Re: [RFD 5/5] tracing: Add trace_irqsoff tracepoints

[Daniel Wagner]

On 05/01/2015 11:23 AM, Daniel Wagner wrote:
> On 05/01/2015 02:54 AM, Steven Rostedt wrote:
>> On Thu, 30 Apr 2015 21:14:52 -0500
>> Tom Zanussi <tom.zanussi@xxxxxxxxxxxxxxx> wrote:
>>
>>
>>>> 'hist:key=latency.bucket:val=hitcount:sort=latency if cpu==0'
>>>>
>>>> but I haven't got this working. I didn't spend much time figuring out
>>>> why this doesn't work. Even if the above is working you still
>>>
>>> I think it doesn't work because the tracepoint doesn't actually have a
>>> 'cpu' field to use in the filter...
>>
>> Perhaps we should add special fields that don't use the tracepoint
>> field, but can use generically know fields that are always known when
>> the tracepoint is triggered. COMM could be one, as well as CPU.

Here a first attempt: