Re: [PATCH 0/5] perf: add support for capturing skid IP

[Stephane Eranian]

On Fri, Jun 16, 2017 at 10:50 AM, Andi Kleen <ak@xxxxxxxxxxxxxxx> wrote:
>> > Yeah, I think it is easier and more portable, especially on hardware with a
>> > PEBS-like mechanism but no branch buffer (like LBR). FYI, I did do a test
>> > implementation yesterday to evaluate the difficulty.
>> >
>> A more generalized usage of the feature is to evaluate the amount of skid
>> for any precise event.
>
> It should be always the same (one instruction), except for the control flow
> change case.
>
That's on Intel X86. What about the other arch?

> -Andi