linux-kernel - Re: [PATCH 09/11] tools lib traceevent: Add priv field to struct format

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Date:	Fri, 30 Jan 2015 11:47:51 +0100
From:	Jiri Olsa <jolsa@...hat.com>
To:	Jiri Olsa <jolsa@...nel.org>
Cc:	linux-kernel@...r.kernel.org, Wang Nan <wangnan0@...wei.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	David Ahern <dsahern@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Namhyung Kim <namhyung@...il.com>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
	Tom Zanussi <tzanussi@...il.com>,
	Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [PATCH 09/11] tools lib traceevent: Add priv field to struct
 format_field

On Fri, Jan 30, 2015 at 11:43:03AM +0100, Jiri Olsa wrote:
> From: Wang Nan <wangnan0@...wei.com>
> 
> Introduce a priv field to 'struct format_field' for futher expansion.
> 
> (In https://lkml.org/lkml/2015/1/21/383 , Jiri Olsa gives a suggestion
>  about changing lib traceevent to solve a bug of perf-convert-to-ctf,
>  which is related to duplicated field names. I think his suggestion
>  should be something like this patch. )

oops, I forgot.. this one still needs ACK from Steven and patch
10 depends on that, but the rest is ok to go in even without this

jirka

> 
> Signed-off-by: Wang Nan <wangnan0@...wei.com>
> Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
> Cc: David Ahern <dsahern@...il.com>
> Cc: Frederic Weisbecker <fweisbec@...il.com>
> Cc: Jiri Olsa <jolsa@...nel.org>
> Cc: Namhyung Kim <namhyung@...il.com>
> Cc: Paul Mackerras <paulus@...ba.org>
> Cc: Peter Zijlstra <peterz@...radead.org>
> Cc: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
> Cc: Tom Zanussi <tzanussi@...il.com>
> Signed-off-by: Jiri Olsa <jolsa@...nel.org>
> ---
>  tools/lib/traceevent/event-parse.c | 2 ++
>  tools/lib/traceevent/event-parse.h | 2 ++
>  2 files changed, 4 insertions(+)
> 
> diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
> index afe20ed9fac8..5ed1ad1461c7 100644
> --- a/tools/lib/traceevent/event-parse.c
> +++ b/tools/lib/traceevent/event-parse.c
> @@ -6237,6 +6237,8 @@ static void free_format_fields(struct format_field *field)
>  		free(field->type);
>  		free(field->name);
>  		free(field);
> +		if (field->destroy_priv)
> +			field->destroy_priv(field);
>  		field = next;
>  	}
>  }
> diff --git a/tools/lib/traceevent/event-parse.h b/tools/lib/traceevent/event-parse.h
> index 7a3873ff9a4f..928d801444ab 100644
> --- a/tools/lib/traceevent/event-parse.h
> +++ b/tools/lib/traceevent/event-parse.h
> @@ -190,6 +190,8 @@ struct format_field {
>  	unsigned int		arraylen;
>  	unsigned int		elementsize;
>  	unsigned long		flags;
> +	void			*priv;
> +	void 			(*destroy_priv)(struct format_field *);
>  };
>  
>  struct format {
> -- 
> 1.9.3
> 
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