linux-kernel - Re: [PATCH] x86, perf: Allow time stamp for free running PEBSv3

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Date:	Tue, 12 May 2015 23:36:26 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	linux-kernel@...r.kernel.org, Andi Kleen <ak@...ux.intel.com>,
	kan.liang@...el.com
Subject: Re: [PATCH] x86, perf: Allow time stamp for free running PEBSv3

On Tue, May 12, 2015 at 11:11:48AM -0700, Andi Kleen wrote:
> +static unsigned long intel_pmu_free_running_flags(struct perf_event *event)
> +{
> +	unsigned long flags = x86_pmu.free_running_flags;
> +
> +	if (event->attr.clockid)

Made that: use_clockid, otherwise CLOCK_REALTIME would still allow this
(if it were allowed with hardware events).

> +		flags &= ~PERF_SAMPLE_TIME;
> +	return flags;
> +}
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