On 06/06/07, Srivatsa Vaddagiri <[email protected]> wrote:
On Wed, Jun 06, 2007 at 09:01:43AM +0200, Ingo Molnar wrote:
> [...] and my tree already contains the fixes for rt task's
> exec_start.
Can I have this snapshot pls? I have to deal with the same issue when
the current task switches groups and I was planning to fix it by
introducing a set_curr_task() method in fair_sched_class which
initializes exec_start and other fields for that task.
Hum.. what about accounting 'exec_time' and updating 'exec_start' in
rt_sched :: dequeue_task_rt() instead (like update_curr() does it in
dequeue_task_fair())?
This way, on RT -> NORMAL transition.. some 'delta_exec' ( between
deactivate_task() ---> activate_task() ) will be accounted later as if
the task was 'sched_fair_class' during this time.. which I think makes
some sense. What do you think?
sched_setscheduler()
{
...
on_rq = p->on_rq;
if (on_rq)
deactivate_task(rq, p, 0);
oldprio = p->prio;
__setscheduler(rq, p, policy, param->sched_priority);
if (on_rq) {
activate_task(rq, p, 0);
...
--
Regards,
vatsa
--
Best regards,
Dmitry Adamushko
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