gs.syscallEnd(start, true, ctx)
			gs.stop(start, ev.Stack(), ctx)
			delete(g.inSyscall, proc)
		}
	}
	// TODO(mknyszek): Consider modeling procs differently and have them be
	// transition to and from NotExist when GOMAXPROCS changes. We can emit
	// events for this to clearly delineate GOMAXPROCS changes.

	if viewerEv.Name != "" {
		ctx.Instant(viewerEv)
	}
}