linux-kernel - Re: [PATCH 7/5] tracing: Make sure rcu_irq_enter() can work for trace_*

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Date:   Fri, 7 Apr 2017 13:28:27 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Cc:     linux-kernel <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Subject: Re: [PATCH 7/5] tracing: Make sure rcu_irq_enter() can work for
 trace_*_rcuidle() trace events


> > use rcu_irq_enter() it must make sure that it is functionable. A check  
> 
> I don't think functionable is the word you are looking for here. Perhaps
> "must make sure that it can be invoked" ?

Well, rcu_irq_enter() doesn't function in that location. And it's a
change log, not in the code. I think it gets the point across enough.

-- Steve