flags := gcDrainFlushBgCredit
	if untilPreempt {
		flags |= gcDrainUntilPreempt
	}
	gcDrain(gcw, flags)
}

// gcDrainMarkWorkerFractional is a wrapper for gcDrain that exists to better account
// mark time in profiles.
func gcDrainMarkWorkerFractional(gcw *gcWork) {
	gcDrain(gcw, gcDrainFractional|gcDrainUntilPreempt|gcDrainFlushBgCredit)
}

						unlock(&sched.lock)
					}
				}
				// Go back to draining, this time
				// without preemption.
				gcDrainMarkWorkerDedicated(&pp.gcw, false)
			case gcMarkWorkerFractionalMode:
				gcDrainMarkWorkerFractional(&pp.gcw)
			case gcMarkWorkerIdleMode:
				gcDrainMarkWorkerIdle(&pp.gcw)
			}
			casgstatus(gp, _Gwaiting, _Grunning)
		})

		// Account for time and mark us as stopped.