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[V2,3/3] tools/testing/selftests/powerpc: Update the bhrb filter sampling test to test for multiple branch filters

Message ID 20220921145255.20972-3-atrajeev@linux.vnet.ibm.com (mailing list archive)
State Accepted
Headers show
Series [V2,1/3] powerpc/perf: Fix branch_filter support for multiple filters in powerpc | expand

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Commit Message

Athira Rajeev Sept. 21, 2022, 2:52 p.m. UTC 
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>
---
Changelog:
 Fixed compile error for undefined branch sample type
 by using PERF_SAMPLE_BRANCH_ANY_CALL instead of
 PERF_SAMPLE_BRANCH_TYPE_SAVE

 .../powerpc/pmu/sampling_tests/bhrb_filter_map_test.c    | 9 +++++++++
 1 file changed, 9 insertions(+)
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Patch

diff --git a/tools/testing/selftests/powerpc/pmu/sampling_tests/bhrb_filter_map_test.c b/tools/testing/selftests/powerpc/pmu/sampling_tests/bhrb_filter_map_test.c
index 8182647c63c8..3f43c315c666 100644
--- a/tools/testing/selftests/powerpc/pmu/sampling_tests/bhrb_filter_map_test.c
+++ b/tools/testing/selftests/powerpc/pmu/sampling_tests/bhrb_filter_map_test.c
@@ -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;
 }