gp.m.locksHeldLen++
		checkRanks(gp, gp.m.locksHeld[i-1].rank, rank)
		gp.m.locksHeldLen--
	})
}

// nosplit to ensure it can be called in as many contexts as possible.
//
//go:nosplit
func checkLockHeld(gp *g, l *mutex) bool {
	for i := gp.m.locksHeldLen - 1; i >= 0; i-- {
		if gp.m.locksHeld[i].lockAddr == uintptr(unsafe.Pointer(l)) {
			return true
		}
	}
	return false
}