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selftests/powerpc: Update bhrb filter sampling test for multiple branch filters

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For PERF_SAMPLE_BRANCH_STACK sample type, different branch_sample_type,
ie branch filters are supported. The testcase "bhrb_filter_map_test"
tests the valid and invalid filter maps in different powerpc platforms.
Update this testcase to include scenario to cover multiple branch
filters at sametime. Since powerpc doesn't support multiple filters at
sametime, expect failure during perf_event_open.

Reported-by: Disha Goel <disgoel@linux.vnet.ibm.com>
Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Reviewed-by: Kajol Jain <kjain@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220921145255.20972-3-atrajeev@linux.vnet.ibm.com
This commit is contained in:
Athira Rajeev 2022-09-21 20:22:55 +05:30 committed by Michael Ellerman
parent b9c001276d
commit 18213532de
1 changed files with 9 additions and 0 deletions
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9
tools/testing/selftests/powerpc/pmu/sampling_tests/bhrb_filter_map_test.c
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@ -96,6 +96,15 @@ static int bhrb_filter_map_test(void)
} }
} }
/*
* Combine filter maps which includes a valid branch filter and an invalid branch
* filter. Example: any ( PERF_SAMPLE_BRANCH_ANY) and any_call
* (PERF_SAMPLE_BRANCH_ANY_CALL).
* The perf_event_open should fail in this case.
*/
event.attr.branch_sample_type = PERF_SAMPLE_BRANCH_ANY | PERF_SAMPLE_BRANCH_ANY_CALL;
FAIL_IF(!event_open(&event));
return 0; return 0;
} }