[RFC 0/8] perf/x86: Add msr probe interface

[Jiri Olsa <jolsa@kernel.org>]

hi,
following up on [1], this patchset factors out the MSR
probe code and use it in msr,cstate* and rapl PMUs.

The functionality stays the same with one exception:
the event is not exported if the rdmsr return zero
on event's msr.

I still need to run tests on other models and verify
rapl model table properly, but I'd like to ask it
something like this would be acceptable.

Also available in:
  git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git
  perf/msr

thanks,
jirka


[1] https://lore.kernel.org/lkml/20190301114250.GA23459@krava/
---
Jiri Olsa (8):
      perf/x86: Add msr probe interface
      perf/x86/msr: Use new probe function
      perf/x86/cstate: Use new probe function
      perf/x86/rapl: Use new msr detection interface
      perf/x86/rapl: Get rapl_cntr_mask from new probe framework
      perf/x86/rapl: Get msr values from new probe framework
      perf/x86/rapl: Get attributes from new probe framework
      perf/x86/rapl: Get quirk state from new probe framework

 arch/x86/events/Makefile       |   2 +-
 arch/x86/events/intel/cstate.c |  92 +++++++++++++++++++++++------------------------
 arch/x86/events/intel/rapl.c   | 341 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++----------------------------------------------------------------------------------------------------------
 arch/x86/events/msr.c          |  76 ++++++++++++++++++---------------------
 arch/x86/events/probe.c        |  36 +++++++++++++++++++
 arch/x86/events/probe.h        |  22 ++++++++++++
 6 files changed, 272 insertions(+), 297 deletions(-)
 create mode 100644 arch/x86/events/probe.c
 create mode 100644 arch/x86/events/probe.h