if trace.ok() {
				// It's important that we traceRelease before we call handoffp, which may also traceAcquire.
				trace.ProcSteal(p2, false)
				traceRelease(trace)
			}
			p2.syscalltick++
			handoffp(p2)
		} else if trace.ok() {
			traceRelease(trace)
		}
	}

	// Wait for remaining Ps to run fn.
	if wait {
		for {