linux-kernel - Re: [PATCH v3 2/2] perf test: Add event group test

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Date:   Wed, 7 Dec 2022 11:24:54 +0530
From:   Ravi Bangoria <ravi.bangoria@....com>
To:     Madhavan Srinivasan <maddy@...ux.ibm.com>,
        Athira Rajeev <atrajeev@...ux.vnet.ibm.com>
Cc:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Ian Rogers <irogers@...gle.com>, Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Mark Rutland <mark.rutland@....com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        carsten.haitzler@....com, Leo Yan <leo.yan@...aro.org>,
        Kajol Jain <kjain@...ux.ibm.com>,
        Thomas Richter <tmricht@...ux.ibm.com>,
        linux-perf-users@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>, sandipan.das@....com,
        ananth.narayan@....com, santosh.shukla@....com,
        Ravi Bangoria <ravi.bangoria@....com>
Subject: Re: [PATCH v3 2/2] perf test: Add event group test

>>> Event group test checks group creation for combinations of
>>> hw, sw and uncore PMU events. Some of the uncore pmu event
>>> requires performance enablement explicitly.
>> You need to open an event to activate hv_24x7 pmu?
> 
> hv_24x7 pmu supports events which can also provide system-wide resource data
> and partition should have permissions to access those, hence the check.

Ah ok. Got it.

Thanks,
Ravi