Merge branch 'for-next/perf-user-counter-access' into for-next/perf

* for-next/perf-user-counter-access:
  Documentation: arm64: Document PMU counters access from userspace
  arm64: perf: Enable PMU counter userspace access for perf event
  arm64: perf: Add userspace counter access disable switch
  perf: Add a counter for number of user access events in context
  x86: perf: Move RDPMC event flag to a common definition