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Re: [Xen-devel] [PATCH] Avoid endless loop for vcpu migration
| To: | Juergen Gross <juergen.gross@xxxxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH] Avoid endless loop for vcpu migration |
| From: | Keir Fraser <keir.xen@xxxxxxxxx> |
| Date: | Mon, 14 Mar 2011 15:06:21 +0000 |
| Cc: | George Dunlap <George.Dunlap@xxxxxxxxxxxxx> |
| Delivery-date: | Mon, 14 Mar 2011 08:08:00 -0700 |
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| Thread-topic: | [Xen-devel] [PATCH] Avoid endless loop for vcpu migration |
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I'm not versed enough in this aspect of the scheduler to ack or commit this. It just looks a bit ugly and confusing to me. Needs an Ack from George therefore. -- Keir On 14/03/2011 14:39, "Juergen Gross" <juergen.gross@xxxxxxxxxxxxxx> wrote: > On multi-thread multi-core systems an endless loop can occur in vcpu_migrate() > with credit scheduler. Avoid this loop by changing the interface of pick_cpu > to indicate a repeated call in this case. > > Signed-off-by: juergen.gross@xxxxxxxxxxxxxx > > > 6 files changed, 11 insertions(+), 15 deletions(-) > xen/common/sched_arinc653.c | 2 +- > xen/common/sched_credit.c | 12 +++--------- > xen/common/sched_credit2.c | 2 +- > xen/common/sched_sedf.c | 2 +- > xen/common/schedule.c | 6 ++++-- > xen/include/xen/sched-if.h | 2 +- > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@xxxxxxxxxxxxxxxxxxx > http://lists.xensource.com/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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