On Wed, 21 Mar 2001, Keith Owens wrote:
> I misread the code, but the idea is still correct. Add a preemption
> depth counter to each cpu, when you schedule and the depth is zero then
> you know that the cpu is no longer holding any references to quiesced
> structures.
A task that has been preempted is on the run queue and can be
rescheduled on a different CPU, so I can't see how a per-CPU counter
would work. It seems to me that you would need a per run queue
counter, like the example I gave in a previous posting.
Nigel Gamble nigel@nrg.org
Mountain View, CA, USA. http://www.nrg.org/
MontaVista Software nigel@mvista.com
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This archive was generated by hypermail 2b29 : Fri Mar 23 2001 - 21:00:15 EST