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Date: Thu, 4 May 2017 16:41:28 +0200
From: Peter Zijlstra <peterz@infradead.org>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@kernel.org>,
        Clark Williams <williams@redhat.com>,
        Daniel Bristot de Oliveira <bristot@redhat.com>,
        John Kacur <jkacur@redhat.com>, Scott Wood <swood@redhat.com>
Subject: Re: [PATCH tip/sched/core v2] sched/rt: Simplify the IPI rt
 balancing logic
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On Mon, Apr 24, 2017 at 11:47:32AM -0400, Steven Rostedt wrote:
> +	/* Keep the loop going if the IPI is currently active */
> +	atomic_inc_return(&rq->rd->rto_loop_next);

What's the return for?