linux-kernel - Re: [PATCH v4 02/48] perf stat: Add aggr creators that are passed a cpu.

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Message-ID: <9ee9f3ca-bfeb-7258-f7dd-2485c26ef372@huawei.com>
Date:   Mon, 10 Jan 2022 19:17:52 +0000
From:   John Garry <john.garry@...wei.com>
To:     Ian Rogers <irogers@...gle.com>, Andi Kleen <ak@...ux.intel.com>,
        "Jiri Olsa" <jolsa@...hat.com>, Namhyung Kim <namhyung@...nel.org>,
        Kajol Jain <kjain@...ux.ibm.com>,
        "Paul A . Clarke" <pc@...ibm.com>,
        "Arnaldo Carvalho de Melo" <acme@...nel.org>,
        Riccardo Mancini <rickyman7@...il.com>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Peter Zijlstra <peterz@...radead.org>,
        "Ingo Molnar" <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        "Alexander Shishkin" <alexander.shishkin@...ux.intel.com>,
        <linux-perf-users@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        "Vineet Singh" <vineet.singh@...el.com>,
        James Clark <james.clark@....com>,
        "Mathieu Poirier" <mathieu.poirier@...aro.org>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Mike Leach <mike.leach@...aro.org>,
        Leo Yan <leo.yan@...aro.org>, <coresight@...ts.linaro.org>,
        <linux-arm-kernel@...ts.infradead.org>, <zhengjun.xing@...el.com>
CC:     <eranian@...gle.com>
Subject: Re: [PATCH v4 02/48] perf stat: Add aggr creators that are passed a
 cpu.

On 05/01/2022 06:13, Ian Rogers wrote:
> +struct aggr_cpu_id cpu_map__get_socket(struct perf_cpu_map *map, int idx,
> +				       void *data)
> +{
> +	if (idx < 0 || idx > map->nr)

Incidentally should this be >= map->nr?

> +		return cpu_map__empty_aggr_cpu_id();
> +
> +	return cpu_map__get_socket_aggr_by_cpu(map->map[idx], data);
> +}
> +