linux-kernel - Re: [PATCH 03/11] parse-events: Get rid of handling concatenation on event_read

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Date:	Mon, 23 Apr 2012 12:33:42 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Namhyung Kim <namhyung.kim@....com>
Cc:	Frederic Weisbecker <fweisbec@...il.com>,
	Namhyung Kim <namhyung@...il.com>,
	Ingo Molnar <mingo@...nel.org>,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Borislav Petkov <bp@...en8.de>,
	David Ahern <dsahern@...il.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 03/11] parse-events: Get rid of handling concatenation
 on event_read_print

On Mon, 2012-04-23 at 13:58 +0900, Namhyung Kim wrote:
> The concatenation of subsequent DQUOTE'd strings is handled
> by __read_token() already.
> 

You missed the point of this concat. It's not connecting "xxx" it is
connecting "xxx" "yyy" into "xxxyyy", as some events do this.

-- Steve

> Signed-off-by: Namhyung Kim <namhyung.kim@....com>
> ---
>  parse-events.c |   16 ----------------
>  1 file changed, 16 deletions(-)
> 
> diff --git a/parse-events.c b/parse-events.c
> index 0cd79c5..b4ae313 100644
> --- a/parse-events.c
> +++ b/parse-events.c
> @@ -2695,7 +2695,6 @@ static int event_read_print(struct event_format *event)
>  	if (read_expect_type(EVENT_DQUOTE, &token) < 0)
>  		goto fail;
>  
> - concat:
>  	event->print_fmt.format = token;
>  	event->print_fmt.args = NULL;
>  
> @@ -2705,21 +2704,6 @@ static int event_read_print(struct event_format *event)
>  	if (type == EVENT_NONE)
>  		return 0;
>  
> -	/* Handle concatenation of print lines */
> -	if (type == EVENT_DQUOTE) {
> -		char *cat;
> -
> -		cat = malloc_or_die(strlen(event->print_fmt.format) +
> -				    strlen(token) + 1);
> -		strcpy(cat, event->print_fmt.format);
> -		strcat(cat, token);
> -		free_token(token);
> -		free_token(event->print_fmt.format);
> -		event->print_fmt.format = NULL;
> -		token = cat;
> -		goto concat;
> -	}
> -			     
>  	if (test_type_token(type, token, EVENT_DELIM, ","))
>  		goto fail;
>  


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