[PATCH 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.

There is also an Hygon L3 PMU patch currently under review:
https://lore.kernel.org/lkml/9a4731a46cc0a7645838bd848a40a6574a97bad6.1775548724.git.fuhao@xxxxxxxxxxxxxx/
That support can be rebased onto this common helper structure in
follow-up patches.

Changes since RFC:
  - Address sashiko bot review.

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/hygon_uncore.c  | 551 ++++++++++++++++++++++++++
 arch/x86/events/amd/uncore.c        | 578 ++++------------------------
 arch/x86/events/amd/uncore_common.c | 403 +++++++++++++++++++
 arch/x86/events/amd/uncore_common.h | 114 ++++++
 arch/x86/include/asm/msr-index.h    |   2 +
 arch/x86/include/asm/perf_event.h   |  20 +
 include/linux/cpuhotplug.h          |   3 +
 9 files changed, 1187 insertions(+), 505 deletions(-)
 create mode 100644 arch/x86/events/amd/hygon_uncore.c
 create mode 100644 arch/x86/events/amd/uncore_common.c
 create mode 100644 arch/x86/events/amd/uncore_common.h

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2.34.1