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From:   Namhyung Kim <namhyung@kernel.org>
Date:   Wed, 29 Nov 2023 17:49:49 -0800
Message-ID: <CAM9d7ci20GuVga9XBBOx_GXZsiPEFsqAvAYiz42Tgvc6ygSP9w@mail.gmail.com>
Subject: Re: [PATCH v5 06/50] tools lib api: Add io_dir an allocation free
 readdir alternative
To:     Ian Rogers <irogers@google.com>
Cc:     Peter Zijlstra <peterz@infradead.org>,
        Ingo Molnar <mingo@redhat.com>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
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        Changbin Du <changbin.du@huawei.com>,
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        Sandipan Das <sandipan.das@amd.com>,
        liuwenyu <liuwenyu7@huawei.com>, linux-kernel@vger.kernel.org,
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        Guilherme Amadio <amadio@gentoo.org>
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On Mon, Nov 27, 2023 at 2:09 PM Ian Rogers <irogers@google.com> wrote:
>
> glibc's opendir allocates a minimum of 32kb, when called recursively
> for a directory tree the memory consumption can add up - nearly 300kb
> during perf start-up when processing modules. Add a stack allocated
> variant of readdir sized a little more than 1kb.
>
> Signed-off-by: Ian Rogers <irogers@google.com>

Acked-by: Namhyung Kim <namhyung@kernel.org>

Thanks,
Namhyung