cpacfstats: Add size setting to perf event
cpacfstats: Add size setting to perf event

The newer perf_event_open syscall needs a struct
perf_event_attr with the size field set correctly. Older
versions did not even provide this field. However, this
field is now set to the correct size value.

Signed-off-by: Harald Freudenberger <28e445f7b629c0b6f5fe74d194711d7f50b6d81d@linux.vnet.ibm.com>
Signed-off-by: Michael Holzheu <db4757c56f54651f568cc7cda79cd93c781b1605@linux.vnet.ibm.com>

ibm-s390-tools/s390-tools,ibm-s390-tools/s390-tools,ibm-s390-tools/s390-tools,ibm-s390-tools/s390-tools