UMTX_CHAINS
#ifndef UMTX_CHAINS
static struct umtxq_chain umtxq_chains[2][UMTX_CHAINS];
for (i = 0; i < UMTX_CHAINS; ++i) {
for (j = 0; j < UMTX_CHAINS; ++j) {
for (j = 0; j < UMTX_CHAINS; j++) {
for (j = 0; j < UMTX_CHAINS; ++j) {
for (j = 0; j < UMTX_CHAINS; ++j) {
key->hash = ((n * GOLDEN_RATIO_PRIME) >> UMTX_SHIFTS) % UMTX_CHAINS;
static struct umtx_shm_reg_head umtx_shm_registry[UMTX_CHAINS];