From: Vineeth Pillai <viremana@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Vineeth Pillai <viremana@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Praveen K Paladugu <prapal@xxxxxxxxxxxxxxxxxxx>
---
src/ch/ch_domain.c | 30 +++++++++
src/ch/ch_domain.h | 1 +
src/ch/ch_driver.c | 151 +++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 182 insertions(+)
diff --git a/src/ch/ch_domain.c b/src/ch/ch_domain.c
index d0aaeed1f4..9ad00583aa 100644
--- a/src/ch/ch_domain.c
+++ b/src/ch/ch_domain.c
@@ -20,6 +20,7 @@
#include <config.h>
+#include "datatypes.h"
#include "ch_domain.h"
#include "domain_driver.h"
#include "viralloc.h"
@@ -420,3 +421,32 @@ char *virCHDomainGetMachineName(virDomainObj *vm)
return ret;
}
+
+/**
+ * virCHDomainObjFromDomain:
+ * @domain: Domain pointer that has to be looked up
+ *
+ * This function looks up @domain and returns the appropriate virDomainObjPtr
+ * that has to be released by calling virDomainObjEndAPI().
+ *
+ * Returns the domain object with incremented reference counter which is locked
+ * on success, NULL otherwise.
+ */
+virDomainObj *
+virCHDomainObjFromDomain(virDomainPtr domain)
+{
+ virDomainObj *vm;
+ virCHDriver *driver = domain->conn->privateData;
+ char uuidstr[VIR_UUID_STRING_BUFLEN];
+
+ vm = virDomainObjListFindByUUID(driver->domains, domain->uuid);
+ if (!vm) {
+ virUUIDFormat(domain->uuid, uuidstr);
+ virReportError(VIR_ERR_NO_DOMAIN,
+ _("no domain with matching uuid '%s' (%s)"),
+ uuidstr, domain->name);
+ return NULL;
+ }
+
+ return vm;
+}
diff --git a/src/ch/ch_domain.h b/src/ch/ch_domain.h
index 2ce3e2cef3..db1451405b 100644
--- a/src/ch/ch_domain.h
+++ b/src/ch/ch_domain.h
@@ -95,3 +95,4 @@ pid_t virCHDomainGetVcpuPid(virDomainObj *vm, unsigned int vcpuid);
bool virCHDomainHasVcpuPids(virDomainObj *vm);
char *virCHDomainGetMachineName(virDomainObj *vm);
+virDomainObj *virCHDomainObjFromDomain(virDomain *domain);
diff --git a/src/ch/ch_driver.c b/src/ch/ch_driver.c
index ca854da123..7f3cf6dbef 100644
--- a/src/ch/ch_driver.c
+++ b/src/ch/ch_driver.c
@@ -25,6 +25,7 @@
#include "ch_driver.h"
#include "ch_monitor.h"
#include "ch_process.h"
+#include "ch_cgroup.h"
#include "datatypes.h"
#include "driver.h"
#include "viraccessapicheck.h"
@@ -1141,6 +1142,154 @@ chDomainGetVcpus(virDomainPtr dom,
return ret;
}
+static int
+chDomainPinVcpuLive(virDomainObj *vm,
+ virDomainDef *def,
+ int vcpu,
+ virCHDriver *driver,
+ virCHDriverConfig *cfg,
+ virBitmap *cpumap)
+{
+ virBitmap *tmpmap = NULL;
+ virDomainVcpuDef *vcpuinfo;
+ virCHDomainObjPrivate *priv = vm->privateData;
+ virCgroup *cgroup_vcpu = NULL;
+ g_autofree char *str = NULL;
+ int ret = -1;
+
+ if (!virCHDomainHasVcpuPids(vm)) {
+ virReportError(VIR_ERR_OPERATION_INVALID,
+ "%s", _("cpu affinity is not supported"));
+ goto cleanup;
+ }
+
+ if (!(vcpuinfo = virDomainDefGetVcpu(def, vcpu))) {
+ virReportError(VIR_ERR_INVALID_ARG,
+ _("vcpu %d is out of range of live cpu count %d"),
+ vcpu, virDomainDefGetVcpusMax(def));
+ goto cleanup;
+ }
+
+ if (!(tmpmap = virBitmapNewCopy(cpumap)))
+ goto cleanup;
+
+ if (!(str = virBitmapFormat(cpumap)))
+ goto cleanup;
+
+ if (vcpuinfo->online) {
+ /* Configure the corresponding cpuset cgroup before set affinity. */
+ if (virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPUSET)) {
+ if (virCgroupNewThread(priv->cgroup, VIR_CGROUP_THREAD_VCPU, vcpu,
+ false, &cgroup_vcpu) < 0)
+ goto cleanup;
+ if (chSetupCgroupCpusetCpus(cgroup_vcpu, cpumap) < 0)
+ goto cleanup;
+ }
+
+ if (virProcessSetAffinity(virCHDomainGetVcpuPid(vm, vcpu), cpumap, false) < 0)
+ goto cleanup;
+ }
+
+ virBitmapFree(vcpuinfo->cpumask);
+ vcpuinfo->cpumask = tmpmap;
+ tmpmap = NULL;
+
+ if (virDomainObjSave(vm, driver->xmlopt, cfg->stateDir) < 0)
+ goto cleanup;
+
+ ret = 0;
+
+ cleanup:
+ virBitmapFree(tmpmap);
+ virCgroupFree(cgroup_vcpu);
+ return ret;
+}
+
+
+static int
+chDomainPinVcpuFlags(virDomainPtr dom,
+ unsigned int vcpu,
+ unsigned char *cpumap,
+ int maplen,
+ unsigned int flags)
+{
+ virCHDriver *driver = dom->conn->privateData;
+ virDomainObj *vm;
+ virDomainDef *def;
+ virDomainDef *persistentDef;
+ int ret = -1;
+ virBitmap *pcpumap = NULL;
+ virDomainVcpuDef *vcpuinfo = NULL;
+ g_autoptr(virCHDriverConfig) cfg = NULL;
+
+ virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
+ VIR_DOMAIN_AFFECT_CONFIG, -1);
+
+ cfg = virCHDriverGetConfig(driver);
+
+ if (!(vm = virCHDomainObjFromDomain(dom)))
+ goto cleanup;
+
+ if (virDomainPinVcpuFlagsEnsureACL(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;
+
+ if (persistentDef &&
+ !(vcpuinfo = virDomainDefGetVcpu(persistentDef, vcpu))) {
+ virReportError(VIR_ERR_INVALID_ARG,
+ _("vcpu %d is out of range of persistent cpu count %d"),
+ vcpu, virDomainDefGetVcpus(persistentDef));
+ goto endjob;
+ }
+
+ 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 &&
+ chDomainPinVcpuLive(vm, def, vcpu, driver, cfg, pcpumap) < 0)
+ goto endjob;
+
+ if (persistentDef) {
+ virBitmapFree(vcpuinfo->cpumask);
+ vcpuinfo->cpumask = pcpumap;
+ pcpumap = NULL;
+
+ // ret = virDomainDefSave(persistentDef, driver->xmlopt, cfg->configDir);
+ goto endjob;
+ }
+
+ ret = 0;
+
+ endjob:
+ virCHDomainObjEndJob(vm);
+
+ cleanup:
+ virDomainObjEndAPI(&vm);
+ virBitmapFree(pcpumap);
+ return ret;
+}
+
+static int
+chDomainPinVcpu(virDomainPtr dom,
+ unsigned int vcpu,
+ unsigned char *cpumap,
+ int maplen)
+{
+ return chDomainPinVcpuFlags(dom, vcpu, cpumap, maplen,
+ VIR_DOMAIN_AFFECT_LIVE);
+}
+
/* Function Tables */
static virHypervisorDriver chHypervisorDriver = {
.name = "CH",
@@ -1181,6 +1330,8 @@ static virHypervisorDriver chHypervisorDriver = {
.domainGetVcpusFlags = chDomainGetVcpusFlags, /* 7.9.0 */
.domainGetMaxVcpus = chDomainGetMaxVcpus, /* 7.9.0 */
.domainGetVcpuPinInfo = chDomainGetVcpuPinInfo, /* 7.9.0 */
+ .domainPinVcpu = chDomainPinVcpu, /* 7.9.0 */
+ .domainPinVcpuFlags = chDomainPinVcpuFlags, /* 7.9.0 */
.nodeGetCPUMap = chNodeGetCPUMap, /* 7.9.0 */
};
--
2.27.0
