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SubjectRe: [BUG] CFS vs cpu hotplug
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On Thu, 2008-06-19 at 20:05 +0200, Peter Zijlstra wrote:
> On Thu, 2008-06-19 at 18:19 +0200, Heiko Carstens wrote:

> > The sched_entity that belongs to the cfs_rq:
> >
> > >> px *(sched_entity *) 0x759300
> > struct sched_entity {
> > load = struct load_weight {
> > weight = 0x800
> > inv_weight = 0x1ffc01
> > }
> > run_node = struct rb_node {
> > rb_parent_color = 0x1
> > rb_right = (nil)
> > rb_left = (nil)
> > }
> > group_node = struct list_head {
> > next = 0x75a3b8
> > prev = 0x75a3b8
> > }
> > on_rq = 0x1
> > exec_start = 0x189685acb4aa46
> > sum_exec_runtime = 0x188a2b84c
> > vruntime = 0xd036bd29
> > prev_sum_exec_runtime = 0x1672e3f62
> > last_wakeup = 0x0
> > avg_overlap = 0x0
> > parent = (nil)
> > cfs_rq = 0x75a380
> > my_q = 0x759400
> > }

Ooh, this thing is with CONFIG_GROUP_SCHED... does it still happen when
you disable that?

Not that that is any excuse for crashing.. but it does simplify the
scheduler somewhat.



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