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Date: Tue, 28 Mar 2017 10:00:50 +0200
From: Peter Zijlstra <peterz@infradead.org>
To: Dietmar Eggemann <dietmar.eggemann@arm.com>
Cc: Ingo Molnar <mingo@kernel.org>, LKML <linux-kernel@vger.kernel.org>,
        Matt Fleming <matt@codeblueprint.co.uk>,
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        Morten Rasmussen <morten.rasmussen@arm.com>,
        Juri Lelli <juri.lelli@arm.com>,
        Patrick Bellasi <patrick.bellasi@arm.com>
Subject: Re: [RFC PATCH 2/5] sched/events: Introduce cfs_rq load tracking
 trace event
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 <20170328063541.12912-3-dietmar.eggemann@arm.com>
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On Tue, Mar 28, 2017 at 07:35:38AM +0100, Dietmar Eggemann wrote:
>  
> +	if (cfs_rq)
> +		trace_sched_load_cfs_rq(cfs_rq);

You can do that with DEFINE_EVENT_CONDITION and TP_CONDITION.