8:16 a.m.
From: Nikunj A. Dadhania <nikunj(a)linux.vnet.ibm.com>
Public api to set memory tunables supported by the hypervisors.
RFC: https://www.redhat.com/archives/libvir-list/2010-August/msg00607.html
v2:
Initialize domainSetMemoryParameters to NULL in all the driver interface
structure.
Signed-off-by: Nikunj A. Dadhania <nikunj(a)linux.vnet.ibm.com>
---
src/driver.h | 6 +++++
src/esx/esx_driver.c | 1 +
src/libvirt.c | 49 ++++++++++++++++++++++++++++++++++++++++++++
src/lxc/lxc_driver.c | 1 +
src/openvz/openvz_driver.c | 1 +
src/phyp/phyp_driver.c | 1 +
src/qemu/qemu_driver.c | 1 +
src/remote/remote_driver.c | 1 +
src/test/test_driver.c | 1 +
src/uml/uml_driver.c | 1 +
src/xen/xen_driver.c | 1 +
11 files changed, 64 insertions(+), 0 deletions(-)
diff --git a/src/driver.h b/src/driver.h
index e443c1c..01004e3 100644
--- a/src/driver.h
+++ b/src/driver.h
@@ -128,6 +128,11 @@ typedef int
(*virDrvDomainSetMemory) (virDomainPtr domain,
unsigned long memory);
typedef int
+ (*virDrvDomainSetMemoryParameters)
+ (virDomainPtr domain,
+ virMemoryParameterPtr params,
+ int nparams);
+typedef int
(*virDrvDomainGetInfo) (virDomainPtr domain,
virDomainInfoPtr info);
typedef int
@@ -575,6 +580,7 @@ struct _virDriver {
virDrvDomainRevertToSnapshot domainRevertToSnapshot;
virDrvDomainSnapshotDelete domainSnapshotDelete;
virDrvQemuDomainMonitorCommand qemuDomainMonitorCommand;
+ virDrvDomainSetMemoryParameters domainSetMemoryParameters;
};
typedef int
diff --git a/src/esx/esx_driver.c b/src/esx/esx_driver.c
index e382950..be55796 100644
--- a/src/esx/esx_driver.c
+++ b/src/esx/esx_driver.c
@@ -4217,6 +4217,7 @@ static virDriver esxDriver = {
esxDomainRevertToSnapshot, /* domainRevertToSnapshot */
esxDomainSnapshotDelete, /* domainSnapshotDelete */
NULL, /* qemuDomainMonitorCommand */
+ NULL, /* domainSetMemoryParameters */
};
diff --git a/src/libvirt.c b/src/libvirt.c
index ca383ba..64daaa3 100644
--- a/src/libvirt.c
+++ b/src/libvirt.c
@@ -3000,6 +3000,55 @@ error:
}
/**
+ * virDomainSetMemoryParameters:
+ * @domain: pointer to domain object
+ * @params: pointer to memory parameter objects
+ * @nparams: number of memory parameter (this value should be same or
+ * less than the number of parameters supported)
+ *
+ * Change the memory tunables
+ * This function requires privileged access to the hypervisor.
+ * FIXME: Should we make changes to the domain configuration file as well?
+ *
+ * Returns -1 in case of error, 0 in case of success.
+ */
+int
+virDomainSetMemoryParameters(virDomainPtr domain,
+ virMemoryParameterPtr params,
+ int nparams)
+{
+ virConnectPtr conn;
+ DEBUG("domain=%p, params=%p, nparams=%d", domain, params, nparams);
+
+ virResetLastError();
+
+ if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
+ virLibDomainError(NULL, VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
+ virDispatchError(NULL);
+ return -1;
+ }
+ if (domain->conn->flags & VIR_CONNECT_RO) {
+ virLibDomainError(domain, VIR_ERR_OPERATION_DENIED, __FUNCTION__);
+ goto error;
+ }
+ conn = domain->conn;
+
+ if (conn->driver->domainSetMemoryParameters) {
+ int ret;
+ ret = conn->driver->domainSetMemoryParameters (domain, params, nparams);
+ if (ret < 0)
+ goto error;
+ return ret;
+ }
+
+ virLibConnError (conn, VIR_ERR_NO_SUPPORT, __FUNCTION__);
+
+error:
+ virDispatchError(domain->conn);
+ return -1;
+}
+
+/**
* virDomainGetInfo:
* @domain: a domain object
* @info: pointer to a virDomainInfo structure allocated by the user
diff --git a/src/lxc/lxc_driver.c b/src/lxc/lxc_driver.c
index 326fee6..9a4843d 100644
--- a/src/lxc/lxc_driver.c
+++ b/src/lxc/lxc_driver.c
@@ -2620,6 +2620,7 @@ static virDriver lxcDriver = {
NULL, /* domainRevertToSnapshot */
NULL, /* domainSnapshotDelete */
NULL, /* qemuDomainMonitorCommand */
+ NULL, /* domainSetMemoryParameters */
};
static virStateDriver lxcStateDriver = {
diff --git a/src/openvz/openvz_driver.c b/src/openvz/openvz_driver.c
index 1ad93d9..edef080 100644
--- a/src/openvz/openvz_driver.c
+++ b/src/openvz/openvz_driver.c
@@ -1657,6 +1657,7 @@ static virDriver openvzDriver = {
NULL, /* domainRevertToSnapshot */
NULL, /* domainSnapshotDelete */
NULL, /* qemuDomainMonitorCommand */
+ NULL, /* domainSetMemoryParameters */
};
int openvzRegister(void) {
diff --git a/src/phyp/phyp_driver.c b/src/phyp/phyp_driver.c
index 8eeba73..fce451c 100644
--- a/src/phyp/phyp_driver.c
+++ b/src/phyp/phyp_driver.c
@@ -3980,6 +3980,7 @@ static virDriver phypDriver = {
NULL, /* domainRevertToSnapshot */
NULL, /* domainSnapshotDelete */
NULL, /* qemuMonitorCommand */
+ NULL, /* domainSetMemoryParameters */
};
static virStorageDriver phypStorageDriver = {
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 25695df..d6dd1da 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -12710,6 +12710,7 @@ static virDriver qemuDriver = {
qemuDomainRevertToSnapshot, /* domainRevertToSnapshot */
qemuDomainSnapshotDelete, /* domainSnapshotDelete */
qemuDomainMonitorCommand, /* qemuDomainMonitorCommand */
+ NULL, /* domainSetMemoryParameters */
};
diff --git a/src/remote/remote_driver.c b/src/remote/remote_driver.c
index a945710..1e9cb6c 100644
--- a/src/remote/remote_driver.c
+++ b/src/remote/remote_driver.c
@@ -10358,6 +10358,7 @@ static virDriver remote_driver = {
remoteDomainRevertToSnapshot, /* domainRevertToSnapshot */
remoteDomainSnapshotDelete, /* domainSnapshotDelete */
remoteQemuDomainMonitorCommand, /* qemuDomainMonitorCommand */
+ NULL, /* domainSetMemoryParameters */
};
static virNetworkDriver network_driver = {
diff --git a/src/test/test_driver.c b/src/test/test_driver.c
index 9d22339..3560a19 100644
--- a/src/test/test_driver.c
+++ b/src/test/test_driver.c
@@ -5327,6 +5327,7 @@ static virDriver testDriver = {
NULL, /* domainRevertToSnapshot */
NULL, /* domainSnapshotDelete */
NULL, /* qemuDomainMonitorCommand */
+ NULL, /* domainSetMemoryParameters */
};
static virNetworkDriver testNetworkDriver = {
diff --git a/src/uml/uml_driver.c b/src/uml/uml_driver.c
index 9101928..50c8152 100644
--- a/src/uml/uml_driver.c
+++ b/src/uml/uml_driver.c
@@ -2196,6 +2196,7 @@ static virDriver umlDriver = {
NULL, /* domainRevertToSnapshot */
NULL, /* domainSnapshotDelete */
NULL, /* qemuDomainMonitorCommand */
+ NULL, /* domainSetMemoryParamters */
};
static int
diff --git a/src/xen/xen_driver.c b/src/xen/xen_driver.c
index 56ba41b..e5ed3d7 100644
--- a/src/xen/xen_driver.c
+++ b/src/xen/xen_driver.c
@@ -2006,6 +2006,7 @@ static virDriver xenUnifiedDriver = {
NULL, /* domainRevertToSnapshot */
NULL, /* domainSnapshotDelete */
NULL, /* qemuDomainMonitorCommand */
+ NULL, /* domainSetMemoryParameters */
};
/**