[PATCH 0/6] Add Andes PMU extension support

[Lad, Prabhakar]

Hi Lin-san,

On Wed, Sep 6, 2023 at 12:17 PM Yu Chien Peter Lin
<peterlin at andestech.com> wrote:
>
> This patch series enables perf tool to utilize Andes PMU
> extension via PMU SBI calls, provides PMU device callbacks
> for event sampling and mode filtering.
>
> We also provide a PMU node example of AX45MP in the last
> patch.
>
> The OpenSBI and Linux patches can be found on Andes Technology GitHub
> - https://github.com/andestech/opensbi/commits/andes-pmu-support
> - https://github.com/andestech/linux/commits/andes-pmu-support
>
> Yu Chien Peter Lin (6):
>   sbi: sbi_pmu: Add hw_counter_filter_mode() to pmu device
>   platform: include: andes45: Add PMU related CSR defines
>   platform: andes: Add Andes custom PMU support
>   platform: andes: Enable Andes PMU for AE350
>   platform: rzfive: Enable Andes PMU for RZ/Five
>   docs: pmu: Add Andes PMU node example
>
>  docs/pmu_support.md                        | 87 ++++++++++++++++++++++
>  include/sbi/sbi_pmu.h                      |  6 ++
>  lib/sbi/sbi_pmu.c                          |  5 +-
>  platform/generic/Kconfig                   |  2 +
>  platform/generic/andes/Kconfig             |  4 +
>  platform/generic/andes/ae350.c             |  2 +
>  platform/generic/andes/andes_pmu.c         | 85 +++++++++++++++++++++
>  platform/generic/andes/objects.mk          |  1 +
>  platform/generic/include/andes/andes45.h   | 26 +++++++
>  platform/generic/include/andes/andes_pmu.h | 12 +++
>  platform/generic/renesas/rzfive/rzfive.c   |  2 +
>  11 files changed, 231 insertions(+), 1 deletion(-)
>  create mode 100644 platform/generic/andes/andes_pmu.c
>  create mode 100644 platform/generic/include/andes/andes_pmu.h
>
I tried these patches on the RZ/Five SMARC EVK and I am seeing kernel
freeze when trying to quit perf.

Cheers,
Prabhakar