linux-kernel - Re: [PATCH tip/core/rcu 2/3] rcu: Add designated reviewers for RCU

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Date:	Tue, 08 Jul 2014 14:01:04 -0700
From:	Joe Perches <joe@...ches.com>
To:	paulmck@...ux.vnet.ibm.com
Cc:	Peter Zijlstra <peterz@...radead.org>,
	linux-kernel@...r.kernel.org, mingo@...nel.org,
	laijs@...fujitsu.com, dipankar@...ibm.com,
	akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
	josh@...htriplett.org, niv@...ibm.com, tglx@...utronix.de,
	rostedt@...dmis.org, dhowells@...hat.com, edumazet@...gle.com,
	dvhart@...ux.intel.com, fweisbec@...il.com, oleg@...hat.com,
	sbw@....edu
Subject: Re: [PATCH tip/core/rcu 2/3] rcu: Add designated reviewers for RCU

On Tue, 2014-07-08 at 13:41 -0700, Paul E. McKenney wrote:
> On Tue, Jul 08, 2014 at 11:06:24AM -0700, Joe Perches wrote:
> > On Tue, 2014-07-08 at 10:09 +0200, Peter Zijlstra wrote:
> > > On Mon, Jul 07, 2014 at 03:42:03PM -0700, Paul E. McKenney wrote:
> > > >  MAINTAINERS | 8 ++++++++
> > > >  1 file changed, 8 insertions(+)
> > > > 
> > > > diff --git a/MAINTAINERS b/MAINTAINERS
> > > > index 1814075c0e74..92f2bf91eec1 100644
> > > > --- a/MAINTAINERS
> > > > +++ b/MAINTAINERS
> > > > @@ -7405,6 +7405,9 @@ F:	kernel/rcu/torture.c
> > > >  
> > > >  RCUTORTURE TEST FRAMEWORK
> > > >  M:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
> > > > +R:	Steven Rostedt <rostedt@...dmis.org>
> > > > +R:	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
> > > > +R:	Lai Jiangshan <laijs@...fujitsu.com>
> > > >  L:	linux-kernel@...r.kernel.org
> > > >  S:	Supported
> > > >  T:	git git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git
> > > 
> > > OK,.. so if we're going to do this can we talk about the syntax here.
> > > 
> > > I would like to also use this for SCHED and PERF, but since both are
> > > rather big I would like to be able to subdivide things. Now I could of
> > > course go create many MAINTAINER sections, but that feels artificial.
> > > 
> > > So I would like to be able to write:
> > > 
> > > SCHEDULER:
> > > ...
> > > R:   Steven Rostedt <rostedt@...dmis.org> (kernel/sched/rt.c)
> > > R:   Juri Lelli <juri.lelli@...il.com>    (kernel/sched/deadline.c)
> > > 
> > > or something like that. And here I've already done concessions in that
> > > the above is machine readable. Ideally I'd be able to say things like:
> > > 'for sched and numa related things' add 'rik and mel'.
> > > 
> > > Hmm, maybe we can look at the patch subject tag like: sched/numa or
> > > sched/rt or sched/deadline etc.. instead of the files touched.
> > 
> > I think it's best to use separate sections.
> > 
> > The parsing logic in get_maintainers is already ugly enough.
> 
> OK, here is a basic change.  Hey, I figure that if you weren't desperately
> in need of entertainment, you would not have asked me to hack a perl script!
> 
> 							Thanx, Paul
> 
> ------------------------------------------------------------------------
> 
> scripts: Teach get_maintainer.pl about the new "R:" tag
> 
> We can now designate reviewers in the MAINTAINERS file with the new
> "R:" tag, so this commit teaches get_maintainers.pl to add their
> email addresses.
> 
> Reported-by: Joe Perches <joe@...ches.com>
> Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
> 
> diff --git a/scripts/get_maintainer.pl b/scripts/get_maintainer.pl
> index 41987885bd31..03785ce7b5b6 100755
> --- a/scripts/get_maintainer.pl
> +++ b/scripts/get_maintainer.pl
> @@ -536,7 +536,7 @@ sub range_has_maintainer {
>  	if ($line =~ m/^(\C):\s*(.*)/) {
>  	    my $type = $1;
>  	    my $value = $2;
> -	    if ($type eq 'M') {
> +	    if ($type eq 'M' || $type eq 'R') {
>  		return 1;
>  	    }
>  	}
> @@ -1047,7 +1047,7 @@ sub add_categories {
>  			}
>  		    }
>  		}..
> -	    } elsif ($ptype eq "M") {
> +	    } elsif ($ptype eq "M" || $ptype eq "R") {
>  		my ($name, $address) = parse_email($pvalue);
>  		if ($name eq "") {
>  		    if ($i > 0) {
> @@ -1062,7 +1062,11 @@ sub add_categories {
>  		}
>  		if ($email_maintainer) {
>  		    my $role = get_maintainer_role($i);
> -		    push_email_addresses($pvalue, $role);
> +		    if ($ptype eq "M") {
> +		      push_email_addresses($pvalue, $role);
> +		    } else {
> +		      push_email_addresses($pvalue, "designated reviewer");
> +		    }
>  		}
>  	    } elsif ($ptype eq "T") {
>  		push(@scm, $pvalue);
> 

Paul, I already sent you a better version over a month ago.

https://lkml.org/lkml/2014/6/2/585


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