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Re: [Xen-devel] [PATCH 00/60] xen: add core scheduling support
- To: Sergey Dyasli <sergey.dyasli@xxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Juergen Gross <jgross@xxxxxxxx>
- Date: Wed, 24 Jul 2019 17:11:43 +0200
- Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Tim Deegan <tim@xxxxxxx>, RobertVanVossen <robert.vanvossen@xxxxxxxxxxxxxxx>, Dario Faggioli <dfaggioli@xxxxxxxx>, Julien Grall <julien.grall@xxxxxxx>, Josh Whitehead <josh.whitehead@xxxxxxxxxxxxxxx>, Meng Xu <mengxu@xxxxxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, Ian Jackson <ian.jackson@xxxxxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
- Delivery-date: Wed, 24 Jul 2019 15:11:50 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 24.07.19 16:54, Sergey Dyasli wrote:
On 24/07/2019 10:13, Juergen Gross wrote:
The fix is a one-liner. :-)
diff --git a/xen/common/schedule.c b/xen/common/schedule.c
index f0bc5b3161..da9efb147f 100644
--- a/xen/common/schedule.c
+++ b/xen/common/schedule.c
@@ -2207,6 +2207,7 @@ static struct sched_unit *sched_wait_rendezvous_in(struct
sched_unit *prev,
if ( unlikely(!scheduler_active) )
{
ASSERT(is_idle_unit(prev));
+ atomic_set(&prev->next_task->rendezvous_out_cnt, 0);
prev->rendezvous_in_cnt = 0;
}
}
Even with that applied, I'm still seeing it :(
Interesting, for me it was gone.
Time for more tests and some debug code...
Juergen
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