ktr_csw
struct ktr_csw *kc;
__strong_alias(ktr_csw,nullop); /* Probes */
void ktr_csw(int, int, const struct syncobj *);
ktr_csw(a, b, c);
static void ktrcsw(struct ktr_csw *);
ktrcsw(struct ktr_csw *cs)
struct ktr_csw *cs = (struct ktr_csw *)(kth + 1);