Re: [Ksummit-discuss] [PATCH] media: add a subsystem profile documentation

[Jani Nikula <jani.nikula@intel.com>]

On Thu, 19 Sep 2019, Geert Uytterhoeven <geert@linux-m68k.org> wrote:
> Hi Jani,
>
> On Thu, Sep 19, 2019 at 10:49 AM Jani Nikula <jani.nikula@intel.com> wrote:
>> On Thu, 19 Sep 2019, Geert Uytterhoeven <geert@linux-m68k.org> wrote:
>> > On Thu, Sep 19, 2019 at 8:57 AM Dan Carpenter <dan.carpenter@oracle.com> wrote:
>> >> On Wed, Sep 18, 2019 at 10:57:28AM -0300, Mauro Carvalho Chehab wrote:
>> >> When I sent a patch, I use get_maintainer.pl then I add whoever the
>> >> wrote the commit from the Fixes tag.  Then I remove Colin King and Kees
>> >> Cook from the CC list because they worked all over the tree and I know
>> >> them.  I also normally remove LKML if there is another mailing list but
>> >> at least one subsystem uses LKML for patchwork so this isn't safe.
>> >>
>> >> So the safest instructions are "Use get_matainer.pl and add the person
>> >> who wrote the commit in the Fixes tag".
>> >
>> > Better: perhaps get_maintainer.pl can be taught to add the author of the
>> > commit pointed to by the Fixes tag, if present?
>>
>> The drm maintainer tools [1] have that, with Cc's and reviewers picked
>> up, and appropriate Cc: stable added. On a random commit from v5.3:
>
> Thanks, but that's not scripts/get_maintainer.pl, and restricted to one out
> of N subsystems.  Not so dissimilar from what Dan was complaining about.

The point was, perhaps poorly conveyed, to provide it as a reference,
and something to steal from. You can think of it as a wrapper around
get_maintainer.pl, it's really not subsystem specific, though part of
our scripts, and it'll take you all of five minutes to make it generic
from the source (MIT):

function dim_cite
{
	local sha1

	sha1=${1:?$usage}

	git --git-dir="$DIM_PREFIX/$DIM_REPO/.git" log -1 $sha1 \
	    "--pretty=format:%H (\"%s\")%n" | \
		sed -e 's/\([0-f]\{12\}\)[0-f]*/\1/'
}

function dim_fixes
{
	local sha1 tag

	sha1=${1:?$usage}

	cd $DIM_PREFIX/$DIM_REPO
	echo "Fixes: $(dim_cite $sha1)"

	(
		git show --no-patch $sha1 | \
			sed -e 's/\(Reviewed\|Acked\|Reported\|Signed\)[a-zA-Z-]*-by:/Cc:/' | \
			sed -e 's/^    C[Cc]: */Cc: /' | grep '^Cc: '
		git show $sha1 | scripts/get_maintainer.pl  --email --norolestats --pattern-depth 1 | sed -e "s/^/Cc: /"
	) | awk '!x[$0]++'

	tag=$(git tag --contains $sha1 | grep ^v | sort -V | head -n 1)
	if [[ -n "$tag" ]]; then
		if ! echo "$tag" | grep -q -e "-rc"; then
			echo "Cc: <stable@vger.kernel.org> # ${tag}+"
		fi
	fi
}


HTH,
Jani.

-- 
Jani Nikula, Intel Open Source Graphics Center
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