[PATCH 0/4] workqueue_tracepoint: Add worklet tracepoints for worklet lifecycle tracing

[Zhaolei <zhaolei@cn.fujitsu.com>]

Ingo Molnar wrote:
> ...
> Basically, i'd suggest the following complete set of events instead:
> 
>  TRACE_EVENT(workqueue_create
>  TRACE_EVENT(workqueue_flush              /* NEW */
>  TRACE_EVENT(workqueue_destroy
> 
>  TRACE_EVENT(worklet_enqueue              /* NEW */
>  TRACE_EVENT(worklet_enqueue_delayed      /* NEW */
> 
>  TRACE_EVENT(worklet_execute              /* instead of workqueue_execution */
>  TRACE_EVENT(worklet_complete             /* NEW */
> 
>  TRACE_EVENT(worklet_cancel               /* NEW */
> 
> This allows the understanding of the life cycle of a workqueue and 
> of worklets that enter that workqueue. Note the distinction between 
> workqueue and worklet (work) - that is essential.
> 
> The parameters of the events are obvious, with one detail: i'd 
> suggest a 'cpu' parameter to the enqueue events, to allow the 
> mapping of the _on(..cpu) variants too.
> 
> I would not bother with schedule_on_each_cpu() instrumentation - 
> it's rarely used.
> 
> 	Ingo
> 
Hello, Ingo

These patchs add tracepoints for per-worklet tracing.
Now we have enough tracepoints to start makeing trace_workqueue.c support
worklet time mesurement.

Thanks
Zhaolei