linux-kernel - Re: [PATCH] tools lib traceevent: Handle dynamic array's element size properly

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Message-ID: <20130122131646.GB1037@krava.brq.redhat.com>
Date:	Tue, 22 Jan 2013 14:16:47 +0100
From:	Jiri Olsa <jolsa@...hat.com>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	linux-kernel@...r.kernel.org,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...e.hu>,
	Namhyung Kim <namhyung@...nel.org>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [PATCH] tools lib traceevent: Handle dynamic array's element
 size properly

On Mon, Jan 21, 2013 at 11:45:42PM -0500, Steven Rostedt wrote:
> On Mon, 2013-01-21 at 13:44 +0100, Jiri Olsa wrote:

SNIP

> > +	for (i = 0; table[i].type; i++) {
> > +		if (!strcmp(table[i].type, field->type_dyn))
> > +			return table[i].size;
> > +	}
> > +
> > +	return 0;
> > +}
> > +
> >  static int event_read_fields(struct event_format *event, struct format_field **fields)
> >  {
> >  	struct format_field *field = NULL;
> > @@ -1390,7 +1418,7 @@ static int event_read_fields(struct event_format *event, struct format_field **f
> >  				field->type = new_type;
> >  				strcat(field->type, " ");
> >  				strcat(field->type, field->name);
> > -				free_token(field->name);
> > +				field->type_dyn = field->name;
> 
> This is only used in this function (the field_dynamic_elem_size() is
> only called here). Can we not add the field->type_dyn, and just use a
> local variable here. You just need to make sure you free it correctly.

ook, will send v2

thanks,
jirka
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