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Re: [libvirt] [PATCH v1 0/6] disable cgroup cpuset



ping...

On Wed, Nov 07, 2012 at 06:38:40PM +0800, Hu Tao wrote:
> 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
> 
> --
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