External/libvirt
1
0
Fork 0
mirror of https://gitlab.com/libvirt/libvirt.git synced 2025-03-20 07:59:00 +00:00
Code

Implement the virDomainSetMemoryStatsPeriod for QEMU driver

Browse Source 
Implement the new API that will handle setting the balloon driver statistics
collection period in order to enable or disable the collection dynamically.
This commit is contained in:
John Ferlan 2013-07-08 12:47:23 -04:00
parent ce2bdcbc86
commit 2431269bd3
1 changed files with 65 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

65
src/qemu/qemu_driver.c
View File

@ -2270,6 +2270,70 @@ static int qemuDomainSetMaxMemory(virDomainPtr dom, unsigned long memory)
return qemuDomainSetMemoryFlags(dom, memory, VIR_DOMAIN_MEM_MAXIMUM);
}
static int qemuDomainSetMemoryStatsPeriod(virDomainPtr dom, int period,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
qemuDomainObjPrivatePtr priv;
virDomainObjPtr vm;
virDomainDefPtr persistentDef = NULL;
int ret = -1, r;
virQEMUDriverConfigPtr cfg = NULL;
virCapsPtr caps = NULL;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
cfg = virQEMUDriverGetConfig(driver);
if (virDomainSetMemoryStatsPeriodEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (!(caps = virQEMUDriverGetCapabilities(driver, false)))
goto endjob;
if (virDomainLiveConfigHelperMethod(caps, driver->xmlopt, vm, &flags,
&persistentDef) < 0)
goto endjob;
/* Set the balloon driver collection interval */
priv = vm->privateData;
if (flags & VIR_DOMAIN_AFFECT_LIVE) {
qemuDomainObjEnterMonitor(driver, vm);
r = qemuMonitorSetMemoryStatsPeriod(priv->mon, period);
qemuDomainObjExitMonitor(driver, vm);
if (r < 0)
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("unable to set balloon driver collection period"));
}
if (flags & VIR_DOMAIN_AFFECT_CONFIG) {
sa_assert(persistentDef);
persistentDef->memballoon->period = period;
ret = virDomainSaveConfig(cfg->configDir, persistentDef);
goto endjob;
}
ret = 0;
endjob:
if (qemuDomainObjEndJob(driver, vm) == 0)
vm = NULL;
cleanup:
if (vm)
virObjectUnlock(vm);
virObjectUnref(caps);
virObjectUnref(cfg);
return ret;
}
static int qemuDomainInjectNMI(virDomainPtr domain, unsigned int flags)
{
virQEMUDriverPtr driver = domain->conn->privateData;
@ -16092,6 +16156,7 @@ static virDriver qemuDriver = {
.domainSetMemoryFlags = qemuDomainSetMemoryFlags, /* 0.9.0 */
.domainSetMemoryParameters = qemuDomainSetMemoryParameters, /* 0.8.5 */
.domainGetMemoryParameters = qemuDomainGetMemoryParameters, /* 0.8.5 */
.domainSetMemoryStatsPeriod = qemuDomainSetMemoryStatsPeriod, /* 1.1.1 */
.domainSetBlkioParameters = qemuDomainSetBlkioParameters, /* 0.9.0 */
.domainGetBlkioParameters = qemuDomainGetBlkioParameters, /* 0.9.0 */
.domainGetInfo = qemuDomainGetInfo, /* 0.2.0 */