linux-kernel - Re: [PATCH 13/22] tools lib traceevent: Add cfg80211 plugin

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Date:	Sat, 23 Nov 2013 04:27:30 -0500
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	Jiri Olsa <jolsa@...hat.com>, linux-kernel@...r.kernel.org,
	Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...e.hu>, Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	David Ahern <dsahern@...il.com>
Subject: Re: [PATCH 13/22] tools lib traceevent: Add cfg80211 plugin

On Sat, 23 Nov 2013 00:16:14 +0900
Namhyung Kim <namhyung@...nel.org> wrote:

 
> [SNIP]
> > +unsigned long long process___le16_to_cpup(struct trace_seq *s,
> > +					  unsigned long long *args)
> > +{
> > +	uint16_t *val = (uint16_t *) args[0];
> > +	return val ? (long long) le16toh(*val) : 0;
> > +}
> > +
> > +int PEVENT_PLUGIN_LOADER(struct pevent *pevent)
> > +{
> > +	pevent_register_print_function(pevent,
> > +				       process___le16_to_cpup,
> > +				       PEVENT_FUNC_ARG_INT,
> 
> Just a nitpick.  The function should return int or the return type
> should be _LONG for consistency.

As stated in another reply, the return type is not for the callback, but
instead for the function it is representing.

-- Steve

> 
> Thanks,
> Namhyung
> 
> > +				       "__le16_to_cpup",
> > +				       PEVENT_FUNC_ARG_PTR,
> > +				       PEVENT_FUNC_ARG_VOID);
> > +	return 0;
> > +}
> 
> 

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