EVENT_VAR
#define EVENT_PTR(_id, _suffix) &EVENT_VAR(_id, _suffix).attr.attr
PMU_EVENT_ATTR(_name, EVENT_VAR(_id, _suffix), _id, \
#define EVENT_PTR(_cat, _name) (&EVENT_VAR(_cat, _name).attr.attr)
PMU_EVENT_ATTR(name, EVENT_VAR(cat, name), id, cpumf_events_sysfs_show)
static struct perf_pmu_events_attr EVENT_VAR(_id) = { \