linux-kernel - Re: [PATCH 03/27] perf tools: Add reference counting for cpu

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Date:	Tue, 23 Jun 2015 18:06:45 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Jiri Olsa <jolsa@...nel.org>
Cc:	lkml <linux-kernel@...r.kernel.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Andi Kleen <ak@...ux.intel.com>,
	David Ahern <dsahern@...il.com>,
	Ingo Molnar <mingo@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH 03/27] perf tools: Add reference counting for cpu_map
 object

Em Tue, Jun 23, 2015 at 12:36:04AM +0200, Jiri Olsa escreveu:
> -void cpu_map__delete(struct cpu_map *map)
> +static void cpu_map__delete(struct cpu_map *map)
>  {
> -	free(map);
> +	if (map) {
> +		WARN_ONCE(atomic_read(&map->refcnt) != 0,
> +			  "cpu map refcnt disbalanced\n");

Have you used this to catch some bug or is this just some attempt at a
proactive check? s/disbalanced/unbalanced/g

- Arnaldo
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