[SRU][B][D][Patch 0/2] Enhanced CPU-MF hardware counters - kernel part (LP: 1836860)

frank.heimes at canonical.com frank.heimes at canonical.com
Wed Jul 24 16:30:33 UTC 2019

Buglink: https://bugs.launchpad.net/bugs/1836860

SRU Justification:


* Enhanced CPU-MF hardware counters - fix lack of support of new hardware


* 46a984ffb86c8542fa510656fa8cb33befe8ee8f 46a984ff "s390/cpum_cf: Add support for CPU-MF SVN 6"

* 820bace734722715c643dcb5f74b502cb912d4eb 820bace "s390/cpumf: Add extended counter set definitions for model 8561 and 8562"

[Test Case]

* try CPU-Measurement Facility counter on z14 and next generation hardware - only IBM can do that now

[Regression Potential] 

* The regression potential can be considered as low since these changes are limited to arch/s390

* do only touch perf_* code

* and mainly add code (rather than modify or remove)

[Other Info]

* first commit is taken from 5.2, second from 5.3-rc1

Thomas Richter (2):
  From: Thomas Richter <tmricht at linux.ibm.com>
  From: Thomas Richter <tmricht at linux.ibm.com>

 arch/s390/kernel/perf_cpum_cf.c        |  15 +++--
 arch/s390/kernel/perf_cpum_cf_events.c | 109 +++++++++++++++++++++++----------
 2 files changed, 86 insertions(+), 38 deletions(-)


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