linux-kernel - Re: [PATCH RFC] rcu: Make __rcu_read

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Message-ID: <20120326234340.GL2450@linux.vnet.ibm.com>
Date:	Mon, 26 Mar 2012 16:43:40 -0700
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	linux-kernel@...r.kernel.org, mingo@...e.hu, laijs@...fujitsu.com,
	dipankar@...ibm.com, akpm@...ux-foundation.org,
	mathieu.desnoyers@...icios.com, josh@...htriplett.org,
	niv@...ibm.com, tglx@...utronix.de, Valdis.Kletnieks@...edu,
	dhowells@...hat.com, eric.dumazet@...il.com, darren@...art.com,
	fweisbec@...il.com, patches@...aro.org,
	torvalds@...ux-foundation.org
Subject: Re: [PATCH RFC] rcu: Make __rcu_read_lock() inlinable

On Mon, Mar 26, 2012 at 02:53:28PM -0400, Steven Rostedt wrote:
> On Mon, 2012-03-26 at 11:32 -0700, Paul E. McKenney wrote:
> 
> > Preemption is disabled at this point, correct?
> > 
> Is this a philosophical question? You're asking if preemption is
> disabled while a task is currently being preempted ;-)

That was my first reaction as well, but never underestimate Peter's
cleverness.  ;-)

							Thanx, Paul

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