Loggng messages that emit function names have many different forms.
Right now, grep shows these mixtures of forms:
13704 "%s:"
3839 "%s "
2787 "%s()"
Some of these are in macros.
Perhaps it'd be better for grep and consistency to exclusively use "%s:"
Unfortunately, checkpatch isn't an ideal tool to find all these uses.
It seems difficult to handle the possible macro definition styles.
Maybe coccinelle might be better at it, but here's a possible patch to
find the non-macro definition uses.
Signed-off-by: Joe Perches <joe@xxxxxxxxxxx>
---
scripts/checkpatch.pl | 43 +++++++++++++++++++++++++++++++++++++++++++
1 file changed, 43 insertions(+)
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 75ce6d0..727ab64 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1415,6 +1415,22 @@ sub raw_line {
return $line;
}
+sub cooked_line {
+ my ($linenr, $cnt) = @_;
+
+ my $offset = $linenr - 1;
+ $cnt++;
+
+ my $line;
+ while ($cnt) {
+ $line = $lines[$offset++];
+ next if (defined($line) && $line =~ /^-/);
+ $cnt--;
+ }
+
+ return $line;
+}
+
sub cat_vet {
my ($vet) = @_;
my ($res, $coded);
@@ -5681,6 +5697,33 @@ sub process {
}
}
+# check how __func__ is formatted, prefer "%s:...', __func__
+ if ($^V && $^V ge 5.10.0 &&
+ defined $stat &&
+ $stat =~ /\b__func__\b/ &&
+ $stat =~ /^\+\s*$logFunctions\s*\(\s*[^"]*$String\s*,\s*__func__\b/m &&
+ (() = $stat =~ /^\+|\n\+/g) == 1 &&
+ (() = $stat =~ /;/g) <= 1) {
+ my $herectx = $here . "\n";
+ my $cooked_linenr = -1;
+ my $cooked_line = "";
+ my $raw_line = "";
+ my $cnt = statement_rawlines($stat);
+ for (my $n = 0; $n < $cnt; $n++) {
+ $herectx .= raw_line($linenr, $n) . "\n";
+ if ($cooked_linenr == -1 && cooked_line($linenr, $n) =~ /$String/) {
+ $cooked_linenr = $linenr + $n;
+ $cooked_line = cooked_line($linenr, $n);
+ $raw_line = raw_line($linenr, $n);
+ }
+ }
+ my $qs = get_quoted_string($cooked_line, $raw_line);
+ if ($qs !~ /^"%s:/) {
+ WARN("FUNC_STYLE",
+ "Prefer using formatting style '%s:' for __func__\n" . $herectx);
+ }
+ }
+
# check for uses of __DATE__, __TIME__, __TIMESTAMP__
while ($line =~ /\b(__(?:DATE|TIME|TIMESTAMP)__)\b/g) {
ERROR("DATE_TIME",
--
2.6.3.368.gf34be46
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