[PATCH 2/4] perf vendor events arm64: AmpereOne: Mark affected STALL_* events impacted by errata

[John Garry]

On 03/08/2023 22:13, Ilkka Koskinen wrote:
> Per errata AC03_CPU_29, STALL_SLOT_FRONTEND, STALL_FRONTEND, and STALL
> events are not counting as expected. The follow up metrics patch will
> include correct way to calculate the impacted events.
> 
> Signed-off-by: Ilkka Koskinen <ilkka at os.amperecomputing.com>

Reviewed-by: John Garry <john.g.garry at oracle.com>

> ---
>   .../arch/arm64/ampere/ampereone/pipeline.json        | 12 +++++++++---
>   1 file changed, 9 insertions(+), 3 deletions(-)
> 
> diff --git a/tools/perf/pmu-events/arch/arm64/ampere/ampereone/pipeline.json b/tools/perf/pmu-events/arch/arm64/ampere/ampereone/pipeline.json
> index f9fae15f7555..711028377f3e 100644
> --- a/tools/perf/pmu-events/arch/arm64/ampere/ampereone/pipeline.json
> +++ b/tools/perf/pmu-events/arch/arm64/ampere/ampereone/pipeline.json
> @@ -1,18 +1,24 @@
>   [
>       {
> -        "ArchStdEvent": "STALL_FRONTEND"
> +        "ArchStdEvent": "STALL_FRONTEND",
> +        "Errata": "Errata AC03_CPU_29",
> +        "BriefDescription": "Impacted by errata, use metrics instead -"

why end with a '-'?

>       },
>       {
>           "ArchStdEvent": "STALL_BACKEND"
>       },
>       {
> -        "ArchStdEvent": "STALL"
> +        "ArchStdEvent": "STALL",
> +        "Errata": "Errata AC03_CPU_29",
> +        "BriefDescription": "Impacted by errata, use metrics instead -"
>       },
>       {
>           "ArchStdEvent": "STALL_SLOT_BACKEND"
>       },
>       {
> -        "ArchStdEvent": "STALL_SLOT_FRONTEND"
> +        "ArchStdEvent": "STALL_SLOT_FRONTEND",
> +        "Errata": "Errata AC03_CPU_29",
> +        "BriefDescription": "Impacted by errata, use metrics instead -"
>       },
>       {
>           "ArchStdEvent": "STALL_SLOT"