[PATCH RFC v1 1/3] xen:rtds: enable XL to set and get vcpu work conserving flag

[Meng Xu <mengxu@cis.upenn.edu>]

Extend the hypercalls(XEN_DOMCTL_SCHEDOP_getvcpuinfo/putvcpuinfo) to
get/set a domain's per-VCPU work conserving parameters.

Signed-off-by: Meng Xu <mengxu@cis.upenn.edu>
---
 xen/common/sched_rt.c       | 2 ++
 xen/include/public/domctl.h | 1 +
 2 files changed, 3 insertions(+)

diff --git a/xen/common/sched_rt.c b/xen/common/sched_rt.c
index 740a712..76ed4cb 100644
--- a/xen/common/sched_rt.c
+++ b/xen/common/sched_rt.c
@@ -1442,6 +1442,7 @@ rt_dom_cntl(
                 svc = rt_vcpu(d->vcpu[local_sched.vcpuid]);
                 local_sched.u.rtds.budget = svc->budget / MICROSECS(1);
                 local_sched.u.rtds.period = svc->period / MICROSECS(1);
+                local_sched.u.rtds.is_work_conserving = svc->is_work_conserving;
                 spin_unlock_irqrestore(&prv->lock, flags);
 
                 if ( copy_to_guest_offset(op->u.v.vcpus, index,
@@ -1466,6 +1467,7 @@ rt_dom_cntl(
                 svc = rt_vcpu(d->vcpu[local_sched.vcpuid]);
                 svc->period = period;
                 svc->budget = budget;
+                svc->is_work_conserving = local_sched.u.rtds.is_work_conserving;
                 spin_unlock_irqrestore(&prv->lock, flags);
             }
             /* Process a most 64 vCPUs without checking for preemptions. */
diff --git a/xen/include/public/domctl.h b/xen/include/public/domctl.h
index ff39762..e67cd9e 100644
--- a/xen/include/public/domctl.h
+++ b/xen/include/public/domctl.h
@@ -360,6 +360,7 @@ typedef struct xen_domctl_sched_credit2 {
 typedef struct xen_domctl_sched_rtds {
     uint32_t period;
     uint32_t budget;
+    bool     is_work_conserving;
 } xen_domctl_sched_rtds_t;
 
 typedef struct xen_domctl_schedparam_vcpu {
-- 
1.9.1


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