Re: [libvirt] [PATCH 03/13] create a new cgroup and move all hypervisor threads to the new cgroup

create a new cgroup and move all hypervisor threads to the new cgroup. And then we can do the other things: 1. limit only vcpu usage rather than the whole qemu 2. limit for hypervisor threads(include vhost-net threads) Signed-off-by: Wen Congyang <wency(a)cn.fujitsu.com&gt; --- src/qemu/qemu_cgroup.c | 67 ++++++++++++++++++++++++++++++++++++++++++++--- src/qemu/qemu_cgroup.h | 2 ++ src/qemu/qemu_process.c | 6 ++++- 3 files changed, 70 insertions(+), 5 deletions(-) diff --git a/src/qemu/qemu_cgroup.c b/src/qemu/qemu_cgroup.c index f8f375f..5f7e8b0 100644 --- a/src/qemu/qemu_cgroup.c +++ b/src/qemu/qemu_cgroup.c @@ -523,11 +523,12 @@ int qemuSetupCgroupForVcpu(struct qemud_driver *driver, virDomainObjPtr vm) } if (priv->nvcpupids == 0 || priv->vcpupids[0] == vm->pid) { - /* If we does not know VCPU<->PID mapping or all vcpu runs in the same + /* If we does not know VCPU<->PID mapping or all vcpus run in the same * thread, we cannot control each vcpu. */ - virCgroupFree(&cgroup); - return 0; + qemuReportError(VIR_ERR_INTERNAL_ERROR, + _("Unable to get vcpus' pids."));