linux-kernel - Re: [PATCH 3/4] printk: Add consoles to a virtual "console" bus

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Message-ID: <20190312204345.GA5982@Haydn>
Date:   Tue, 12 Mar 2019 20:44:05 +0000
From:   Calvin Owens <calvinowens@...com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:     Petr Mladek <pmladek@...e.com>,
        John Ogness <john.ogness@...utronix.de>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Jonathan Corbet <corbet@....net>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-serial@...r.kernel.org" <linux-serial@...r.kernel.org>
Subject: Re: [PATCH 3/4] printk: Add consoles to a virtual "console" bus

On Friday 03/08 at 17:34 +0100, Greg Kroah-Hartman wrote:
> On Fri, Mar 08, 2019 at 04:58:14PM +0100, Petr Mladek wrote:
> > On Fri 2019-03-08 03:56:19, John Ogness wrote:
> > > On 2019-03-02, Calvin Owens <calvinowens@...com> wrote:
> > > > This patch embeds a device struct in the console struct, and registers
> > > > them on a "console" bus so we can expose attributes in sysfs.
> > > 
> > > I expect that "class" would be more appropriate than "bus". These
> > > devices really are grouped together based on their function and not the
> > > medium by which they are accessed.
> > 
> > Good point. "class" looks better to me as well.
> > 
> > Greg, any opinion, where to put the entries for struct console ?
> 
> Hang them off of the device that the console belongs to?
> 
> Classes and busses are almost identical except:
> 	- busses is the binding of a driver to a device (usb, pci, etc.)
> 	- classes are usually userspace interactions to a device (input,
> 	  tty, etc.)
> 
> So this sounds like a class to me.

Sounds good, will make it a class.
 
> If you want me to review this, I'll be glad to so do once 5.1-rc1 is
> out...

Yeah, I realized after sending this the timing was pretty terrible, I'll
wait for 5.1-rc1 before rebasing/resending.

Thanks,
Calvin
 
> thanks,
> 
> greg k-h