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Re: [Xen-devel] Sched_op hypercall small questions
| To: | Daniel Castro <evil.dani@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] Sched_op hypercall small questions |
| From: | Keir Fraser <keir.xen@xxxxxxxxx> |
| Date: | Mon, 19 Sep 2011 22:41:00 -0700 |
| Cc: | |
| Delivery-date: | Mon, 19 Sep 2011 22:42:08 -0700 |
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| Thread-topic: | [Xen-devel] Sched_op hypercall small questions |
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On 19/09/2011 22:21, "Daniel Castro" <evil.dani@xxxxxxxxx> wrote: > Greetings all. > > Some small question regarding schedule poll operation hypercall. > > 1. struct sched_poll poll.timeout is measured in what unit of time? > Secs, ms? ns? It is an absolute system time (rather than a duration), in nanoseconds. > 2. After issuing the hypercall_sched_op(SCHEDOP_poll, &poll); if no > timeout is used in poll struct how long will I yield the CPU? Until one of the specified event channel ports is pending. > 3. If I issue the hypercall and the event never comes is it possible > to to yield the CPU for ever? Yes, if you do not specify a timeout. -- Keir > Thanks you very much for answering these questions. > > Daniel Castro _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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