Re: PATCH: Export console functions for use by Software Suspend nice display

From: Nigel Cunningham (ncunningham_at_users.sourceforge.net)
Date: 01/23/04

  • Next message: Benjamin Herrenschmidt: "Re: PATCH: Export console functions for use by Software Suspend nice display" 
    Date:	Fri, 23 Jan 2004 16:07:10 +1300
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>

    Hi.

    On Fri, 2004-01-23 at 15:49, Benjamin Herrenschmidt wrote:
    > Also, by using write instead of blasting the low level code,
    > you will not have to worry about locking issues. (The way
    > you tap the low level stuff should require at least the console
    > semaphore held, write to /dev/console don't)
    >
    > Ben

    Locking is not an issue. This is suspend-to-disk. Everything else is
    stopped while we're working.

    By the way, am I understanding the suggestion correctly? Do you
    (collective) mean getting a fd for /dev/console from within kernel code
    and using that? I've been looking at the way printk works and wondering
    if con->write is equivalent (once I find the right console to write to)?

    Regards,

    Nigel 

    -- 
My work on Software Suspend is graciously brought to you by
LinuxFund.org.

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  • Next message: Benjamin Herrenschmidt: "Re: PATCH: Export console functions for use by Software Suspend nice display"

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