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Date: Wed, 3 Aug 2016 09:13:52 -0500
From: Josh Poimboeuf <jpoimboe@redhat.com>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@kernel.org>,
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        Peter Zijlstra <peterz@infradead.org>,
        Frederic Weisbecker <fweisbec@gmail.com>,
        Byungchul Park <byungchul.park@lge.com>
Subject: Re: [PATCH 05/19] x86/dumpstack: fix function graph tracing stack
 dump reliability issues
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On Tue, Aug 02, 2016 at 11:45:30PM -0400, Steven Rostedt wrote:
> On Tue, 2 Aug 2016 22:31:25 -0500
> Josh Poimboeuf <jpoimboe@redhat.com> wrote:
> > Yeah, we do need to add a parameter to ftrace_push_return_trace().  But
> > callers which don't implement it could just pass zero like they do with
> > 'fp'.
> > 
> 
> Right, if zero is passed in, then just ignore it.

I still think we need the define though, because there will be two
versions of ftrace_graph_ret_addr().

-- 
Josh