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qemu: cgroup: Refactor setup for IOThread cgroups

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Use the default or auto cpuset if they are provided for IOThreads.
This commit is contained in:
Peter Krempa 2015-03-27 13:22:02 +01:00
parent c9f9fa25d3
commit 7095006921
1 changed files with 17 additions and 12 deletions
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29
src/qemu/qemu_cgroup.c
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@ -1255,21 +1255,26 @@ qemuSetupCgroupForIOThreads(virDomainObjPtr vm)
/* Set iothreadpin in cgroup if iothreadpin xml is provided */
if (virCgroupHasController(priv->cgroup,
VIR_CGROUP_CONTROLLER_CPUSET)) {
/* find the right CPU to pin, otherwise
* qemuSetupCgroupIOThreadsPin will fail. */
virBitmapPtr cpumask = NULL;
/* default cpu masks */
if (def->placement_mode == VIR_DOMAIN_CPU_PLACEMENT_MODE_AUTO)
cpumask = priv->autoCpuset;
else
cpumask = def->cpumask;
/* specific cpu mask */
for (j = 0; j < def->cputune.niothreadspin; j++) {
/* IOThreads are numbered/named 1..n */
if (def->cputune.iothreadspin[j]->id != i + 1)
continue;
if (qemuSetupCgroupIOThreadsPin(cgroup_iothread,
def->cputune.iothreadspin,
def->cputune.niothreadspin,
i + 1) < 0)
goto cleanup;
break;
if (def->cputune.iothreadspin[j]->id == i + 1) {
cpumask = def->cputune.iothreadspin[j]->cpumask;
break;
}
}
if (cpumask &&
qemuSetupCgroupEmulatorPin(cgroup_iothread, cpumask) < 0)
goto cleanup;
}
virCgroupFree(&cgroup_iothread);