[libvirt] [PATCH 03/10] use cpuset to manage numa
This patch deprecates libnuma and uses cpuset to manage numa.
We can further add a `numatune' command to adjust numa parameters
through cpuset.
---
src/qemu/qemu_cgroup.c | 23 +++++++++++++++++++++++
1 files changed, 23 insertions(+), 0 deletions(-)
diff --git a/src/qemu/qemu_cgroup.c b/src/qemu/qemu_cgroup.c
index 2a10bd2..49307b2 100644
--- a/src/qemu/qemu_cgroup.c
+++ b/src/qemu/qemu_cgroup.c
@@ -365,6 +365,29 @@ int qemuSetupCgroup(struct qemud_driver *driver,
}
}
+ if (vm->def->numatune.memory.nodemask) {
+ if (qemuCgroupControllerActive(driver, VIR_CGROUP_CONTROLLER_CPUSET)) {
+ char *mask = virDomainCpuSetFormat(vm->def->numatune.memory.nodemask,
VIR_DOMAIN_CPUMASK_LEN);
+ if (!mask) {
+ qemuReportError(VIR_ERR_INTERNAL_ERROR,
+ _("failed to convert memory nodemask"));
+ goto cleanup;
+ }
+
+ rc = virCgroupSetCpusetMems(cgroup, mask);
+ if (rc != 0) {
+ virReportSystemError(-rc,
+ _("Unable to set cpuset.mems for domain
%s"),
+ vm->def->name);
+ goto cleanup;
+ }
+ } else {
+ qemuReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("Unable to set numa for domain %s since cpuset cgroup
is "
+ "not available on this host"),
vm->def->name);
+ goto cleanup;
+ }
+ }
done:
virCgroupFree(&cgroup);
return 0;
--
1.7.3.1