RACK_REG_PACING
rack->r_ctl.pacing_method |= RACK_REG_PACING;
rack->r_ctl.pacing_method |= RACK_REG_PACING;
rack->r_ctl.pacing_method |= RACK_REG_PACING;
rack->r_ctl.pacing_method |= RACK_REG_PACING;
rack->r_ctl.pacing_method |= RACK_REG_PACING;
rack->r_ctl.pacing_method |= RACK_REG_PACING;
if (rack->r_ctl.pacing_method & RACK_REG_PACING)