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For PERF_SAMPLE_BRANCH_STACK sample type, different branch_sample_type, ie branch filters are supported. All the branch filters are not supported in powerpc. Example, power10 platform supports any, ind_call and cond branch filters. Whereas, it is different in power9. Testcase checks event open for invalid and valid branch sample types. The branch types for testcase are picked from "perf_branch_sample_type" in perf_event.h 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/20220610134113.62991-13-atrajeev@linux.vnet.ibm.com