[libvirt] [PATCH RFC 0/5] support cpu bandwidth in libvirt

I need this feature immediately after CFS bandwidth patchset is merged into upstream kernel. So I prepare this patchset, and post it here for reviewing before CFS bandwidth is merged into upstream kernel. quota is an optional attribute specified in microseconds not a percentage of period. TODO: 1. quota should be in the range [1000, 18446744073709551(2^64/1000)] or less than 0. But I only limit it less or equal than 2^64/1000. Does anyone have a better way to limit quota? Wen Congyang (5): cgroup: Implement cpu.cfs_period_us and cpu.cfs_quota_us tuning API Update XML Schema for new entries qemu: Implement period and quota tunable XML configuration and parsing. qemu: Implement cfs_period and cfs_quota's modification doc: Add documentation for new cputune elements period and quota docs/formatdomain.html.in | 19 +++ docs/schemas/domain.rng | 25 ++++- src/conf/domain_conf.c | 20 +++- src/conf/domain_conf.h | 2 + src/libvirt_private.syms | 4 + src/qemu/qemu_cgroup.c | 43 +++++- src/qemu/qemu_driver.c | 162 +++++++++++++++++++---- src/util/cgroup.c | 81 +++++++++++- src/util/cgroup.h | 6 + tests/qemuxml2argvdata/qemuxml2argv-cputune.xml | 2 + 10 files changed, 328 insertions(+), 36 deletions(-)