netdev - Re: [PATCH net-next v2 01/10] net: dsa: add debugfs interface

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Message-ID: <20170828195039.GA1950@nanopsycho.orion>
Date:   Mon, 28 Aug 2017 21:50:39 +0200
From:   Jiri Pirko <jiri@...nulli.us>
To:     Vivien Didelot <vivien.didelot@...oirfairelinux.com>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel@...oirfairelinux.com,
        "David S. Miller" <davem@...emloft.net>,
        Florian Fainelli <f.fainelli@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Egil Hjelmeland <privat@...l-hjelmeland.no>,
        John Crispin <john@...ozen.org>,
        Woojung Huh <Woojung.Huh@...rochip.com>,
        Sean Wang <sean.wang@...iatek.com>,
        Nikita Yushchenko <nikita.yoush@...entembedded.com>,
        Chris Healy <cphealy@...il.com>
Subject: Re: [PATCH net-next v2 01/10] net: dsa: add debugfs interface

Mon, Aug 28, 2017 at 09:17:39PM CEST, vivien.didelot@...oirfairelinux.com wrote:
>This commit adds a DEBUG_FS dependent DSA core file creating a generic
>debug filesystem interface for the DSA switch devices.
>
>The interface can be mounted with:
>
>    # mount -t debugfs none /sys/kernel/debug
>
>The dsa directory contains one directory per switch chip:
>
>    # cd /sys/kernel/debug/dsa/
>    # ls
>    switch0  switch1 switch2
>
>Each chip directory contains one directory per port:
>
>    # ls -l switch0/
>    drwxr-xr-x 2 root root 0 Jan  1 00:00 port0
>    drwxr-xr-x 2 root root 0 Jan  1 00:00 port1
>    drwxr-xr-x 2 root root 0 Jan  1 00:00 port2
>    drwxr-xr-x 2 root root 0 Jan  1 00:00 port5
>    drwxr-xr-x 2 root root 0 Jan  1 00:00 port6
>
>Future patches will add entry files to these directories.
>
>Signed-off-by: Vivien Didelot <vivien.didelot@...oirfairelinux.com>

Oh no, no debugfs please!

What do you need to expose? I'm sure we can find out some generic, well
defined and reusable way.