These CamelCase uses may be acceptable and should not generate these
messages when the variable is already defined in a file from the
include/... path.
So, change checkpatch to read all the .h files in include/... and look
for preexisting CamelCase #defines, typedefs and function prototypes.
Add these to the existing camelcase hash so that any uses in the patch or
file can be ignored.
There are currently ~3500 files in include/. It takes about 10 cpu
seconds on my little netbook to grep for and preseed these existing uses.
That's about 4x the time for a similar git grep.
This preseeding is only done once when using --strict and only when there
is a CamelCase use found.
If a .git directory is found, it uses 'git ls-files include' If not, it
uses 'find $root/include -name "*.h"
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 7e8aa1b..70e7f7c 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -31,6 +31,7 @@
my $root;
my %debug;
my %ignore_type = ();
+my %camelcase = ();
my @ignore = ();
my $help = 0;
my $configuration_file = ".checkpatch.conf";
@@ -349,7 +350,6 @@
}
build_types();
-
our $Typecast = qr{\s*(\(\s*$NonptrType\s*\)){0,1}\s*};
# Using $balanced_parens, $LvalOrFunc, or $FuncArg
@@ -369,6 +369,48 @@
return $string;
}
+sub seed_camelcase_file {
+ my ($file) = @_;
+
+ return if (!(-f $file));
+
+ local $/;
+
+ open(my $include_file, '<', "$file")
+ or warn "$P: Can't read '$file' $!\n";
+ my $text = <$include_file>;
+ close($include_file);
+
+ my @lines = split('\n', $text);
+
+ foreach my $line (@lines) {
+ next if ($line !~ /(?:[A-Z][a-z]|[a-z][A-Z])/);
+ if ($line =~ /^[ \t]*(?:#[ \t]*define|typedef\s+$Type)\s+(\w*(?:[A-Z][a-z]|[a-z][A-Z])\w*)/) {
+ $camelcase{$1} = 1;
+ }
+ elsif ($line =~ /^\s*$Declare\s+(\w*(?:[A-Z][a-z]|[a-z][A-Z])\w*)\s*\(/) {
+ $camelcase{$1} = 1;
+ }
+ }
+}
+
+my $camelcase_seeded = 0;
+sub seed_camelcase_includes {
+ return if ($camelcase_seeded);
+
+ my $files;
+ if (-d ".git") {
+ $files = `git ls-files include`;
+ } else {
+ $files = `find $root/include -name "*.h"`;
+ }
+ my @include_files = split('\n', $files);
+ foreach my $file (@include_files) {
+ seed_camelcase_file($file);
+ }
+ $camelcase_seeded = 1;
+}
+
$chk_signoff = 0 if ($file);
my @rawlines = ();
@@ -1448,7 +1490,6 @@
my %suppress_export;
my $suppress_statement = 0;
- my %camelcase = ();
# Pre-scan the patch sanitizing the lines.
# Pre-scan the patch looking for any __setup documentation.
@@ -3198,11 +3239,13 @@
#Ignore Page<foo> variants
$var !~ /^(?:Clear|Set|TestClear|TestSet|)Page[A-Z]/ &&
#Ignore SI style variants like nS, mV and dB (ie: max_uV, regulator_min_uA_show)
- $var !~ /^(?:[a-z_]*?)_?[a-z][A-Z](?:_[a-z_]+)?$/ &&
- !defined $camelcase{$var}) {
- $camelcase{$var} = 1;
- CHK("CAMELCASE",
- "Avoid CamelCase: <$var>\n" . $herecurr);
+ $var !~ /^(?:[a-z_]*?)_?[a-z][A-Z](?:_[a-z_]+)?$/) {
+ seed_camelcase_includes() if ($check);
+ if (!defined $camelcase{$var}) {
+ $camelcase{$var} = 1;
+ CHK("CAMELCASE",
+ "Avoid CamelCase: <$var>\n" . $herecurr);
+ }
}
}