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[RESEND,0/3] selftests/powerpc: A few fixes on powerpc selftests

Message ID 20200408223543.21168-1-desnesn@linux.ibm.com (mailing list archive)
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Series selftests/powerpc: A few fixes on powerpc selftests | expand

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Desnes A. Nunes do Rosario April 8, 2020, 10:35 p.m. UTC 
This patchseries addresses a few fixes on powerpc selftests (first and
second patch are being resent).

The first fix has to do with the extra counts on PMCs resets, which not
only are shown on the trace_logs, but can also invalidate the results of a
few selftests. On the other hand, the second fix proper addresses the Per-
formance Monitor Alert (PMAE) bit on MMCR0 when freezing counters are dis-
abled on cycles_with_freeze_test selftest. Lastly, the third fix adds a
memory barrier on count_pmc() to ensure read consistency of PMCs. This is
necessary since these values are usually accounted on ebb_handlers to val-
lidade tests results, such as the overflow values on pmc56_overflow_test.

Desnes A. Nunes do Rosario (2):
  selftests/powerpc: Use write_pmc instead of count_pmc to reset PMCs on
    ebb tests
  selftests/powerpc: ensure PMC reads are set and ordered on count_pmc

Gustavo Romero (1):
  selftests/powerpc: enable performance alerts when freezing counters on
    cycles_with_freeze_test selftest

 .../powerpc/pmu/ebb/back_to_back_ebbs_test.c         |  2 +-
 .../testing/selftests/powerpc/pmu/ebb/cycles_test.c  |  2 +-
 .../powerpc/pmu/ebb/cycles_with_freeze_test.c        |  4 ++--
 .../powerpc/pmu/ebb/cycles_with_mmcr2_test.c         |  2 +-
 tools/testing/selftests/powerpc/pmu/ebb/ebb.c        |  6 +++++-
 .../powerpc/pmu/ebb/ebb_on_willing_child_test.c      |  2 +-
 .../selftests/powerpc/pmu/ebb/lost_exception_test.c  |  2 +-
 .../selftests/powerpc/pmu/ebb/multi_counter_test.c   | 12 ++++++------
 .../selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c |  2 +-
 .../selftests/powerpc/pmu/ebb/pmae_handling_test.c   |  2 +-
 .../selftests/powerpc/pmu/ebb/pmc56_overflow_test.c  |  2 +-
 11 files changed, 21 insertions(+), 17 deletions(-)