[Linux-kernel-mentees] [PATCH v3] checkpatch: add --fix option to include linux checks

[Lukas Bulwahn]

On Sun, Dec 6, 2020 at 4:24 PM Dwaipayan Ray <dwaipayanray1 at gmail.com> wrote:
>
> Add fix option to INCLUDE_LINUX and ARCH_INCLUDE_LINUX
> checks to replace asm includes.
>
> Macros of type:
>  #include <asm/percpu.h>
>  #include <asm/processor.h>
>
> are corrected to:
>  #include <linux/percpu.h>
>  #include <linux/processor.h>
>
> Signed-off-by: Dwaipayan Ray <dwaipayanray1 at gmail.com>

Dwaipayan, can you run this rule from checkpatch.pl on all files in
the current linux-next tree and share all findings with me?

Maybe, we can fix a few places and improve the rule.

Lukas

> ---
> Changes in v3:
> - Add --fix option to ARCH_INCLUDE_LINUX check
>
> Changes in v2:
> - Use \Q..\E quoting
> - Use @ as regex delimiter
>
>  scripts/checkpatch.pl | 14 ++++++++++----
>  1 file changed, 10 insertions(+), 4 deletions(-)
>
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> index 7b086d1cd6c2..4aecc237ed38 100755
> --- a/scripts/checkpatch.pl
> +++ b/scripts/checkpatch.pl
> @@ -5558,11 +5558,17 @@ sub process {
>                                 my $asminclude = `grep -Ec "#include\\s+<asm/$file>" $root/$checkfile`;
>                                 if ($asminclude > 0) {
>                                         if ($realfile =~ m{^arch/}) {
> -                                               CHK("ARCH_INCLUDE_LINUX",
> -                                                   "Consider using #include <linux/$file> instead of <asm/$file>\n" . $herecurr);
> +                                               if (CHK("ARCH_INCLUDE_LINUX",
> +                                                       "Consider using #include <linux/$file> instead of <asm/$file>\n" . $herecurr) &&
> +                                                   $fix) {
> +                                                       $fixed[$fixlinenr] =~ s@\Q<asm/$file>\E@<linux/$file>@;
> +                                               }
>                                         } else {
> -                                               WARN("INCLUDE_LINUX",
> -                                                    "Use #include <linux/$file> instead of <asm/$file>\n" . $herecurr);
> +                                               if (WARN("INCLUDE_LINUX",
> +                                                        "Use #include <linux/$file> instead of <asm/$file>\n" . $herecurr) &&
> +                                                   $fix) {
> +                                                       $fixed[$fixlinenr] =~ s@\Q<asm/$file>\E@<linux/$file>@;
> +                                               }
>                                         }
>                                 }
>                         }
> --
> 2.27.0
>