linux-kernel - Re: rfc: treewide scripted patch mechanism? (was: Re: [PATCH] Makefile: Convert -Wimplicit-fallthrough=3 to just -Wimplicit-fallthrough for clang)QUILT

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Date:   Wed, 21 Aug 2019 10:33:50 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Joe Perches <joe@...ches.com>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Julia Lawall <julia.lawall@...6.fr>,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        LKML <linux-kernel@...r.kernel.org>,
        clang-built-linux@...glegroups.com,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: rfc: treewide scripted patch mechanism? (was: Re: [PATCH]
 Makefile: Convert -Wimplicit-fallthrough=3 to just -Wimplicit-fallthrough
 for clang)QUILT

Hi Joe,

On Mon, 19 Aug 2019 17:08:00 -0700 Joe Perches <joe@...ches.com> wrote:
>
> A few examples:
> 
> 1: a patch just to MAINTAINERS done via bash script:
> 
> https://lore.kernel.org/lkml/904551f1f198ffac9a0f9c3c99aa966b0a7c76c1.camel@perches.com/
> 
> $ git grep -h "^[FX]:" MAINTAINERS | \
>   cut -f2- | grep -vP '/$|\*|\?|\[' | \
>   while read file ; do \
>     if [ -d $file ]; then \
>       sed -i -e "s@...ile}\$@...ile}/@" MAINTAINERS ; \
>     fi ; \
>   done
> 
> This one is trivial and takes almost no time.

That one seems ok (except you need "s around the $file in [ -d $file ]).
In this case, I guess the plan is that I run the script and commit the
result using the commit message and authorship from the above mail ...

(I would also replace the first three commands with

sed -En 's/^[FX]:[[:space:]]*([^[*?]*[^[*?/])$/\1/p' MAINTAINERS

/me puts away his yak razor :-))

> 2: would be Julia Lawall's stracpy change done
> with coccinelle: (attached)
> 
> This one takes quite a bit longer as it has to do a
> cocci --all-includes scan of each source file and each
> of its #include files.

What do I need to apply that "patch"?

-- 
Cheers,
Stephen Rothwell

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