[PATCH 0/6] Add Andes PMU extension support

[Yu-Chien Peter Lin]

On Fri, Oct 06, 2023 at 01:20:27PM +0100, Lad, Prabhakar wrote:
> 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.

Thanks for reporting, this happens on my Tinker-V board as well.
I will look into this issue.

Thanks,
Peter Lin

> Cheers,
> Prabhakar