On Fri, 2021-05-21 at 01:58 -0700, Joe Richey wrote:
> From: Joe Richey <joerichey@xxxxxxxxxx>
>
> Instead of just ignoring UAPI headers, reccomend the UAPI compatible
> macros if a user adds something that looks like (1 << n). Normal kernel
> code will continue to get BIT_ULL() and BIT() reccomended.
>
> This change also modifies the $realfile regex to match headers that have
> "include/uapi" anywhere in their path so paths like:
> tools/include/uapi/linux/kvm.h
> arch/x86/include/uapi/asm/hwcap2.h
> get recognized as UAPI headers.
[]
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
[]
> @@ -7020,15 +7020,17 @@ sub process {
> }
> }
>
>
> -# check for #defines like: 1 << <digit> that could be BIT(digit), it is not exported to uapi
> - if ($realfile !~ m@^include/uapi/@ &&
> - $line =~ /#\s*define\s+\w+\s+\(?\s*1\s*([ulUL]*)\s*\<\<\s*(?:\d+|$Ident)\s*\)?/) {
> - my $ull = "";
> - $ull = "_ULL" if (defined($1) && $1 =~ /ll/i);
> +# check for #defines like: 1 << <digit> that could be BIT(digit) or similar
> + if ($line =~ /#\s*define\s+\w+\s+\(?\s*1\s*([ulUL]*)\s*\<\<\s*(?:\d+|$Ident)\s*\)?/) {
> + my $ull = (defined($1) && $1 =~ /ll/i);
> + my $macroname = $ull ? "BIT_ULL" : "BIT";
> + if ($realfile =~ m@include/uapi/@) {
Likely better with \b
if ($realfile =~ m@\binclude/uapi/@) {
> + $macroname = $ull ? "_BITULL" : "_BITUL";
> + }
> if (CHK("BIT_MACRO",
> - "Prefer using the BIT$ull macro\n" . $herecurr) &&
> + "Prefer using the $macroname macro\n" . $herecurr) &&
> $fix) {
> - $fixed[$fixlinenr] =~ s/\(?\s*1\s*[ulUL]*\s*<<\s*(\d+|$Ident)\s*\)?/BIT${ull}($1)/;
> + $fixed[$fixlinenr] =~ s/\(?\s*1\s*[ulUL]*\s*<<\s*(\d+|$Ident)\s*\)?/${macroname}($1)/;
Doesn't need braces
$fixed[$fixlinenr] =~ s/\(?\s*1\s*[ulUL]*\s*<<\s*(\d+|$Ident)\s*\)?/$macroname($1)/;
Otherwise, fine by me.
