From c840448ebbeb3d4c34eafecf9c9c31c86f2f020f Mon Sep 17 00:00:00 2001
From: Pavel Hrdina <phrdina@redhat.com>
Date: Fri, 17 Aug 2018 16:22:30 +0200
Subject: [PATCH] vircgroup: extract virCgroupV1(Set|Get)CpuCfsPeriod
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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        | 18 ++----------------
 src/util/vircgroupbackend.h | 10 ++++++++++
 src/util/vircgroupv1.c      | 32 ++++++++++++++++++++++++++++++++
 3 files changed, 44 insertions(+), 16 deletions(-)

diff --git a/src/util/vircgroup.c b/src/util/vircgroup.c
index 562071824b..8594f75eaf 100644
--- a/src/util/vircgroup.c
+++ b/src/util/vircgroup.c
@@ -2223,19 +2223,7 @@ virCgroupGetCpuShares(virCgroupPtr group, unsigned long long *shares)
 int
 virCgroupSetCpuCfsPeriod(virCgroupPtr group, unsigned long long cfs_period)
 {
-    /* The cfs_period should be greater or equal than 1ms, and less or equal
-     * than 1s.
-     */
-    if (cfs_period < 1000 || cfs_period > 1000000) {
-        virReportError(VIR_ERR_INVALID_ARG,
-                       _("cfs_period '%llu' must be in range (1000, 1000000)"),
-                       cfs_period);
-        return -1;
-    }
-
-    return virCgroupSetValueU64(group,
-                                VIR_CGROUP_CONTROLLER_CPU,
-                                "cpu.cfs_period_us", cfs_period);
+    VIR_CGROUP_BACKEND_CALL(group, setCpuCfsPeriod, -1, cfs_period);
 }
 
 
@@ -2250,9 +2238,7 @@ virCgroupSetCpuCfsPeriod(virCgroupPtr group, unsigned long long cfs_period)
 int
 virCgroupGetCpuCfsPeriod(virCgroupPtr group, unsigned long long *cfs_period)
 {
-    return virCgroupGetValueU64(group,
-                                VIR_CGROUP_CONTROLLER_CPU,
-                                "cpu.cfs_period_us", cfs_period);
+    VIR_CGROUP_BACKEND_CALL(group, getCpuCfsPeriod, -1, cfs_period);
 }
 
 
diff --git a/src/util/vircgroupbackend.h b/src/util/vircgroupbackend.h
index 54fbead8a2..7dc1f77bfd 100644
--- a/src/util/vircgroupbackend.h
+++ b/src/util/vircgroupbackend.h
@@ -284,6 +284,14 @@ typedef int
 (*virCgroupGetCpuSharesCB)(virCgroupPtr group,
                            unsigned long long *shares);
 
+typedef int
+(*virCgroupSetCpuCfsPeriodCB)(virCgroupPtr group,
+                              unsigned long long cfs_period);
+
+typedef int
+(*virCgroupGetCpuCfsPeriodCB)(virCgroupPtr group,
+                              unsigned long long *cfs_period);
+
 struct _virCgroupBackend {
     virCgroupBackendType type;
 
@@ -341,6 +349,8 @@ struct _virCgroupBackend {
 
     virCgroupSetCpuSharesCB setCpuShares;
     virCgroupGetCpuSharesCB getCpuShares;
+    virCgroupSetCpuCfsPeriodCB setCpuCfsPeriod;
+    virCgroupGetCpuCfsPeriodCB getCpuCfsPeriod;
 };
 typedef struct _virCgroupBackend virCgroupBackend;
 typedef virCgroupBackend *virCgroupBackendPtr;
diff --git a/src/util/vircgroupv1.c b/src/util/vircgroupv1.c
index 9ce10fcbad..f1760d474d 100644
--- a/src/util/vircgroupv1.c
+++ b/src/util/vircgroupv1.c
@@ -1785,6 +1785,36 @@ virCgroupV1GetCpuShares(virCgroupPtr group,
 }
 
 
+static int
+virCgroupV1SetCpuCfsPeriod(virCgroupPtr group,
+                           unsigned long long cfs_period)
+{
+    /* The cfs_period should be greater or equal than 1ms, and less or equal
+     * than 1s.
+     */
+    if (cfs_period < 1000 || cfs_period > 1000000) {
+        virReportError(VIR_ERR_INVALID_ARG,
+                       _("cfs_period '%llu' must be in range (1000, 1000000)"),
+                       cfs_period);
+        return -1;
+    }
+
+    return virCgroupSetValueU64(group,
+                                VIR_CGROUP_CONTROLLER_CPU,
+                                "cpu.cfs_period_us", cfs_period);
+}
+
+
+static int
+virCgroupV1GetCpuCfsPeriod(virCgroupPtr group,
+                           unsigned long long *cfs_period)
+{
+    return virCgroupGetValueU64(group,
+                                VIR_CGROUP_CONTROLLER_CPU,
+                                "cpu.cfs_period_us", cfs_period);
+}
+
+
 virCgroupBackend virCgroupV1Backend = {
     .type = VIR_CGROUP_BACKEND_TYPE_V1,
 
@@ -1840,6 +1870,8 @@ virCgroupBackend virCgroupV1Backend = {
 
     .setCpuShares = virCgroupV1SetCpuShares,
     .getCpuShares = virCgroupV1GetCpuShares,
+    .setCpuCfsPeriod = virCgroupV1SetCpuCfsPeriod,
+    .getCpuCfsPeriod = virCgroupV1GetCpuCfsPeriod,
 };