linux-kernel - [PATCH 0/4] perf: ampere: Add support for Ampere SoC PMUs

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Date:   Wed, 21 Jun 2023 18:11:37 -0700
From:   Ilkka Koskinen <ilkka@...amperecomputing.com>
To:     Will Deacon <will@...nel.org>, Robin Murphy <robin.murphy@....com>,
        Besar Wicaksono <bwicaksono@...dia.com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Mark Rutland <mark.rutland@....com>
Cc:     Ilkka Koskinen <ilkka@...amperecomputing.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 0/4] perf: ampere: Add support for Ampere SoC PMUs

Changes since v3:
    * use_64b_counter_reg => has_atomic_dword (patch 1/4)
    * Removed the unnecessary hook for group validation (patch 3/4)
    * Added group config validation to ampere_cspmu_validate_event() (patch 4/4) 
    * Rebased the patchset

Changes since v2:
    * Changed to use supports_64bits_atomics() and replaced the split writes
      with lo_hi_writeq()
    * Added implementation specific group validation to patch 3
    * Dropped shared interrupt patch
    * Removed unnecessary filter_enable parameter from ampere module
    * Added group validation to ampere module

Changes since v1:
    * Rather than creating a completely new driver, implemented as a submodule
      of Arm CoreSight PMU driver
    * Fixed shared filter handling

Ilkka Koskinen (4):
  perf: arm_cspmu: Split 64-bit write to 32-bit writes
  perf: arm_cspmu: Support implementation specific filters
  perf: arm_cspmu: Support implementation specific validation
  perf: arm_cspmu: ampere_cspmu: Add support for Ampere SoC PMU

 .../admin-guide/perf/ampere_cspmu.rst         |  29 +++
 drivers/perf/arm_cspmu/Makefile               |   2 +-
 drivers/perf/arm_cspmu/ampere_cspmu.c         | 232 ++++++++++++++++++
 drivers/perf/arm_cspmu/ampere_cspmu.h         |  17 ++
 drivers/perf/arm_cspmu/arm_cspmu.c            |  28 ++-
 drivers/perf/arm_cspmu/arm_cspmu.h            |   6 +
 6 files changed, 309 insertions(+), 5 deletions(-)
 create mode 100644 Documentation/admin-guide/perf/ampere_cspmu.rst
 create mode 100644 drivers/perf/arm_cspmu/ampere_cspmu.c
 create mode 100644 drivers/perf/arm_cspmu/ampere_cspmu.h

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