Re: [PATCH v5 12/20] x86: perf: intel_pt: Intel PT PMU driver

[Peter Zijlstra]

On Mon, Oct 13, 2014 at 04:45:40PM +0300, Alexander Shishkin wrote:
> +/*
> + * Capabilities of Intel PT hardware, such as number of address bits or
> + * supported output schemes, are cached and exported to userspace as "caps"
> + * attribute group of pt pmu device
> + * (/sys/bus/event_source/devices/intel_pt/caps/) so that userspace can store
> + * relevant bits together with intel_pt traces.
> + */

Does it make sense to use that AUX record variable data thing for this
instead -- much like what the ARM folks wanted?
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