linux-kernel - Re: [RFC][PATCH] rcu: Clean up TASKS

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Date:	Wed, 11 Nov 2015 05:27:34 -0800
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Steven Rostedt <rostedt@...dmis.org>,
	Oleg Nesterov <oleg@...hat.com>,
	Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [RFC][PATCH] rcu: Clean up TASKS_RCU() abuse

On Wed, Nov 11, 2015 at 02:23:04PM +0100, Peter Zijlstra wrote:
> On Wed, Nov 11, 2015 at 04:49:40AM -0800, Paul E. McKenney wrote:
> > On Wed, Nov 11, 2015 at 01:23:10PM +0100, Peter Zijlstra wrote:
> > > Hi
> > > 
> > > I recently ran into TASKS_RCU() and wondered why we can't use normal
> > > coding patterns to do the same.
> > > 
> > > Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
> > 
> > Well, I cannot get too excited either way, but the diffstat for this
> > change is not particularly favorable.
> 
> It also doesn't build with TASKS_RCU enabled it turns out. But the point
> is, nowhere else do we use this pattern. We always provide functions.

RCU_TRACE() another very similar macro, and has been in place for quite
some time.  Still within RCU, admittedly, but it does exist.

							Thanx, Paul

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