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vircgroup: introduce virCgroupV2(Set|Get)CpuCfsQuota

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Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
This commit is contained in:
Pavel Hrdina 2018-08-17 16:59:02 +02:00
parent 8324224572
commit 8e2c887ffa
1 changed files with 52 additions and 0 deletions
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52
src/util/vircgroupv2.c
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@ -1390,6 +1390,56 @@ virCgroupV2GetCpuCfsPeriod(virCgroupPtr group,
}
static int
virCgroupV2SetCpuCfsQuota(virCgroupPtr group,
long long cfs_quota)
{
/* The cfs_quota should be greater or equal than 1ms */
if (cfs_quota >= 0 &&
(cfs_quota < 1000 ||
cfs_quota > ULLONG_MAX / 1000)) {
virReportError(VIR_ERR_INVALID_ARG,
_("cfs_quota '%lld' must be in range (1000, %llu)"),
cfs_quota, ULLONG_MAX / 1000);
return -1;
}
if (cfs_quota == ULLONG_MAX / 1000) {
return virCgroupSetValueStr(group,
VIR_CGROUP_CONTROLLER_CPU,
"cpu.max", "max");
}
return virCgroupSetValueI64(group,
VIR_CGROUP_CONTROLLER_CPU,
"cpu.max", cfs_quota);
}
static int
virCgroupV2GetCpuCfsQuota(virCgroupPtr group,
long long *cfs_quota)
{
VIR_AUTOFREE(char *) str = NULL;
if (virCgroupGetValueStr(group, VIR_CGROUP_CONTROLLER_CPU,
"cpu.max", &str) < 0) {
return -1;
}
if (STREQLEN(str, "max", 3))
*cfs_quota = ULLONG_MAX / 1000;
if (virStrToLong_ll(str, NULL, 10, cfs_quota) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to parse value '%s' from cpu.max."), str);
return -1;
}
return 0;
}
virCgroupBackend virCgroupV2Backend = {
.type = VIR_CGROUP_BACKEND_TYPE_V2,
@ -1442,6 +1492,8 @@ virCgroupBackend virCgroupV2Backend = {
.getCpuShares = virCgroupV2GetCpuShares,
.setCpuCfsPeriod = virCgroupV2SetCpuCfsPeriod,
.getCpuCfsPeriod = virCgroupV2GetCpuCfsPeriod,
.setCpuCfsQuota = virCgroupV2SetCpuCfsQuota,
.getCpuCfsQuota = virCgroupV2GetCpuCfsQuota,
};