const sweepBatchSize = 10
		nSwept := 0
		for sweepone() != ^uintptr(0) {
			nSwept++
			if nSwept%sweepBatchSize == 0 {
				goschedIfBusy()
			}
		}
		for freeSomeWbufs(true) {
			// N.B. freeSomeWbufs is already batched internally.
			goschedIfBusy()
		}
		lock(&sweep.lock)
		if !isSweepDone() {
			// This can happen if a GC runs between
			// gosweepone returning ^0 above

//
//go:nosplit
func goschedguarded() {
	mcall(goschedguarded_m)
}

// goschedIfBusy yields the processor like gosched, but only does so if
// there are no idle Ps or if we're on the only P and there's nothing in
// the run queue. In both cases, there is freely available idle time.
//
//go:nosplit
func goschedIfBusy() {
	gp := getg()
	// Call gosched if gp.preempt is set; we may be in a tight loop that