[Libvirt-cim] [PATCH] (#2) Add dynamic VCPU adjustments

[Dan Smith]

# HG changeset patch
# User Dan Smith <danms at us.ibm.com>
# Date 1201101678 28800
# Node ID 8a5a12f5003b1e564fe21f29001a2843139614c3
# Parent  47438edf32be70e65bdb814ab609a70304fad2f4
(#2) Add dynamic VCPU adjustments

Changes:
- Removed stupidity from last patch

Signed-off-by: Dan Smith <danms at us.ibm.com>

diff -r 47438edf32be -r 8a5a12f5003b libxkutil/device_parsing.c
--- a/libxkutil/device_parsing.c	Tue Jan 22 10:55:59 2008 -0800
+++ b/libxkutil/device_parsing.c	Wed Jan 23 07:21:18 2008 -0800
@@ -897,11 +897,40 @@ static int change_memory(virDomainPtr do
         return 1;
 }
 
+static int change_vcpus(virDomainPtr dom, int delta)
+{
+        int ret;
+        virDomainInfo info;
+
+        ret = virDomainGetInfo(dom, &info);
+        if (ret == -1) {
+                CU_DEBUG("Failed to get domain info for %s",
+                         virDomainGetName(dom));
+                return 0;
+        }
+
+        ret = virDomainSetVcpus(dom, info.nrVirtCpu + delta);
+        if (ret == -1) {
+                CU_DEBUG("Failed to set domain vcpus to %i",
+                         info.nrVirtCpu + delta);
+                return 0;
+        }
+
+        CU_DEBUG("Changed %s vcpus from %i to %i",
+                 virDomainGetName(dom),
+                 info.nrVirtCpu,
+                 info.nrVirtCpu + delta);
+
+        return 1;
+}
+
 int attach_device(virDomainPtr dom, struct virt_device *dev)
 {
         if ((dev->type == VIRT_DEV_NET) ||
             (dev->type == VIRT_DEV_DISK))
                 return _change_device(dom, dev, true);
+        else if (dev->type == VIRT_DEV_VCPU)
+                return change_vcpus(dom, 1);
 
         CU_DEBUG("Unhandled device type %i", dev->type);
 
@@ -913,6 +942,8 @@ int detach_device(virDomainPtr dom, stru
         if ((dev->type == VIRT_DEV_NET) ||
             (dev->type == VIRT_DEV_DISK))
                 return _change_device(dom, dev, false);
+        else if (dev->type == VIRT_DEV_VCPU)
+                return change_vcpus(dom, -1);
 
         CU_DEBUG("Unhandled device type %i", dev->type);