On 14/04/2010 07:58, "Juergen Gross" <juergen.gross@xxxxxxxxxxxxxx> wrote:
>> The per-cpu area method should work fine, since Xen is non-preemptive? I
>> don't think the concurrency you are concerned about can happen.
>
> The tasklet knows only on which cpu it is running, so the data has to be
> stored on the target cpu. And one pcpu can be the target of concurrent calls
> from different calling cpus...
A tasklet also takes an arbitrary ulong parameter, which you can cast to a
pointer to your informational structure. The parameter is specified via
tasklet_init(). That should suffice.
 -- Keir
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