[ltt-dev] compiling tracepoints in UST

[Mathieu Desnoyers]

* Sylvain Geneves (sylvain.geneves at inrialpes.fr) wrote:
> Hi,
>
> I tried to use tracepoints with UST but i have a problem when it comes  
> to compile my code...
> for a better understanding, i gave it a try with the tracepoint exemple  
> from the UST manual, replacing my_channel with ust and it gives the same  
> thing.
>
> Here is the content of the problematic file :
>
> 1 #include <ust/tracepoint.h>
> 2
> 3 DECLARE_TRACE(ust_myevent, TPPROTO(int v, char *st), TPARGS(v, st));

Try replacing TPPROTO and TPARGS by TP_PROTO and TP_ARGS. This is an API
change that came from the kernel implementation.

Thanks,

Mathieu

>
>
> Here is the error :
>
> tp.h:3: error: expected ‘)’ before ‘(’ token
> tp.h:3: error: expected ‘)’ before ‘(’ token
> tp.h:3: error: expected ‘)’ before ‘(’ token
> tp.h: In function ‘register_trace_ust_myevent’:
> tp.h:3: error: ‘probe’ undeclared (first use in this function)
> tp.h:3: error: (Each undeclared identifier is reported only once
> tp.h:3: error: for each function it appears in.)
> tp.h: At top level:
> tp.h:3: error: expected ‘)’ before ‘(’ token
> tp.h: In function ‘unregister_trace_ust_myevent’:
> tp.h:3: error: ‘probe’ undeclared (first use in this function)
>
>
>
> I've got some difficulties understanding the nested macros behind  
> DECLARE_TRACE, and i can't see why such an error is triggered, so if  
> anyone has a clue i'd really appreciate it.
>
> I'm using the git version of UST, and here's my output of gcc --version:
> gcc (Debian 4.4.4-1) 4.4.4
>
>
> Thanks in advance
> Regards
> Sylvain
>
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-- 
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com