linux-kernel - Re: Invalid event (cycles:pp) in per-thread mode, enable system wide with '-a'.

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Message-Id: <76CB17D0-5A66-4D49-A389-8F40EC830DC0@sladewatkins.net>
Date:   Thu, 29 Sep 2022 18:10:35 -0400
From:   Slade Watkins <srw@...dewatkins.net>
To:     Nick Desaulniers <ndesaulniers@...gle.com>
Cc:     linux-perf-users@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>,
        Ian Rogers <irogers@...gle.com>
Subject: Re: Invalid event (cycles:pp) in per-thread mode, enable system wide
 with '-a'.

Hey Nick,

> On Sep 29, 2022, at 5:54 PM, Nick Desaulniers <ndesaulniers@...gle.com> wrote:
> 
> I remember hearing rumblings about issues with zen 2, LBR, vs zen 3.
> Is this a known issue, or am I holding it wrong?

Hm… I also remember this. I have a Zen 2 based system that I can do testing on, so I will do so when I’m able.

If I discover something of note, I’ll get back to you.

Cheers,
-srw