6:43 a.m.
Signed-off-by: Praveen K Paladugu <prapal(a)linux.microsoft.com>
---
src/ch/ch_driver.c | 154 +++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 154 insertions(+)
diff --git a/src/ch/ch_driver.c b/src/ch/ch_driver.c
index e3c0ae2952..bf5bb3696c 100644
--- a/src/ch/ch_driver.c
+++ b/src/ch/ch_driver.c
@@ -1303,6 +1303,158 @@ chDomainPinVcpu(virDomainPtr dom,
VIR_DOMAIN_AFFECT_LIVE);
}
+
+
+static int
+chDomainGetEmulatorPinInfo(virDomainPtr dom,
+ unsigned char *cpumaps,
+ int maplen,
+ unsigned int flags)
+{
+ virDomainObj *vm = NULL;
+ virDomainDef *def;
+ virCHDomainObjPrivate *priv;
+ bool live;
+ int ret = -1;
+ virBitmap *cpumask = NULL;
+ g_autoptr(virBitmap) bitmap = NULL;
+ virBitmap *autoCpuset = NULL;
+
+ virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
+ VIR_DOMAIN_AFFECT_CONFIG, -1);
+
+ if (!(vm = chDomObjFromDomain(dom)))
+ goto cleanup;
+
+ if (virDomainGetEmulatorPinInfoEnsureACL(dom->conn, vm->def) < 0)
+ goto cleanup;
+
+ if (!(def = virDomainObjGetOneDefState(vm, flags, &live)))
+ goto cleanup;
+
+ if (live) {
+ priv = vm->privateData;
+ autoCpuset = priv->autoCpuset;
+ }
+ if (def->cputune.emulatorpin) {
+ cpumask = def->cputune.emulatorpin;
+ } else if (def->cpumask) {
+ cpumask = def->cpumask;
+ } else if (vm->def->placement_mode == VIR_DOMAIN_CPU_PLACEMENT_MODE_AUTO
&&
+ autoCpuset) {
+ cpumask = autoCpuset;
+ } else {
+ if (!(bitmap = virHostCPUGetAvailableCPUsBitmap()))
+ goto cleanup;
+ cpumask = bitmap;
+ }
+
+ virBitmapToDataBuf(cpumask, cpumaps, maplen);
+
+ ret = 1;
+
+ cleanup:
+ virDomainObjEndAPI(&vm);
+ return ret;
+}
+
+static int
+chDomainPinEmulator(virDomainPtr dom,
+ unsigned char *cpumap,
+ int maplen,
+ unsigned int flags)
+{
+ virCHDriver *driver = dom->conn->privateData;
+ virDomainObj *vm;
+ virCgroup *cgroup_emulator = NULL;
+ virDomainDef *def;
+ virDomainDef *persistentDef;
+ int ret = -1;
+ virCHDomainObjPrivate *priv;
+ virBitmap *pcpumap = NULL;
+ g_autoptr(virCHDriverConfig) cfg = NULL;
+ g_autofree char *str = NULL;
+ virTypedParameterPtr eventParams = NULL;
+ int eventNparams = 0;
+ int eventMaxparams = 0;
+
+ virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
+ VIR_DOMAIN_AFFECT_CONFIG, -1);
+
+ cfg = virCHDriverGetConfig(driver);
+
+ if (!(vm = chDomObjFromDomain(dom)))
+ goto cleanup;
+
+ if (virDomainPinEmulatorEnsureACL(dom->conn, vm->def, flags) < 0)
+ goto cleanup;
+
+ if (virCHDomainObjBeginJob(vm, CH_JOB_MODIFY) < 0)
+ goto cleanup;
+
+ if (virDomainObjGetDefs(vm, flags, &def, &persistentDef) < 0)
+ goto endjob;
+
+ priv = vm->privateData;
+
+ if (!(pcpumap = virBitmapNewData(cpumap, maplen)))
+ goto endjob;
+
+ if (virBitmapIsAllClear(pcpumap)) {
+ virReportError(VIR_ERR_INVALID_ARG, "%s",
+ _("Empty cpu list for pinning"));
+ goto endjob;
+ }
+
+ if (def) {
+ if (virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPUSET)) {
+ if (virCgroupNewThread(priv->cgroup, VIR_CGROUP_THREAD_EMULATOR,
+ 0, false, &cgroup_emulator) < 0)
+ goto endjob;
+
+ if (virDomainCgroupSetupCpusetCpus(cgroup_emulator, pcpumap) < 0) {
+ virReportError(VIR_ERR_OPERATION_INVALID, "%s",
+ _("failed to set cpuset.cpus in cgroup"
+ " for emulator threads"));
+ goto endjob;
+ }
+ }
+
+ if (virProcessSetAffinity(vm->pid, pcpumap, false) < 0)
+ goto endjob;
+
+ virBitmapFree(def->cputune.emulatorpin);
+ def->cputune.emulatorpin = NULL;
+
+ if (!(def->cputune.emulatorpin = virBitmapNewCopy(pcpumap)))
+ goto endjob;
+
+ if (virDomainObjSave(vm, driver->xmlopt, cfg->stateDir) < 0)
+ goto endjob;
+
+ str = virBitmapFormat(pcpumap);
+ if (virTypedParamsAddString(&eventParams, &eventNparams,
+ &eventMaxparams,
+ VIR_DOMAIN_TUNABLE_CPU_EMULATORPIN,
+ str) < 0)
+ goto endjob;
+
+ }
+
+
+ ret = 0;
+
+ endjob:
+ virCHDomainObjEndJob(vm);
+
+ cleanup:
+ if (cgroup_emulator)
+ virCgroupFree(cgroup_emulator);
+ virBitmapFree(pcpumap);
+ virDomainObjEndAPI(&vm);
+ return ret;
+}
+
#define CH_NB_NUMA_PARAM 2
static int
@@ -1603,6 +1755,8 @@ static virHypervisorDriver chHypervisorDriver = {
.domainGetVcpuPinInfo = chDomainGetVcpuPinInfo, /* 8.0.0 */
.domainPinVcpu = chDomainPinVcpu, /* 8.0.0 */
.domainPinVcpuFlags = chDomainPinVcpuFlags, /* 8.0.0 */
+ .domainPinEmulator = chDomainPinEmulator, /* 8.0.0 */
+ .domainGetEmulatorPinInfo = chDomainGetEmulatorPinInfo, /* 8.0.0 */
.nodeGetCPUMap = chNodeGetCPUMap, /* 8.0.0 */
.domainSetNumaParameters = chDomainSetNumaParameters, /* 8.0.0 */
.domainGetNumaParameters = chDomainGetNumaParameters, /* 8.0.0 */
--
2.27.0