On Tue, 13 Feb 2007, Davide Libenzi wrote:
[...]
> So the sys_async_exec task is going to block. Now, am I being really
> tired, or the cachemiss fast return is simply not there?
The former 8)
pick_new_async_head()
new_task->ah = ah;
cachemiss_loop()
for (;;) {
if (unlikely(t->ah || ...))
break;
> There's another problem AFAICS:
>
> - We woke up one of the cachemiss_loop threads in pick_new_async_thread
>
> - The threads wakes up, mark itself as busy, and look at the ->work
> pointer hoping to find something to work on
>
> But we never set that pointer to a userspace atom AFAICS. Me blind? :)
I still don't see at->work ever set to a valid userspace atom though...
- Davide
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