vircgroup: add virCgroupGetCpuPeriodQuota()

Another vircgroup helper to avoid code repetition between
the LXC and QEMU driver.
Signed-off-by: NDaniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: NJán Tomko <jtomko@redhat.com>
Reviewed-by: NJán Tomko <jtomko@redhat.com>

src/libvirt_private.syms

@@ -1693,6 +1693,7 @@ virCgroupGetCpuacctStat;
 virCgroupGetCpuacctUsage;
 virCgroupGetCpuCfsPeriod;
 virCgroupGetCpuCfsQuota;
+virCgroupGetCpuPeriodQuota;
 virCgroupGetCpusetCpus;
 virCgroupGetCpusetMemoryMigrate;
 virCgroupGetCpusetMems;

src/lxc/lxc_driver.c

@@ -1783,13 +1783,7 @@ static int
 lxcGetVcpuBWLive(virCgroupPtr cgroup, unsigned long long *period,
                  long long *quota)
 {
-    if (virCgroupGetCpuCfsPeriod(cgroup, period) < 0)
-        return -1;
-
-    if (virCgroupGetCpuCfsQuota(cgroup, quota) < 0)
-        return -1;
-
-    return 0;
+    return virCgroupGetCpuPeriodQuota(cgroup, period, quota);
 }
 
 

src/qemu/qemu_driver.c

@@ -10532,13 +10532,7 @@ static int
 qemuGetVcpuBWLive(virCgroupPtr cgroup, unsigned long long *period,
                   long long *quota)
 {
-    if (virCgroupGetCpuCfsPeriod(cgroup, period) < 0)
-        return -1;
-
-    if (virCgroupGetCpuCfsQuota(cgroup, quota) < 0)
-        return -1;
-
-    return 0;
+    return virCgroupGetCpuPeriodQuota(cgroup, period, quota);
 }
 
 static int

src/util/vircgroup.c

@@ -3739,3 +3739,17 @@ virCgroupSetupCpuPeriodQuota(virCgroupPtr cgroup,
 
     return -1;
 }
+
+
+int
+virCgroupGetCpuPeriodQuota(virCgroupPtr cgroup, unsigned long long *period,
+                           long long *quota)
+{
+    if (virCgroupGetCpuCfsPeriod(cgroup, period) < 0)
+        return -1;
+
+    if (virCgroupGetCpuCfsQuota(cgroup, quota) < 0)
+        return -1;
+
+    return 0;
+}

src/util/vircgroup.h

@@ -227,6 +227,8 @@ int virCgroupSetupCpuShares(virCgroupPtr cgroup, unsigned long long shares,
 
 int virCgroupSetCpuCfsPeriod(virCgroupPtr group, unsigned long long cfs_period);
 int virCgroupGetCpuCfsPeriod(virCgroupPtr group, unsigned long long *cfs_period);
+int virCgroupGetCpuPeriodQuota(virCgroupPtr cgroup, unsigned long long *period,
+                               long long *quota);
 int virCgroupSetupCpuPeriodQuota(virCgroupPtr cgroup, unsigned long long period,
                                  long long quota);