Add global period definitions

This parameter represents top level period cgroup
that limits whole domain enforcement period for a quota
Signed-off-by: NAlexander Burluka <aburluka@virtuozzo.com>

docs/schemas/domaincommon.rng

@@ -669,6 +669,11 @@
             <ref name="cpushares"/>
           </element>
         </optional>
+        <optional>
+          <element name="global_period">
+            <ref name="cpuperiod"/>
+          </element>
+        </optional>
         <optional>
           <element name="period">
             <ref name="cpuperiod"/>

include/libvirt/libvirt-domain.h

@@ -311,6 +311,14 @@ typedef enum {
  */
 # define VIR_DOMAIN_SCHEDULER_CPU_SHARES "cpu_shares"
 
+/**
+ * VIR_DOMAIN_SCHEDULER_GLOBAL_PERIOD:
+ *
+ * Macro represents the enforcement period for a quota, in microseconds,
+ * for whole domain, when using the posix scheduler, as a ullong.
+ */
+# define VIR_DOMAIN_SCHEDULER_GLOBAL_PERIOD "global_period"
+
 /**
  * VIR_DOMAIN_SCHEDULER_VCPU_PERIOD:
  *
@@ -3338,6 +3346,14 @@ typedef void (*virConnectDomainEventMigrationIterationCallback)(virConnectPtr co
  */
 # define VIR_DOMAIN_TUNABLE_CPU_CPU_SHARES "cputune.cpu_shares"
 
+/**
+ * VIR_DOMAIN_TUNABLE_CPU_GLOBAL_PERIOD:
+ *
+ * Macro represents the enforcement period for a quota, in microseconds,
+ * for whole domain, when using the posix scheduler, as VIR_TYPED_PARAM_ULLONG.
+ */
+# define VIR_DOMAIN_TUNABLE_CPU_GLOBAL_PERIOD "cputune.global_period"
+
 /**
  * VIR_DOMAIN_TUNABLE_CPU_VCPU_PERIOD:
  *

src/conf/domain_conf.c

@@ -15140,6 +15140,21 @@ virDomainDefParseXML(xmlDocPtr xml,
         goto error;
     }
 
+    if (virXPathULongLong("string(./cputune/global_period[1])", ctxt,
+                          &def->cputune.global_period) < -1) {
+        virReportError(VIR_ERR_XML_ERROR, "%s",
+                       _("can't parse cputune global period value"));
+        goto error;
+    }
+
+    if (def->cputune.global_period > 0 &&
+        (def->cputune.global_period < 1000 || def->cputune.global_period > 1000000)) {
+        virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+                       _("Value of cputune global period must be in range "
+                         "[1000, 1000000]"));
+        goto error;
+    }
+
     if (virXPathULongLong("string(./cputune/emulator_period[1])", ctxt,
                           &def->cputune.emulator_period) < -1) {
         virReportError(VIR_ERR_XML_ERROR, "%s",
@@ -21655,6 +21670,9 @@ virDomainCputuneDefFormat(virBufferPtr buf,
     if (def->cputune.quota)
         virBufferAsprintf(&childrenBuf, "<quota>%lld</quota>\n",
                           def->cputune.quota);
+    if (def->cputune.global_period)
+        virBufferAsprintf(&childrenBuf, "<global_period>%llu</global_period>\n",
+                          def->cputune.global_period);
 
     if (def->cputune.emulator_period)
         virBufferAsprintf(&childrenBuf, "<emulator_period>%llu"

src/conf/domain_conf.h

@@ -2112,6 +2112,7 @@ struct _virDomainCputune {
     bool sharesSpecified;
     unsigned long long period;
     long long quota;
+    unsigned long long global_period;
     unsigned long long emulator_period;
     long long emulator_quota;
     virBitmapPtr emulatorpin;