From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: minyard@acm.org
Cc: Linux Kernel <linux-kernel@vger.kernel.org>,
linux-serial@vger.kernel.org
Subject: Re: [PATCH] Provide better abstraction for the serial drivers to xmit buf and tty
Date: Wed, 18 Apr 2007 10:20:27 +0100 [thread overview]
Message-ID: <20070418102027.0e1edb2b@the-village.bc.nu> (raw)
In-Reply-To: <20070418045423.GA12136@localdomain>
> The basic reason for all this is to eventually allow the low-level
> serial drivers to function without a uart_info structure being
> allocated. This will allow the serial console, debuggers like kgdb,
> and the IPMI serial driver to use one interface to the uart code and
Its cheaper to allocate a uart_info that keep doing all the checks, at
least for port->info. I can see why you want to avoid port->info->tty as
a debugger can end up running before the tty layer and that would be hard
to work around.
For the other macros - the macros are more efficient than the equivalent
inline code generation at least for some gccs.
Do you really need any of this change but to check info->tty ?
Alan
next prev parent reply other threads:[~2007-04-18 9:17 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-18 4:54 [PATCH] Provide better abstraction for the serial drivers to xmit buf and tty Corey Minyard
2007-04-18 9:20 ` Alan Cox [this message]
2007-04-18 16:15 ` Corey Minyard
2007-04-18 19:12 ` Alan Cox
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