linux-kernel - Re: [PATCH] tools lib traceevent: Handle alloc

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Date:	Wed, 19 Sep 2012 13:42:58 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	David Ahern <dsahern@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Jiri Olsa <jolsa@...hat.com>,
	Stephane Eranian <eranian@...gle.com>,
	Mike Galbraith <efault@....de>,
	Namhyung Kim <namhyung.kim@....com>
Subject: Re: [PATCH] tools lib traceevent: Handle alloc_arg failure


* Namhyung Kim <namhyung@...nel.org> wrote:

> +		if (!left) {
> +			do_warning("%s(%d): not enough memory!", __func__, __LINE__);
> +			goto out_free;

> +		if (!right) {
> +			do_warning("%s(%d): not enough memory!", __func__, __LINE__);
> +			goto out_free;
> +		}

> +		if (!left) {
> +			do_warning("%s(%d): not enough memory!", __func__, __LINE__);
> +			goto out_free;
> +		}

> +		if (!left) {
> +			do_warning("%s(%d): not enough memory!", __func__, __LINE__);
> +			goto out_free;
> +		}

> +		if (!right) {
> +			do_warning("%s(%d): not enough memory!", __func__, __LINE__);
> +			goto out_free;
> +		}

> +		if (!left) {
> +			do_warning("%s(%d): not enough memory!", __func__, __LINE__);
> +			goto out_free;
> +		}

These repetitive patterns are seriously uglifying the code and 
are crying out loud for a out_war_free label:

		if (!left)
			goto out_warn_free;

(The function here seems to be rather large as well, making it a 
possible candidate for shrinkage/splitup.)

Thanks,

	Ingo
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