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selftests/powerpc/pmu/: Add interface test for mmcr0_pmccext bit
authorAthira Rajeev <atrajeev@linux.vnet.ibm.com>
Thu, 27 Jan 2022 07:20:03 +0000 (12:50 +0530)
committerMichael Ellerman <mpe@ellerman.id.au>
Tue, 1 Mar 2022 12:39:27 +0000 (23:39 +1100)
commitdc72ac1ecd342ec2845dc05c48b37a64de502fa8
tree7e247fb96238e642cf0712787eec4c7b5d67fc61tree | snapshot
parent148a9c5ab0dc68645d6c643119b499cd2e8e7629commit | diff
selftests/powerpc/pmu/: Add interface test for mmcr0_pmccext bit

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
tools/testing/selftests/powerpc/pmu/sampling_tests/.gitignore diff | blob | history
tools/testing/selftests/powerpc/pmu/sampling_tests/Makefile diff | blob | history
tools/testing/selftests/powerpc/pmu/sampling_tests/mmcr0_pmccext_test.c [new file with mode: 0644] blob
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