Re: [libvirt] [PATCH RESEND RFC v4 2/6] cgroup: Implement cpu.cfs_period_us and cpu.cfs_quota_us tuning API

--- src/libvirt_private.syms | 4 ++ src/util/cgroup.c | 81 ++++++++++++++++++++++++++++++++++++++++++++-- src/util/cgroup.h | 6 +++ 3 files changed, 88 insertions(+), 3 deletions(-)

+int virCgroupSetCpuCfsPeriod(virCgroupPtr group, unsigned long long cfs_period) +{ + /* The cfs_period shoule be greater or equal than 1ms, and less or equal + * than 1s. + */ + if (cfs_period < 1000 || cfs_period > 1000000) + return -EINVAL; + + return virCgroupSetValueU64(group, + VIR_CGROUP_CONTROLLER_CPU, + "cpu.cfs_period_us", cfs_period); +}

+int virCgroupGetCpuCfsPeriod(virCgroupPtr group, unsigned long long *cfs_period) +{ + return virCgroupGetValueU64(group, + VIR_CGROUP_CONTROLLER_CPU, + "cpu.cfs_period_us", cfs_period); +}