Re: [PATCH] USB: serial: add port statistics

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On Wed, Sep 18, 2019 at 11:14:15AM +0200, yegorslists@xxxxxxxxxxxxxx wrote:
> From: Yegor Yefremov <yegorslists@xxxxxxxxxxxxxx>
> 
> Add additional port statistics like received and transmitted bytes
> the way /proc/tty/driver/serial does.
> 
> As usbserial driver already provides USB related information and
> this line is longer than 100 characters, this patch adds an
> additional line with the same port number:
> 
> 0: module:ftdi_sio name:"FTDI USB Serial Device" vendor:0403 ...
> 0: tx:112 rx:0
> 
> Signed-off-by: Yegor Yefremov <yegorslists@xxxxxxxxxxxxxx>
> ---
>  drivers/usb/serial/usb-serial.c | 22 ++++++++++++++++++++++
>  1 file changed, 22 insertions(+)

You can't change existing proc files without having the chance that
userspace tools will break.

Have you tried this and seen what dies a horrible death?

thanks,

greg k-h



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