From: Joe Perches <j...@perches.com>
Date: 2020-11-24 06:24:07
To: Sam Ravnborg <s...@ravnborg.org>,Bernard Zhao <bern...@vivo.com>
Cc: linux-kernel@vger.kernel.org,Andrew Morton
<a...@linux-foundation.org>,Linus Torvalds
<torva...@linux-foundation.org>,kernel-janitors
<kernel-janit...@vger.kernel.org>,Greg KH <gre...@linuxfoundation.org>
Subject: [RFC PATCH] Add a new "Frozen" status to MAINTAINERS subsystem
entries>On Mon, 2020-11-23 at 22:42 +0100, Sam Ravnborg wrote:
>> For this old driver we should try to limit patches to bug fixing and
>> infrastructure updates.
>
>It might be useful to add a new "S:" entry type to these old drivers
>as supported/maintained/obsolete may not really be appropriate.
>
>How about something like "S: Frozen" and checkpatch could emit a
>message similar to the one for unnecessary changes to obsolete code?
>
>So using the below would emit:
>
>$ ./scripts/checkpatch.pl -f drivers/gpu/drm/via/via_dma.c
>WARNING: drivers/gpu/drm/via/via_dma.c is marked as 'frozen' in the
>MAINTAINERS hierarchy. No unnecessary modifications please.
>
>Maybe like the below (and fyi there's no additional git lookup overhead as
>the initial obsolete check already caches the git result).
>
>---
> MAINTAINERS | 10 +++++++++-
> scripts/checkpatch.pl | 11 +++++++----
> 2 files changed, 16 insertions(+), 5 deletions(-)
>
>diff --git a/MAINTAINERS b/MAINTAINERS
>index 5f10105cac6f..6374d29180b8 100644
>--- a/MAINTAINERS
>+++ b/MAINTAINERS
>@@ -88,7 +88,10 @@ Descriptions of section entries and preferred order
> Supported: Someone is actually paid to look after this.
> Maintained: Someone actually looks after it.
> Odd Fixes: It has a maintainer but they don't have time to do
>- much other than throw the odd patch in. See below..
>+ much other than throw the odd patch in.
>+ Frozen: Old code that should not be modified unless changes
>+ are to correct actual defects or API infrastructure.
>+ Cleanup/style changes are not generally accepted.
> Orphan: No current maintainer [but maybe you could take the
> role as you write your new code].
> Obsolete: Old code. Something tagged obsolete generally means
>@@ -5718,6 +5721,11 @@ S: Supported
> T: git git://anongit.freedesktop.org/drm/drm-misc
> F: drivers/gpu/drm/udl/
>
>+DRM DRIVER FOR VIA
>+L: dri-de...@lists.freedesktop.org
>+S: Frozen
>+F: drivers/gpu/drm/via/
>+
> DRM DRIVER FOR VIRTUAL KERNEL MODESETTING (VKMS)
> M: Rodrigo Siqueira <rodrigosiqueiram...@gmail.com>
> M: Melissa Wen <melissa....@gmail.com>
>diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
>index fdfd5ec09be6..79321cbfb761 100755
>--- a/scripts/checkpatch.pl
>+++ b/scripts/checkpatch.pl
>@@ -902,8 +902,8 @@ sub seed_camelcase_file {
>
> our %maintained_status = ();
>
>-sub is_maintained_obsolete {
>- my ($filename) = @_;
>+sub is_maintained {
>+ my ($filename, $test) = @_;
>
> return 0 if (!$tree || !(-e "$root/scripts/get_maintainer.pl"));
>
>@@ -911,7 +911,7 @@ sub is_maintained_obsolete {
> $maintained_status{$filename} = `perl
> $root/scripts/get_maintainer.pl --status --nom --nol --nogit --nogit-fallback
> -f $filename 2>&1`;
> }
>
>- return $maintained_status{$filename} =~ /obsolete/i;
>+ return $maintained_status{$filename} =~ /$test/i;
> }
>
> sub is_SPDX_License_valid {
>@@ -2633,9 +2633,12 @@ sub process {
> }
>
> if ($found_file) {
>- if (is_maintained_obsolete($realfile)) {
>+ if (is_maintained($realfile, "obsolete")) {
> WARN("OBSOLETE",
> "$realfile is marked as 'obsolete' in the
> MAINTAINERS hierarchy. No unnecessary modifications please.\n");
>+ } elsif (is_maintained($realfile, "frozen")) {
>+ WARN("FROZEN",
>+ "$realfile is marked as 'frozen' in the
>MAINTAINERS hierarchy. No unnecessary modifications please.\n");
> }
> if ($realfile =~
> m@^(?:drivers/net/|net/|drivers/staging/)@) {
> $check = 1;
Hi:
For me, this seems to be a nice idea.
As a newcomer to the community, maybe I am not sure which drivers are hot and
which ones do not need too much attention.
With this patch script, it will give us a better guide.
BR//Bernard
>
