Name:         "GoSyscallBegin",
		Args:         []string{"dt", "p_seq", "stack"},
		IsTimedEvent: true,
		StackIDs:     []int{2},
	},
	EvGoSyscallEnd: event.Spec{
		Name:         "GoSyscallEnd",
		Args:         []string{"dt"},
		StartEv:      EvGoSyscallBegin,
		IsTimedEvent: true,
	},
	EvGoSyscallEndBlocked: event.Spec{
		Name:         "GoSyscallEndBlocked",
		Args:         []string{"dt"},

// be reordered. Some events, such as GoWaiting need to look ahead for follow-up
// events to determine the correct translation. GoSyscall, which is an
// instantaneous event, gets turned into a 1 ns long pair of
// GoSyscallStart+GoSyscallEnd, unless we observe a GoSysBlock, in which case we
// emit a GoSyscallStart+GoSyscallEndBlocked pair with the correct duration
// (i.e. starting at the original GoSyscall).
//

	pp := tl.mp.p.ptr()
	pp.trace.mSyscallID = int64(tl.mp.procid)
	tl.eventWriter(traceGoRunning, traceProcRunning).commit(traceEvGoSyscallBegin, pp.trace.nextSeq(tl.gen), tl.stack(1))
}

// GoSysExit emits a GoSyscallEnd event, possibly along with a GoSyscallBlocked event
// if lostP is true.
//
// lostP must be true in all cases that a goroutine loses its P during a syscall.

GoStart dt=211 g=18 g_seq=1
GoBlock dt=3533 reason_string=12 stack=21
GoStart dt=41 g=21 g_seq=1
GoBlock dt=150 reason_string=10 stack=22
GoStart dt=93 g=20 g_seq=1
GoSyscallBegin dt=51 p_seq=2 stack=23
GoSyscallEnd dt=400
GoBlock dt=582 reason_string=15 stack=25
GoStart dt=26 g=23 g_seq=1
HeapAlloc dt=50 heapalloc_value=1646592
UserRegionBegin dt=2921 task=5 name_string=31 stack=26