linux-kernel - Re: [PATCH linux-next] perf test: Fix test perf evlist for z/VM s390x

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Message-ID: <aXfP3avz62ZM14bE@x1>
Date: Mon, 26 Jan 2026 17:34:37 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Ian Rogers <irogers@...gle.com>
Cc: Thomas Richter <tmricht@...ux.ibm.com>, linux-kernel@...r.kernel.org,
	linux-s390@...r.kernel.org, linux-perf-users@...r.kernel.org,
	namhyung@...nel.org, agordeev@...ux.ibm.com, gor@...ux.ibm.com,
	sumanthk@...ux.ibm.com, hca@...ux.ibm.com, japo@...ux.ibm.com
Subject: Re: [PATCH linux-next] perf test: Fix test perf evlist for z/VM s390x

On Mon, Jan 26, 2026 at 09:42:54AM -0800, Ian Rogers wrote:
> On Mon, Jan 26, 2026 at 2:18 AM Thomas Richter <tmricht@...ux.ibm.com> wrote:
> >
> > Perf test case 'perf evlist tests' fails on z/VM machines on s390.
> >
> > The failure is causes by event cycles. This event is not available
> > on virtualized machines like z/VM on s390.
> > Change to software event cpu-clock to fix this.
> >
> >     Output before:
> >       # ./perf test 78
> >       79: perf evlist tests              : FAILED!
> >       #
> >
> >     Output after:
> >       # ./perf test 78
> >       79: perf evlist tests              : Ok
> >       #
> >
> > Fixes: b04d2b919912 ("perf test: Fix test case perf evlist tests for s390x")
> > Signed-off-by: Thomas Richter <tmricht@...ux.ibm.com>
> > Tested-by: Jan Polensky <japo@...ux.ibm.com>
> > Reviewed-by: Jan Polensky <japo@...ux.ibm.com>
> > Cc: Ian Rogers <irogers@...gle.com>

> Reviewed-by: Ian Rogers <irogers@...gle.com>

Thanks, applied to perf-tools-next,

- Arnaldo