[PATCH V2] tools/perf/test: Fix perf all PMU test to skip hv_24x7/hv_gpci tests on powerpc

[Ian Rogers]

On Thu, May 19, 2022 at 8:43 AM Athira Rajeev
<atrajeev at linux.vnet.ibm.com> wrote:
>
> "perf all PMU test" picks the input events from
> "perf list --raw-dump pmu" list and runs "perf stat -e"
> for each of the event in the list. In case of powerpc, the
> PowerVM environment supports events from hv_24x7 and hv_gpci
> PMU which is of example format like below:
> - hv_24x7/CPM_ADJUNCT_INST,domain=?,core=?/
> - hv_gpci/event,partition_id=?/
>
> The value for "?" needs to be filled in depending on
> system and respective event. CPM_ADJUNCT_INST needs have
> core value and domain value. hv_gpci event needs partition_id.
> Similarly, there are other events for hv_24x7 and hv_gpci
> having "?" in event format. Hence skip these events on powerpc
> platform since values like partition_id, domain is specific
> to system and event.
>
> Fixes: 3d5ac9effcc6 ("perf test: Workload test of all PMUs")
> Signed-off-by: Athira Rajeev <atrajeev at linux.vnet.ibm.com>
> ---
> Changelog:
>  v1 -> v2:
>  Instead of checking for platform, used the pmu name
>  ie, hv_24x7 and hv_gpci to skip the test since this
>  pmu name is specific to powerpc as suggested by
>  Michael Ellerman.
>
>  tools/perf/tests/shell/stat_all_pmu.sh | 10 ++++++++++
>  1 file changed, 10 insertions(+)
>
> diff --git a/tools/perf/tests/shell/stat_all_pmu.sh b/tools/perf/tests/shell/stat_all_pmu.sh
> index b30dba455f36..7d046bb8a7b9 100755
> --- a/tools/perf/tests/shell/stat_all_pmu.sh
> +++ b/tools/perf/tests/shell/stat_all_pmu.sh
> @@ -5,6 +5,16 @@
>  set -e
>
>  for p in $(perf list --raw-dump pmu); do
> +  # In powerpc, skip the events for hv_24x7 and hv_gpci.
> +  # These events needs input values to be filled in for
> +  # core, chip, patition id based on system.
nit: s/patition/partition/
> +  # Example: hv_24x7/CPM_ADJUNCT_INST,domain=?,core=?/

I've no problem with this patch, we may need to do similar for other
architectures. For this specific problem I wonder if rather than
skipping the event the event can be fixed with domain and core set to
1 ? This would provide a little additional coverage.

Thanks,
Ian

> +  # hv_gpci/event,partition_id=?/
> +  # Hence skip these events for ppc.
> +  if echo "$p" |grep -Eq 'hv_24x7|hv_gpci' ; then
> +    echo "Skipping: Event '$p' in powerpc"
> +    continue
> +  fi
>    echo "Testing $p"
>    result=$(perf stat -e "$p" true 2>&1)
>    if ! echo "$result" | grep -q "$p" && ! echo "$result" | grep -q "<not supported>" ; then
> --
> 2.35.1
>