Introduce the function virCgroupForHypervisor() to create sub directory for hypervisor thread(include I/O thread, vhost-net thread) --- src/libvirt_private.syms | 1 + src/util/cgroup.c | 42 ++++++++++++++++++++++++++++++++++++++++++ src/util/cgroup.h | 4 ++++ 3 files changed, 47 insertions(+), 0 deletions(-) diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index fdf2186..c581063 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -67,6 +67,7 @@ virCgroupDenyAllDevices; virCgroupDenyDevicePath; virCgroupForDomain; virCgroupForDriver; +virCgroupForHypervisor; virCgroupForVcpu; virCgroupFree; virCgroupGetBlkioWeight; diff --git a/src/util/cgroup.c b/src/util/cgroup.c index 5b32881..66d98e3 100644 --- a/src/util/cgroup.c +++ b/src/util/cgroup.c @@ -946,6 +946,48 @@ int virCgroupForVcpu(virCgroupPtr driver ATTRIBUTE_UNUSED, #endif /** + * virCgroupForHypervisor: + * + * @driver: group for the domain + * @group: Pointer to returned virCgroupPtr + * + * Returns 0 on success + */ +#if defined HAVE_MNTENT_H && defined HAVE_GETMNTENT_R +int virCgroupForHypervisor(virCgroupPtr driver, + virCgroupPtr *group, + int create) +{ + int rc; + char *path; + + if (driver == NULL) + return -EINVAL; + + if (virAsprintf(&path, "%s/hypervisor", driver->path) < 0) + return -ENOMEM; + + rc = virCgroupNew(path, group); + VIR_FREE(path); + + if (rc == 0) { + rc = virCgroupMakeGroup(driver, *group, create, VIR_CGROUP_VCPU); + if (rc != 0) + virCgroupFree(group); + } + + return rc; +} +#else +int virCgroupForHypervisor(virCgroupPtr driver ATTRIBUTE_UNUSED, + virCgroupPtr *group ATTRIBUTE_UNUSED, + int create ATTRIBUTE_UNUSED) +{ + return -ENXIO; +} + +#endif +/** * virCgroupSetBlkioWeight: * * @group: The cgroup to change io weight for diff --git a/src/util/cgroup.h b/src/util/cgroup.h index 05325ae..315ebd6 100644 --- a/src/util/cgroup.h +++ b/src/util/cgroup.h @@ -47,6 +47,10 @@ int virCgroupForVcpu(virCgroupPtr driver, virCgroupPtr *group, int create); +int virCgroupForHypervisor(virCgroupPtr driver, + virCgroupPtr *group, + int create); + int virCgroupPathOfController(virCgroupPtr group, int controller, const char *key, -- 1.7.3.1 -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list