vircgroup: extract virCgroupV1(Set|Get)CpuShares

Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>

src/util/vircgroup.c

@@ -2201,18 +2201,14 @@ virCgroupGetDomainTotalCpuStats(virCgroupPtr group,
 int
 virCgroupSetCpuShares(virCgroupPtr group, unsigned long long shares)
 {
-    return virCgroupSetValueU64(group,
+    VIR_CGROUP_BACKEND_CALL(group, setCpuShares, -1, shares);
-                                VIR_CGROUP_CONTROLLER_CPU,
-                                "cpu.shares", shares);
 }
 
 
 int
 virCgroupGetCpuShares(virCgroupPtr group, unsigned long long *shares)
 {
-    return virCgroupGetValueU64(group,
+    VIR_CGROUP_BACKEND_CALL(group, getCpuShares, -1, shares);
-                                VIR_CGROUP_CONTROLLER_CPU,
-                                "cpu.shares", shares);
 }
 
 

src/util/vircgroupbackend.h

@@ -276,6 +276,14 @@ typedef int
 typedef int
 (*virCgroupDenyAllDevicesCB)(virCgroupPtr group);
 
+typedef int
+(*virCgroupSetCpuSharesCB)(virCgroupPtr group,
+                           unsigned long long shares);
+
+typedef int
+(*virCgroupGetCpuSharesCB)(virCgroupPtr group,
+                           unsigned long long *shares);
+
 struct _virCgroupBackend {
     virCgroupBackendType type;
 
@@ -330,6 +338,9 @@ struct _virCgroupBackend {
     virCgroupDenyDeviceCB denyDevice;
     virCgroupAllowAllDevicesCB allowAllDevices;
     virCgroupDenyAllDevicesCB denyAllDevices;
+
+    virCgroupSetCpuSharesCB setCpuShares;
+    virCgroupGetCpuSharesCB getCpuShares;
 };
 typedef struct _virCgroupBackend virCgroupBackend;
 typedef virCgroupBackend *virCgroupBackendPtr;

src/util/vircgroupv1.c

@@ -1765,6 +1765,26 @@ virCgroupV1DenyAllDevices(virCgroupPtr group)
 }
 
 
+static int
+virCgroupV1SetCpuShares(virCgroupPtr group,
+                        unsigned long long shares)
+{
+    return virCgroupSetValueU64(group,
+                                VIR_CGROUP_CONTROLLER_CPU,
+                                "cpu.shares", shares);
+}
+
+
+static int
+virCgroupV1GetCpuShares(virCgroupPtr group,
+                        unsigned long long *shares)
+{
+    return virCgroupGetValueU64(group,
+                                VIR_CGROUP_CONTROLLER_CPU,
+                                "cpu.shares", shares);
+}
+
+
 virCgroupBackend virCgroupV1Backend = {
     .type = VIR_CGROUP_BACKEND_TYPE_V1,
 
@@ -1817,6 +1837,9 @@ virCgroupBackend virCgroupV1Backend = {
     .denyDevice = virCgroupV1DenyDevice,
     .allowAllDevices = virCgroupV1AllowAllDevices,
     .denyAllDevices = virCgroupV1DenyAllDevices,
+
+    .setCpuShares = virCgroupV1SetCpuShares,
+    .getCpuShares = virCgroupV1GetCpuShares,
 };