[libvirt] [PATCH 3/6] lxc: Introduce method lxcDomainGetStatsCpu().

[Julio Faracco]

This method is responsible to fetch all CPU Cgroup Stats and store data
into virDomainStatsRecordPtr structure.

Signed-off-by: Julio Faracco <jcfaracco at gmail.com>
---
 src/lxc/lxc_driver.c | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/src/lxc/lxc_driver.c b/src/lxc/lxc_driver.c
index 72639e0d7d..86c98517d2 100644
--- a/src/lxc/lxc_driver.c
+++ b/src/lxc/lxc_driver.c
@@ -5277,6 +5277,45 @@ lxcDomainGetMetadata(virDomainPtr dom,
     return ret;
 }
 
+static int
+lxcDomainGetStatsCpu(virDomainObjPtr dom,
+                     virDomainStatsRecordPtr record,
+                     int *maxparams)
+{
+    virLXCDomainObjPrivatePtr priv = dom->privateData;
+    unsigned long long cpu_time = 0;
+    unsigned long long user_time = 0;
+    unsigned long long sys_time = 0;
+    int err = 0;
+
+    if (!priv->cgroup)
+        return 0;
+
+    err = virCgroupGetCpuacctUsage(priv->cgroup, &cpu_time);
+    if (!err && virTypedParamsAddULLong(&record->params,
+                                        &record->nparams,
+                                        maxparams,
+                                        "cpu.time",
+                                        cpu_time) < 0)
+        return -1;
+
+    err = virCgroupGetCpuacctStat(priv->cgroup, &user_time, &sys_time);
+    if (!err && virTypedParamsAddULLong(&record->params,
+                                        &record->nparams,
+                                        maxparams,
+                                        "cpu.user",
+                                        user_time) < 0)
+        return -1;
+    if (!err && virTypedParamsAddULLong(&record->params,
+                                        &record->nparams,
+                                        maxparams,
+                                        "cpu.system",
+                                        sys_time) < 0)
+        return -1;
+
+    return 0;
+}
+
 static virDomainStatsRecordPtr
 lxcDomainGetStats(virConnectPtr conn,
                   virDomainObjPtr dom)
-- 
2.19.1