[PATCHv4 1/6] Add functions to set/get cgroup cpuset parameters

[Eric Blake <eblake@xxxxxxxxxx>]

From: Hu Tao <hutao@xxxxxxxxxxxxxx>

---
 src/libvirt_private.syms |    2 ++
 src/util/cgroup.c        |   32 ++++++++++++++++++++++++++++++++
 src/util/cgroup.h        |    3 +++
 3 files changed, 37 insertions(+), 0 deletions(-)

diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index a649054..4a86bdc 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -78,6 +78,7 @@ virCgroupGetCpuShares;
 virCgroupGetCpuCfsPeriod;
 virCgroupGetCpuCfsQuota;
 virCgroupGetCpuacctUsage;
+virCgroupGetCpusetMems;
 virCgroupGetFreezerState;
 virCgroupGetMemoryHardLimit;
 virCgroupGetMemorySoftLimit;
@@ -94,6 +95,7 @@ virCgroupSetBlkioWeight;
 virCgroupSetCpuShares;
 virCgroupSetCpuCfsPeriod;
 virCgroupSetCpuCfsQuota;
+virCgroupSetCpusetMems;
 virCgroupSetFreezerState;
 virCgroupSetMemory;
 virCgroupSetMemoryHardLimit;
diff --git a/src/util/cgroup.c b/src/util/cgroup.c
index b4d3d8b..25f2691 100644
--- a/src/util/cgroup.c
+++ b/src/util/cgroup.c
@@ -1205,6 +1205,38 @@ int virCgroupGetMemSwapHardLimit(virCgroupPtr group, unsigned long long *kb)
 }

 /**
+ * virCgroupSetCpusetMems:
+ *
+ * @group: The cgroup to set cpuset.mems for
+ * @mems: the numa nodes to set
+ *
+ * Returns: 0 on success
+ */
+int virCgroupSetCpusetMems(virCgroupPtr group, const char *mems)
+{
+    return virCgroupSetValueStr(group,
+                                VIR_CGROUP_CONTROLLER_CPUSET,
+                                "cpuset.mems",
+                                mems);
+}
+
+/**
+ * virCgroupGetCpusetMems:
+ *
+ * @group: The cgroup to get cpuset.mems for
+ * @mems: the numa nodes to get
+ *
+ * Returns: 0 on success
+ */
+int virCgroupGetCpusetMems(virCgroupPtr group, char **mems)
+{
+    return virCgroupGetValueStr(group,
+                                VIR_CGROUP_CONTROLLER_CPUSET,
+                                "cpuset.mems",
+                                mems);
+}
+
+/**
  * virCgroupDenyAllDevices:
  *
  * @group: The cgroup to deny all permissions, for all devices
diff --git a/src/util/cgroup.h b/src/util/cgroup.h
index 70dd392..8d75735 100644
--- a/src/util/cgroup.h
+++ b/src/util/cgroup.h
@@ -119,6 +119,9 @@ int virCgroupGetCpuacctUsage(virCgroupPtr group, unsigned long long *usage);
 int virCgroupSetFreezerState(virCgroupPtr group, const char *state);
 int virCgroupGetFreezerState(virCgroupPtr group, char **state);

+int virCgroupSetCpusetMems(virCgroupPtr group, const char *mems);
+int virCgroupGetCpusetMems(virCgroupPtr group, char **mems);
+
 int virCgroupRemove(virCgroupPtr group);

 void virCgroupFree(virCgroupPtr *group);
-- 
1.7.7.4

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