The option for removing vcpu pinning information from config was added
in:
'7ea9778 vcpupin: add vcpupin resetting feature to qemu driver'
and removed in:
'a02a161 qemu: libxl: vcpupin: Don't reset pinning when pinning to all pcpus'
by some reasons.
So, for now there is no way to remove vcpu pinning from config.
This patch returns options for remove vcpu/emulator pinning settings
from both configs if zero mask(mask filled by zeros) was specified.
Signed-off-by: Konstantin Neumoin <kneumoin@xxxxxxxxxxxxx>
---
src/qemu/qemu_driver.c | 74 +++++++++++++++++++++++++++++++++++---------------
1 file changed, 52 insertions(+), 22 deletions(-)
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index bec7a38..7aa64a4 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -4969,7 +4969,8 @@ qemuDomainPinVcpuLive(virDomainObjPtr vm,
virQEMUDriverConfigPtr cfg,
virBitmapPtr cpumap)
{
- virBitmapPtr tmpmap = NULL;
+ virBitmapPtr effective_cpumap = NULL;
+ virBitmapPtr allcpu_map = NULL;
virDomainVcpuInfoPtr vcpuinfo;
qemuDomainObjPrivatePtr priv = vm->privateData;
virCgroupPtr cgroup_vcpu = NULL;
@@ -4980,6 +4981,7 @@ qemuDomainPinVcpuLive(virDomainObjPtr vm,
int eventNparams = 0;
int eventMaxparams = 0;
int ret = -1;
+ int hostcpus = 0;
if (!qemuDomainHasVcpuPids(vm)) {
virReportError(VIR_ERR_OPERATION_INVALID,
@@ -4994,29 +4996,38 @@ qemuDomainPinVcpuLive(virDomainObjPtr vm,
goto cleanup;
}
- if (!(tmpmap = virBitmapNewCopy(cpumap)))
- goto cleanup;
+ if (vcpuinfo->online) {
+ if (cpumap) {
+ effective_cpumap = cpumap;
+ } else if (def->cpumask) {
+ effective_cpumap = def->cpumask;
+ } else {
+ if ((hostcpus = nodeGetCPUCount(NULL)) < 0)
+ goto cleanup;
- if (!(str = virBitmapFormat(cpumap)))
- goto cleanup;
+ if (!(allcpu_map = virBitmapNew(hostcpus)))
+ goto cleanup;
+ virBitmapSetAll(allcpu_map);
+ effective_cpumap = allcpu_map;
+ }
- 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 (qemuSetupCgroupCpusetCpus(cgroup_vcpu, cpumap) < 0)
+ if (qemuSetupCgroupCpusetCpus(cgroup_vcpu, effective_cpumap) < 0)
goto cleanup;
}
- if (virProcessSetAffinity(qemuDomainGetVcpuPid(vm, vcpu), cpumap) < 0)
+ if (virProcessSetAffinity(qemuDomainGetVcpuPid(vm, vcpu), effective_cpumap) < 0)
goto cleanup;
}
virBitmapFree(vcpuinfo->cpumask);
- vcpuinfo->cpumask = tmpmap;
- tmpmap = NULL;
+ vcpuinfo->cpumask = NULL;
+ if (cpumap && !(vcpuinfo->cpumask = virBitmapNewCopy(cpumap)))
+ goto cleanup;
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, driver->caps) < 0)
goto cleanup;
@@ -5026,6 +5037,9 @@ qemuDomainPinVcpuLive(virDomainObjPtr vm,
goto cleanup;
}
+ if (!(str = virBitmapFormat(effective_cpumap)))
+ goto cleanup;
+
if (virTypedParamsAddString(&eventParams, &eventNparams,
&eventMaxparams, paramField, str) < 0)
goto cleanup;
@@ -5035,7 +5049,7 @@ qemuDomainPinVcpuLive(virDomainObjPtr vm,
ret = 0;
cleanup:
- virBitmapFree(tmpmap);
+ virBitmapFree(allcpu_map);
virCgroupFree(&cgroup_vcpu);
VIR_FREE(str);
qemuDomainEventQueue(driver, event);
@@ -5089,9 +5103,8 @@ qemuDomainPinVcpuFlags(virDomainPtr dom,
goto endjob;
if (virBitmapIsAllClear(pcpumap)) {
- virReportError(VIR_ERR_INVALID_ARG, "%s",
- _("Empty cpu list for pinning"));
- goto endjob;
+ virBitmapFree(pcpumap);
+ pcpumap = NULL;
}
if (def &&
@@ -5177,12 +5190,15 @@ qemuDomainPinEmulator(virDomainPtr dom,
int ret = -1;
qemuDomainObjPrivatePtr priv;
virBitmapPtr pcpumap = NULL;
+ virBitmapPtr allcpu_map = NULL;
+ virBitmapPtr effective_pcpumap = NULL;
virQEMUDriverConfigPtr cfg = NULL;
virObjectEventPtr event = NULL;
char *str = NULL;
virTypedParameterPtr eventParams = NULL;
int eventNparams = 0;
int eventMaxparams = 0;
+ int hostcpus = 0;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG, -1);
@@ -5207,18 +5223,31 @@ qemuDomainPinEmulator(virDomainPtr dom,
goto endjob;
if (virBitmapIsAllClear(pcpumap)) {
- virReportError(VIR_ERR_INVALID_ARG, "%s",
- _("Empty cpu list for pinning"));
- goto endjob;
+ virBitmapFree(pcpumap);
+ pcpumap = NULL;
}
if (def) {
+ if (pcpumap) {
+ effective_pcpumap = pcpumap;
+ } else if (def->cpumask) {
+ effective_pcpumap = def->cpumask;
+ } else {
+ if ((hostcpus = nodeGetCPUCount(NULL)) < 0)
+ goto cleanup;
+
+ if (!(allcpu_map = virBitmapNew(hostcpus)))
+ goto cleanup;
+ virBitmapSetAll(allcpu_map);
+ effective_pcpumap = allcpu_map;
+ }
+
if (virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPUSET)) {
if (virCgroupNewThread(priv->cgroup, VIR_CGROUP_THREAD_EMULATOR,
0, false, &cgroup_emulator) < 0)
goto endjob;
- if (qemuSetupCgroupCpusetCpus(cgroup_emulator, pcpumap) < 0) {
+ if (qemuSetupCgroupCpusetCpus(cgroup_emulator, effective_pcpumap) < 0) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("failed to set cpuset.cpus in cgroup"
" for emulator threads"));
@@ -5226,19 +5255,19 @@ qemuDomainPinEmulator(virDomainPtr dom,
}
}
- if (virProcessSetAffinity(vm->pid, pcpumap) < 0)
+ if (virProcessSetAffinity(vm->pid, effective_pcpumap) < 0)
goto endjob;
virBitmapFree(def->cputune.emulatorpin);
def->cputune.emulatorpin = NULL;
- if (!(def->cputune.emulatorpin = virBitmapNewCopy(pcpumap)))
+ if (pcpumap && !(def->cputune.emulatorpin = virBitmapNewCopy(pcpumap)))
goto endjob;
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, driver->caps) < 0)
goto endjob;
- str = virBitmapFormat(pcpumap);
+ str = virBitmapFormat(effective_pcpumap);
if (virTypedParamsAddString(&eventParams, &eventNparams,
&eventMaxparams,
VIR_DOMAIN_TUNABLE_CPU_EMULATORPIN,
@@ -5252,7 +5281,7 @@ qemuDomainPinEmulator(virDomainPtr dom,
virBitmapFree(persistentDef->cputune.emulatorpin);
persistentDef->cputune.emulatorpin = NULL;
- if (!(persistentDef->cputune.emulatorpin = virBitmapNewCopy(pcpumap)))
+ if (pcpumap && !(persistentDef->cputune.emulatorpin = virBitmapNewCopy(pcpumap)))
goto endjob;
ret = virDomainSaveConfig(cfg->configDir, driver->caps, persistentDef);
@@ -5270,6 +5299,7 @@ qemuDomainPinEmulator(virDomainPtr dom,
qemuDomainEventQueue(driver, event);
VIR_FREE(str);
virBitmapFree(pcpumap);
+ virBitmapFree(allcpu_map);
virDomainObjEndAPI(&vm);
virObjectUnref(cfg);
return ret;
--
2.5.5
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