Messages in this thread | | | Date | Tue, 17 Jun 2003 00:34:49 +0100 (BST) | From | James Simmons <> | Subject | Re: Linux 2.5.71 - random console corruption |
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> 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.
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