[lttng-dev] newbie and kernel trace

[Jérémie Galarneau]

Hi Stéphane,

We're going to need more details than that. Which kernel version are you using?
Can you see the other kernel events in your trace? If not, can you
show us how you are setting up your session?

Thanks,
Jérémie

On Fri, May 17, 2013 at 10:58 AM, Stéphane ANCELOT <sancelot at free.fr> wrote:
> Hi,
>
> I am trying to reimplement LTTNG 2. in xenomai api.
>
> the main problem is that I do not sea any of my new events available in
> lttng 2.
>
>
> my kernel compiles fine and  here is what I done to set it up :
>
> file include/trace/events/pod.h :
>
> #undef TRACE_SYSTEM
> #define TRACE_SYSTEM xenotrace
>
> #if !defined(_XENOTRACE_H) || defined(TRACE_HEADER_MULTI_READ)
>
> #define _XENOTRACE_H
>
> #include <linux/tracepoint.h>
>
>
> TRACE_EVENT(    xn_nucleus_thread_init,
>                 TP_PROTO(struct xnthread *thread,char *thread_name,xnflags_t
> flags,const char *class,int prio),
>                 TP_ARGS(thread,thread_name,flags,class,prio),
>
>                 TP_STRUCT__entry(
>                  __field(struct xnthread *,thread)
>                  __array(char ,thread_name,      XNOBJECT_NAME_LEN   )
>                  __field(xnflags_t,flags)
>                  __array(char,class,      XNOBJECT_NAME_LEN  )
>                  __field(int,    prio                       )
>                 ),
>
>               TP_fast_assign(
>                __entry->thread   = thread;
>                memcpy(__entry->thread_name,thread_name, XNOBJECT_NAME_LEN);
>                __entry->flags   = flags;
>                memcpy(__entry->class,class, XNOBJECT_NAME_LEN);
>                __entry->prio   = prio;
>                 ),
>
>                TP_printk("thread %p thread_name %s flags %lu class %s prio
> %d",
>                __entry->thread, __entry->thread_name,
> __entry->flags,__entry->class,
>                __entry->prio)
> );
>
> #endif
>
> /* This part must be outside protection */
> #include <trace/define_trace.h>
>
>
>
> in pod.h :
> #define CREATE_TRACE_POINTS
> #include <trace/events/pod.h>
>
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> lttng-dev at lists.lttng.org
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-- 
Jérémie Galarneau
EfficiOS Inc.
http://www.efficios.com