linux-kernel - Re: [PATCH] rcu: Is it safe to enter an RCU read-side critical section?

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Date:	Mon, 9 Sep 2013 11:50:47 -0700
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Eric Dumazet <eric.dumazet@...il.com>,
	linux-kernel@...r.kernel.org, mingo@...e.hu, laijs@...fujitsu.com,
	dipankar@...ibm.com, akpm@...ux-foundation.org,
	josh@...htriplett.org, niv@...ibm.com, tglx@...utronix.de,
	dhowells@...hat.com, edumazet@...gle.com, darren@...art.com,
	sbw@....edu
Subject: Re: [PATCH] rcu: Is it safe to enter an RCU read-side critical
 section?

On Mon, Sep 09, 2013 at 02:36:39PM -0400, Steven Rostedt wrote:
> On Mon, 9 Sep 2013 10:56:56 -0700
> "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com> wrote:
> 
> 
> > Although I do like rcu_is_active() better than rcu_read_check(), my
> > concern with rcu_is_active() is that it can easily be mistaken for a
> > global state rather than a per-CPU/thread/task/whatever state.
> 
> rcu_is_active_local();

rcu_is_active_here()?

> Although, even though it's cute. I think "rcu_is_watching_you()" has no
> ambiguity.

Like I said, I am tempted...

							Thanx, Paul

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