selftests/powerpc/pmu/: Add interface test for mmcr0_pmccext bit

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The testcase uses cycles event to check the PMCCEXT bit setting in
Monitor Mode Control Register 0 (MMCR0). Check if perf interface sets
this control bit in MMCR0 on ISA v3.1 platform.

Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
[mpe: Add error checking, drop GET_MMCR_FIELD, add to .gitignore]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220127072012.662451-12-kjain@linux.ibm.com

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Athira Rajeev 2022-01-27 12:50:03 +05:30 • committed by Michael Ellerman

parent a7c0ab2e61

commit b24142b9d2

3 changed files with 61 additions and 1 deletions

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1

tools/testing/selftests/powerpc/pmu/sampling_tests/.gitignore vendored

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tools/testing/selftests/powerpc/pmu/sampling_tests/Makefile

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59

tools/testing/selftests/powerpc/pmu/sampling_tests/mmcr0_pmccext_test.c

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