selftests/powerpc/pmu: Include mmap_buffer field as part of struct event
To enable the capturing of samples as part of perf event, add a new field "mmap_buffer" to "struct event". This field is a place-holder for sample collection 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/20220127072012.662451-2-kjain@linux.ibm.com
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8a0edc72
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