On Mon, Jun 27, 2016 at 05:56:02AM -0700, tip-bot for Peter Zijlstra wrote:
> +static inline u64 rdlbr_from(unsigned int idx)
> +{
> + u64 val;
> +
> + rdmsrl(x86_pmu.lbr_from + idx, val);
> +
> + return lbr_from_signext_quirk_rd(val);
> +}
> +
> +static inline u64 rdlbr_to(unsigned int idx)
> +{
> + u64 val;
> +
> + rdmsrl(x86_pmu.lbr_from + idx, val);
Things work loads better when we use:
rdmsrl(x86_pmu.lbr_to + idx, val);
:-/
> +
> return val;
> }
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