linux-kernel - Re: [PATCH V2 01/13] perf/core: Introduce PERF_RECORD

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Date:   Tue, 6 Dec 2016 12:26:34 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     kan.liang@...el.com
Cc:     mingo@...hat.com, acme@...nel.org, linux-kernel@...r.kernel.org,
        alexander.shishkin@...ux.intel.com, tglx@...utronix.de,
        namhyung@...nel.org, jolsa@...nel.org, adrian.hunter@...el.com,
        wangnan0@...wei.com, mark.rutland@....com, andi@...stfloor.org
Subject: Re: [PATCH V2 01/13] perf/core: Introduce PERF_RECORD_OVERHEAD

On Fri, Dec 02, 2016 at 04:19:09PM -0500, kan.liang@...el.com wrote:
> @@ -1221,6 +1225,11 @@ static inline bool has_addr_filter(struct perf_event *event)
>  	return event->pmu->nr_addr_filters;
>  }
>  
> +static inline bool needs_log_overhead(struct perf_event *event)
> +{
> +	return !!event->attr.overhead;
> +}

There seems to be exactly one user of that, seems a tad pointless to
provide this function.