taskThe GNU Hurd - Tasks: task #3182, Console and SMP


task #3182: Console and SMP

Submitted by:  Marcus Brinkmann <marcus>
Submitted on:  Tue 23 Mar 2004 09:37:43 PM UTC
Category:  Console Should Start On:  Tue 23 Mar 2004 12:00:00 AM UTC
Should be Finished on:  Tue 23 Mar 2004 12:00:00 AM UTC Priority:  * 1 - Later
Status:  None Privacy:  Public
Percent Complete:  0% Assigned to:  marcus
Open/Closed:  Open Planned Release:  None
Effort:  0.00
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Tue 23 Mar 2004 09:37:43 PM UTC, original submission:  

On SMP systems, we have to worry about consistency.  The server-client protocol of the console relies on shared memory and a specific order of the writes in the console server.

Memory barriers are probably needed to ensure that the counter of a record is updated after the data in the record.  Maybe after writing the counter, another memory barrier is needed, before notifying the clients.

Find out more about these issues and fix it.

Marcus Brinkmann <marcus>
Project Administrator


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