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Date:   Wed, 6 Jan 2021 10:33:43 +0900
From:   Namhyung Kim <>
To:     Arnaldo Carvalho de Melo <>
Cc:     Jiri Olsa <>, Ingo Molnar <>,
        Peter Zijlstra <>,
        Mark Rutland <>,
        Alexander Shishkin <>,
        LKML <>,
        Stephane Eranian <>,
        Ian Rogers <>,
        Andi Kleen <>
Subject: Re: [PATCH 3/3] tools/lib/fs: Cache cgroupfs mount point

Hi Arnaldo,

On Tue, Dec 29, 2020 at 8:51 PM Arnaldo Carvalho de Melo
<> wrote:
> Em Wed, Dec 16, 2020 at 06:05:56PM +0900, Namhyung Kim escreveu:
> > Currently it parses the /proc file everytime it opens a file in the
> > cgroupfs.  Save the last result to avoid it (assuming it won't be
> > changed between the accesses).
> Which is the most likely case, but can't we use something like inotify
> to detect that and bail out or warn the user?

Hmm.. looks doable.  Will check.


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