linux-kernel - Re: [PATCH v4 1/2] perf pmu: Add PMU alias support

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Message-ID: <1d9d2f4e-ed7e-e770-066d-ef53ec31b42d@linux.intel.com>
Date:   Wed, 11 Aug 2021 06:27:37 -0700
From:   Andi Kleen <ak@...ux.intel.com>
To:     Jin Yao <yao.jin@...ux.intel.com>, acme@...nel.org,
        jolsa@...nel.org, peterz@...radead.org, mingo@...hat.com,
        alexander.shishkin@...ux.intel.com
Cc:     Linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        kan.liang@...el.com, yao.jin@...el.com, rickyman7@...il.com,
        Kan Liang <kan.liang@...ux.intel.com>
Subject: Re: [PATCH v4 1/2] perf pmu: Add PMU alias support


> +
> +	dir = opendir(path);
> +	if (!dir)
> +		return -1;


Could we cache/check the opendir result through file_available too?


The rest looks good


Reviewed-by: Andi Kleen <ak@...ux.intel.com>

-Andi