Re: Linux 2.5.71 - random console corruption

From: James Simmons (jsimmons@infradead.org)
Date: Mon Jun 16 2003 - 18:34:49 EST


> On Mon, 2003-06-16 at 14:27, James Simmons wrote:
>
> > Preempt and the VT console system are not friends. There are way to many
> > global variables which have there states altered in many spots.
>
> So why is this not an SMP race, too?

For userland<->kernel transactions we have the console_semaphore to
protect us. It is also used for console_callback. The console_semaphore is
not used internally to protect global variables :-( To do this properly
would take quite a bit of work.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/



This archive was generated by hypermail 2b29 : Mon Jun 23 2003 - 22:00:19 EST