testCPUProfile(t, matches, func(duration time.Duration) {
		t := time.After(duration)
		c := make(chan bool)
		for {
			go func() {
				growstack1()
				c <- true
			}()
			select {
			case <-t:
				return
			case <-c:
			}
		}
	})
}

//go:noinline
func growstack1() {
	growstack(10)
}

				// saveblockevent)
				mp.profStack[0] -= 1
			}
			nstk += fpTracebackPCs(unsafe.Pointer(getfp()), mp.profStack[1:])
		} else {
			mp.profStack[1] = gp.m.curg.sched.pc
			nstk += 1 + fpTracebackPCs(unsafe.Pointer(gp.m.curg.sched.bp), mp.profStack[2:])
		}
	}

	saveBlockEventStack(cycles, rate, mp.profStack[:nstk], which)
	releasem(mp)
}