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selftests/powerpc/pmu: Add selftest for checking invalid bits in event code

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Some of the bits in the event code is reserved for specific platforms.
Event code bits 52-59 are reserved in power9, whereas in power10, these
are used for programming Monitor Mode Control Register 3 (MMCR3). Bit 9
in event code is reserved in power9, whereas it is used for programming
"radix_scope_qual" bit 18 in Monitor Mode Control Register 1 (MMCR1).

Testcase to ensure that using reserved bits in event code should cause
event_open to fail.

Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220610134113.62991-24-atrajeev@linux.vnet.ibm.com
This commit is contained in:
Athira Rajeev
2022-06-10 19:11:01 +05:30
committed by Michael Ellerman
parent 122b6b9e57
commit 5196a27978
2 changed files with 68 additions and 1 deletions
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2
tools/testing/selftests/powerpc/pmu/event_code_tests/Makefile
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@@ -3,7 +3,7 @@ CFLAGS += -m64
TEST_GEN_PROGS := group_constraint_pmc56_test group_pmc56_exclude_constraints_test group_constraint_pmc_count_test \
group_constraint_repeat_test group_constraint_radix_scope_qual_test reserved_bits_mmcra_sample_elig_mode_test \
group_constraint_mmcra_sample_test
group_constraint_mmcra_sample_test invalid_event_code_test
top_srcdir = ../../../../../..
include ../../../lib.mk