virsh: Fix to list online cpus using virsh capabilities

Virsh capabilities will list offline cpus as online when
libvirt is compiled with numactl option disabled. This
fix will list correct set of online cpus.

src/nodeinfo.c

@@ -1641,26 +1641,36 @@ nodeCapsInitNUMAFake(virCapsPtr caps ATTRIBUTE_UNUSED)
     virCapsHostNUMACellCPUPtr cpus;
     int ncpus;
     int s, c, t;
-    int id;
+    int id, cid;
+    int onlinecpus ATTRIBUTE_UNUSED;
 
     if (nodeGetInfo(&nodeinfo) < 0)
         return -1;
 
     ncpus = VIR_NODEINFO_MAXCPUS(nodeinfo);
+    onlinecpus = nodeinfo.cpus;
 
     if (VIR_ALLOC_N(cpus, ncpus) < 0)
         return -1;
 
-    id = 0;
+    id = cid = 0;
     for (s = 0; s < nodeinfo.sockets; s++) {
         for (c = 0; c < nodeinfo.cores; c++) {
             for (t = 0; t < nodeinfo.threads; t++) {
-                cpus[id].id = id;
-                cpus[id].socket_id = s;
-                cpus[id].core_id = c;
-                if (!(cpus[id].siblings = virBitmapNew(ncpus)))
-                    goto error;
-                ignore_value(virBitmapSetBit(cpus[id].siblings, id));
+#ifdef __linux__
+                if (virNodeGetCpuValue(SYSFS_CPU_PATH, id, "online", 1)) {
+#endif
+                    cpus[cid].id = id;
+                    cpus[cid].socket_id = s;
+                    cpus[cid].core_id = c;
+                    if (!(cpus[cid].siblings = virBitmapNew(ncpus)))
+                        goto error;
+                    ignore_value(virBitmapSetBit(cpus[cid].siblings, id));
+                    cid++;
+#ifdef __linux__
+                }
+#endif
+
                 id++;
             }
         }
@@ -1668,7 +1678,11 @@ nodeCapsInitNUMAFake(virCapsPtr caps ATTRIBUTE_UNUSED)
 
     if (virCapabilitiesAddHostNUMACell(caps, 0,
                                        nodeinfo.memory,
+#ifdef __linux__
+                                       onlinecpus, cpus,
+#else
                                        ncpus, cpus,
+#endif
                                        0, NULL,
                                        0, NULL) < 0)
         goto error;