On 09/11/2007, Srivatsa Vaddagiri <[email protected]> wrote:
> [ ... ]
>
> As a solution to this problem, I moved sched_fork() call, which
> initializes scheduler related fields on a new task, before
> copy_namespaces(). I am not sure though whether moving up will
> cause other side-effects. Do you see any issue?
Should be ok (IMHO and at first glance :-)
> - The second problem exposed by this test is that task_new_fair()
> assumes that parent and child will be part of the same group (which
> needn't be as this test shows). As a result, cfs_rq->curr can be NULL
> for the child.
Would it be better, logically-wise, to use is_same_group() instead?
Although, we can't have 2 groups with cfs_rq->curr != NULL on the same
CPU... so if the child belongs to another group, it's cfs_rq->curr is
automatically NULL indeed.
--
Best regards,
Dmitry Adamushko
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