MEMBARRIER_CMD_GLOBAL
MEMBARRIER_CMD_SHARED = MEMBARRIER_CMD_GLOBAL,
(MEMBARRIER_CMD_GLOBAL | MEMBARRIER_CMD_GLOBAL_EXPEDITED \
cmd_mask &= ~MEMBARRIER_CMD_GLOBAL;
case MEMBARRIER_CMD_GLOBAL:
if (!(ret & MEMBARRIER_CMD_GLOBAL))
int cmd = MEMBARRIER_CMD_GLOBAL, flags = 0;