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Date: Mon, 23 Jul 2012 20:15:21 +0200
From: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
To: David Ahern <dsahern@gmail.com>
Cc: linux-kernel@vger.kernel.org, Ingo Molnar <mingo@kernel.org>,
        Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>,
        Frederic Weisbecker <fweisbec@gmail.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Robert Richter <robert.richter@amd.com>
Subject: Re: [PATCH 09/11] perf top: error handling for counter creation
 should parallel perf-record
Message-ID: <20120723181521.GD6717@infradead.org>
References: <1342826756-64663-1-git-send-email-dsahern@gmail.com>
 <1342826756-64663-10-git-send-email-dsahern@gmail.com>
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Em Fri, Jul 20, 2012 at 05:25:54PM -0600, David Ahern escreveu:
> diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
> index e3cab5f..0ce665c 100644
> --- a/tools/perf/builtin-top.c
> +++ b/tools/perf/builtin-top.c
> @@ -943,8 +943,10 @@ try_again:
>  			 * based cpu-clock-tick sw counter, which
>  			 * is always available even if no PMU support:
>  			 */
> -			if (attr->type == PERF_TYPE_HARDWARE &&
> -			    attr->config == PERF_COUNT_HW_CPU_CYCLES) {
> +			if ((err == ENOENT || err == ENXIO)
> +				&& attr->type == PERF_TYPE_HARDWARE
> +				&& attr->config == PERF_COUNT_HW_CPU_CYCLES) {
> +

usual style:

			if ((err == ENOENT || err == ENXIO) &&
			    attr->type == PERF_TYPE_HARDWARE &&
			    attr->config == PERF_COUNT_HW_CPU_CYCLES) {

- Arnaldo