kcpc_ctx_alloc
set->ks_ctx = ctx = kcpc_ctx_alloc(KM_SLEEP);
cctx = kcpc_ctx_alloc(KM_SLEEP);
ctx = kcpc_ctx_alloc(KM_SLEEP);
ctx = kcpc_ctx_alloc(kmem_flags);
ctx = kcpc_ctx_alloc(KM_SLEEP);
extern kcpc_ctx_t *kcpc_ctx_alloc(int);