checkpatch: cache last camelcase hash as .checkpatch-camelcase.<commit>
Add a file to cache the CamelCase variables found by <commit> to reduce
the time it takes to scan the include/ directory.
Filename is '.checkpatch-camelcase.<commit>' and it is created only only
if a .git directory exists.
<commit> is determined by the last non-merge commit id in the
include/ path.
Reduces checkpatch run time by ~12 cpu seconds on my little netbook.
Signed-off-by: Joe Perches <joe@perches.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 0d94853..6afcd12 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -399,7 +399,23 @@
return if ($camelcase_seeded);
my $files;
+ my $camelcase_git_file = "";
+
if (-d ".git") {
+ my $git_last_include_commit = `git log --no-merges --pretty=format:"%h%n" -1 -- include`;
+ chomp $git_last_include_commit;
+ $camelcase_git_file = ".checkpatch-camelcase.$git_last_include_commit";
+ if (-f $camelcase_git_file) {
+ open(my $camelcase_file, '<', "$camelcase_git_file")
+ or warn "$P: Can't read '$camelcase_git_file' $!\n";
+ while (<$camelcase_file>) {
+ chomp;
+ $camelcase{$_} = 1;
+ }
+ close($camelcase_file);
+
+ return;
+ }
$files = `git ls-files include`;
} else {
$files = `find $root/include -name "*.h"`;
@@ -409,6 +425,16 @@
seed_camelcase_file($file);
}
$camelcase_seeded = 1;
+
+ if ($camelcase_git_file ne "") {
+ unlink glob ".checkpatch-camelcase.*";
+ open(my $camelcase_file, '>', "$camelcase_git_file")
+ or warn "$P: Can't write '$camelcase_git_file' $!\n";
+ foreach (sort { lc($a) cmp lc($b) } keys(%camelcase)) {
+ print $camelcase_file ("$_\n");
+ }
+ close($camelcase_file);
+ }
}
$chk_signoff = 0 if ($file);