linux-kernel - Re: [PATCH] scripts/atomic: change 'fold' to 'grep'

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Message-ID: <20181206161528.GA118885@gmail.com>
Date:   Thu, 6 Dec 2018 17:15:28 +0100
From:   Ingo Molnar <mingo@...nel.org>
To:     Will Deacon <will.deacon@....com>
Cc:     Anders Roxell <anders.roxell@...aro.org>, peterz@...radead.org,
        linux-kernel@...r.kernel.org, mark.rutland@....com
Subject: Re: [PATCH] scripts/atomic: change 'fold' to 'grep'


* Will Deacon <will.deacon@....com> wrote:

> [+ Ingo and Mark]
> 
> On Tue, Dec 04, 2018 at 10:47:13PM +0100, Anders Roxell wrote:
> > Some distibutions and build systems doesn't include 'fold' from
> > coreutils default.
> > 
> > .../scripts/atomic/atomic-tbl.sh: line 183: fold: command not found
> > 
> > Rework to use 'grep' instead of 'fold' to use a dependency that is
> > already used a lot in the kernel.
> > 
> > Reported-by: Naresh Kamboju <naresh.kamboju@...aro.org>
> > Suggested-by: Will Deacon <will.deacon@....com>
> > Signed-off-by: Anders Roxell <anders.roxell@...aro.org>
> > ---
> >  scripts/atomic/atomic-tbl.sh | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/scripts/atomic/atomic-tbl.sh b/scripts/atomic/atomic-tbl.sh
> > index 9d6be538a987..81d5c32039dd 100755
> > --- a/scripts/atomic/atomic-tbl.sh
> > +++ b/scripts/atomic/atomic-tbl.sh
> > @@ -180,7 +180,7 @@ gen_proto_variants()
> >  #gen_proto(meta, ...)
> >  gen_proto() {
> >  	local meta="$1"; shift
> > -	for m in $(echo "${meta}" | fold -w1); do
> > +	for m in $(echo "${meta}" | grep -o .); do
> >  		gen_proto_variants "${m}" "$@"
> >  	done
> 
> Acked-by: Will Deacon <will.deacon@....com>
> 
> Ingo -- please can you take this one via -tip?

I'm still waiting for a reply to my previous concerns expressed in:

   Re: [tip:locking/core] locking/atomics: Check generated headers are up-to-date
   <20181128083057.GA7879@...il.com>

Will remove it from linux-next if there's no good resolution for this 
cycle.

Thanks,

	Ingo