[libvirt] [PATCH 06/12] Introduce qemuSetupCgroupHypervisorPin and synchronize hypervisorpin info to cgroup.

From: Tang Chen <tangchen(a)cn.fujitsu.com&gt; Introduce qemuSetupCgroupHypervisorPin() function to add hypervisor threads pin info to cpuset cgroup, the same as vcpupin. Signed-off-by: Tang Chen <tangchen(a)cn.fujitsu.com&gt; Signed-off-by: Hu Tao <hutao(a)cn.fujitsu.com&gt; --- src/qemu/qemu_cgroup.c | 36 ++++++++++++++++++++++++++++++++++++ src/qemu/qemu_cgroup.h | 1 + 2 files changed, 37 insertions(+) diff --git a/src/qemu/qemu_cgroup.c b/src/qemu/qemu_cgroup.c index 30346aa..43f71dc 100644 --- a/src/qemu/qemu_cgroup.c +++ b/src/qemu/qemu_cgroup.c @@ -516,6 +516,36 @@ cleanup: return rc; } +int qemuSetupCgroupHypervisorPin(virCgroupPtr cgroup, virDomainDefPtr def) +{ + int rc = 0; + char *new_cpus = NULL; + + if (!def->cputune.hypervisorpin) + return 0; + + new_cpus = virDomainCpuSetFormat(def->cputune.hypervisorpin->cpumask, + VIR_DOMAIN_CPUMASK_LEN); + if (!new_cpus) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("failed to convert cpu mask")); + rc = -1; + goto cleanup; + } + + rc = virCgroupSetCpusetCpus(cgroup, new_cpus); + if (rc < 0) { + virReportSystemError(-rc, + "%s", + _("Unable to set cpuset.cpus")); + goto cleanup; + } + +cleanup: + VIR_FREE(new_cpus); + return rc; +} + int qemuSetupCgroupForVcpu(struct qemud_driver *driver, virDomainObjPtr vm) { virCgroupPtr cgroup = NULL; @@ -625,6 +655,7 @@ int qemuSetupCgroupForHypervisor(struct qemud_driver *driver, { virCgroupPtr cgroup = NULL; virCgroupPtr cgroup_hypervisor = NULL; + virDomainDefPtr def = vm->def; int rc, i; if (driver->cgroup == NULL) @@ -661,6 +692,11 @@ int qemuSetupCgroupForHypervisor(struct qemud_driver *driver, } } + if (def->cputune.hypervisorpin && + qemuCgroupControllerActive(driver, VIR_CGROUP_CONTROLLER_CPUSET) && + qemuSetupCgroupHypervisorPin(cgroup_hypervisor, def) < 0) + goto cleanup; + virCgroupFree(&cgroup_hypervisor); virCgroupFree(&cgroup); return 0; diff --git a/src/qemu/qemu_cgroup.h b/src/qemu/qemu_cgroup.h index 62ec953..f321683 100644 --- a/src/qemu/qemu_cgroup.h +++ b/src/qemu/qemu_cgroup.h @@ -55,6 +55,7 @@ int qemuSetupCgroupVcpuBW(virCgroupPtr cgroup, long long quota); int qemuSetupCgroupVcpuPin(virCgroupPtr cgroup, virDomainDefPtr def, int vcpuid); +int qemuSetupCgroupHypervisorPin(virCgroupPtr cgroup, virDomainDefPtr def); int qemuSetupCgroupForVcpu(struct qemud_driver *driver, virDomainObjPtr vm); int qemuSetupCgroupForHypervisor(struct qemud_driver *driver, virDomainObjPtr vm); -- 1.7.10.2