The reason to disable cgroup cpuset by default is: currently, sub-directories of cgroup cpuset won't be auto-updated if cpu hot-plug happens. For example, if we now have 0-3,5-7 pcpus online, the value of /sys/fs/cgroup/cpuset/libvirt/qemu/mydom/cpuset.cpus is 0-3,5-7, then pcpu 4 is hot-plugged, but the value of cpuset.cpus is still 0-3,5-7. This will cause a problem that we can't pin to a hot-plugged pcpu.
Users can still enable cpuset by editing qemu.conf. Hu Tao (6): cgroup: Add a flag VIR_CGROUP_DISABLE_CPUSET create cgroup controllers for driver according to config create cgroup controllers for domain according to config create cgroup controllers for vcpu according to config create cgroup controllers for emulator according to config disable cgroup cpuset by default src/lxc/lxc_cgroup.c | 4 +-- src/lxc/lxc_driver.c | 22 ++++++------ src/lxc/lxc_process.c | 4 +-- src/qemu/qemu.conf | 2 +- src/qemu/qemu_cgroup.c | 15 ++++---- src/qemu/qemu_conf.c | 1 - src/qemu/qemu_driver.c | 92 +++++++++++++++++++++++++++++------------------ src/qemu/qemu_hotplug.c | 9 +++-- src/qemu/qemu_migration.c | 2 +- src/util/cgroup.c | 49 +++++++++++++++++++------ src/util/cgroup.h | 12 ++++--- 11 files changed, 136 insertions(+), 76 deletions(-) -- 1.7.11.7 -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
