linux-kernel - Re: Lock problems in linux/tools/perf/util/dso.c

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Message-ID: <CAM9d7cgzpyp03y3w009upnftK=24r8NtQFZB0t23pnc1PwyJug@mail.gmail.com>
Date:   Tue, 4 Jan 2022 11:33:38 -0800
From:   Namhyung Kim <namhyung@...nel.org>
To:     Ryan Cai <ycaibb@...il.com>
Cc:     Adrian Hunter <adrian.hunter@...el.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: Lock problems in linux/tools/perf/util/dso.c

On Wed, Dec 29, 2021 at 6:42 PM Ryan Cai <ycaibb@...il.com> wrote:
>
> Hi, Namhyung,
>
> 1. Indeed, I got wrong here.
> 2. Yes, the branch should be if (pthread_mutex_lock(&dso__data_open_lock))
> instead of if (pthread_mutex_lock(&dso__data_open_lock) < 0).
>
> Could I send a patch?

Sure!

Thanks,
Namhyung