Re: [PATCH 1/4] tracing: add DEFINE_TRACE_FMT to tracepoint.h

[Mathieu Desnoyers]

* Steven Rostedt (rostedt@xxxxxxxxxxx) wrote:
> From: Steven Rostedt <srostedt@xxxxxxxxxx>
> 
> This patch creates a DEFINE_TRACE_FMT to map to DECLARE_TRACE.
> This allows for the developers to place format strings and
> args in with their tracepoint declaration. A tracer may now
> override the DEFINE_TRACE_FMT macro and use it to record
> a default format.
> 

Hi Steven,

How comes does a DEFINE_* maps to a DECLARE_* ?

Usually, DEFINE_* are meant to be put in .c files. DECLARE_* are in
headers. I don't see how the mapping you propose here can be
semantically correct ?

Mathieu

> Signed-off-by: Steven Rostedt <srostedt@xxxxxxxxxx>
> ---
>  include/linux/tracepoint.h |    3 +++
>  1 files changed, 3 insertions(+), 0 deletions(-)
> 
> diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h
> index 7570054..34ae464 100644
> --- a/include/linux/tracepoint.h
> +++ b/include/linux/tracepoint.h
> @@ -153,4 +153,7 @@ static inline void tracepoint_synchronize_unregister(void)
>  	synchronize_sched();
>  }
>  
> +#define DEFINE_TRACE_FMT(name, proto, args, fmt)		\
> +	DECLARE_TRACE(name, TPPROTO(proto), TPARGS(args))
> +
>  #endif
> -- 
> 1.5.6.5
> 
> -- 
> 

-- 
Mathieu Desnoyers
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F  BA06 3F25 A8FE 3BAE 9A68
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/