context-switch on IA64

From: <Julien.Soula_at_lifl.fr>
Date: 2004-03-31 20:03:08
hello,

there is something I can't understand in scheduler of 2.6.3 (with
preemption) on IA64.

I made a test on the "prev" task just before the "context_switch" (in
fact, just before the "prepare_switch_arch") to know if a specific
task was still on the runqueue :

	BUG_ON( (prev == mytask) && prev->array )

and I made the same test just after the "context_switch" (before the
"finisk_task"). Eventually, the 2nd BUG_ON is triggered but not the
1st one.

So the question is : how the task has been re-activated during a
context_switch ?

Sincerly, 
-- 
Julien


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Received on Wed Mar 31 05:03:33 2004

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