[PATCH v2 0/3] perf/x86/amd/uncore: Add common helpers and Hygon support

[Qi Liu]

This series adds initial Hygon uncore PMU support.

Hygon uncore PMUs use a programming model close to the AMD uncore PMU,
so this series factors out a small set of common helpers for perf event
handling, counter assignment and per-CPU context management.

The Hygon-specific support is kept in the Hygon driver. This series
supports the Hygon DF and DF IOD PMUs. No Hygon-specific logic is
added to the AMD driver.

Changes since RFC:
  - Address sashiko bot review.
Changes since v1:
  - Rename the helper namespace to amd_uncore_common_* to avoid
    an generic uncore_common_* prefix, and to keep it distinct
    from the existing amd_uncore_* names.


Qi Liu (3):
  perf/x86/amd/uncore: Add common PMU helper functions
  perf/x86/amd/uncore: Convert AMD driver to common PMU helpers
  perf/x86/amd/uncore: Add Hygon uncore PMU support

 arch/x86/events/Kconfig                 |  17 +
 arch/x86/events/amd/Makefile            |   4 +
 arch/x86/events/amd/amd_uncore_common.c | 403 +++++++++++++++++
 arch/x86/events/amd/amd_uncore_common.h | 114 +++++
 arch/x86/events/amd/hygon_uncore.c      | 556 +++++++++++++++++++++++
 arch/x86/events/amd/uncore.c            | 578 +++---------------------
 arch/x86/include/asm/msr-index.h        |   2 +
 arch/x86/include/asm/perf_event.h       |  20 +
 include/linux/cpuhotplug.h              |   3 +
 9 files changed, 1192 insertions(+), 505 deletions(-)
 create mode 100644 arch/x86/events/amd/amd_uncore_common.c
 create mode 100644 arch/x86/events/amd/amd_uncore_common.h
 create mode 100644 arch/x86/events/amd/hygon_uncore.c

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2.34.1