linux-kernel - Re: [PATCH tip/core/rcu 15/16] scripts: Make checkpatch.pl warn on expedited RCU grace periods

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Message-ID: <20150721010251.GP3717@linux.vnet.ibm.com>
Date:	Mon, 20 Jul 2015 18:02:52 -0700
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	Joe Perches <joe@...ches.com>
Cc:	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, tglx@...utronix.de, peterz@...radead.org,
	rostedt@...dmis.org, dhowells@...hat.com, edumazet@...gle.com,
	dvhart@...ux.intel.com, fweisbec@...il.com, oleg@...hat.com,
	bobby.prani@...il.com, Andy Whitcroft <apw@...onical.com>
Subject: Re: [PATCH tip/core/rcu 15/16] scripts: Make checkpatch.pl warn on
 expedited RCU grace periods

On Mon, Jul 20, 2015 at 05:48:40PM -0700, Joe Perches wrote:
> On Mon, 2015-07-20 at 17:41 -0700, Paul E. McKenney wrote:
> > On Fri, Jul 17, 2015 at 03:37:54PM -0700, Joe Perches wrote:
> > > It'd be faster perl without capture groups:
> > > 
> > > 		if ($line =~ /\b(?:synchronize_(?:rcu|sched)_expedited)\s*\(/) {
> > 
> > Fair enough, but this pattern is used rather heavily in this script,
> > and I don't trust my perl enough to want to create a new pattern.
> > 
> > I see a couple of possible ways forward:
> > 
> > 1.	I hand this patch off to you, and you update it as you deem fit.
> > 
> > 2.	I push the patch as is (after the fix below) and you update
> > 	checkpatch as a whole to use the more efficient code.
> > 
> > How would you like to proceed?
> 
> Push and fix would work fine.

Very good, will do!

							Thanx, Paul

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