linux-kernel - Re: [PATCH v3 0/5] Cavium ThunderX uncore PMU support

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Date:   Thu, 20 Oct 2016 12:37:07 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Jan Glauber <jglauber@...ium.com>
Cc:     Mark Rutland <mark.rutland@....com>,
        Will Deacon <will.deacon@....com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v3 0/5] Cavium ThunderX uncore PMU support

On Thu, Oct 20, 2016 at 11:30:36AM +0200, Jan Glauber wrote:
> Note:
> I'm using perf_sw_context in difference to perf_invalid_context
> (see WARN_ON in perf_pmu_register). Reason is that with perf_invalid_context
> add() is never called and the counter results are shown as "unsupported" by
> perf. With perf_sw_context everything works as expected.

What?! All the uncore PMUs use perf_invalid_context. What doesn't work
for you?