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vircgroup: introduce virCgroupV2(Set|Get)BlkioWeight

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Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
This commit is contained in:
Pavel Hrdina 2018-08-17 16:51:28 +02:00
parent 525ac6885b
commit 11bb7f1561
1 changed files with 49 additions and 0 deletions
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49
src/util/vircgroupv2.c
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@ -520,6 +520,52 @@ virCgroupV2SetOwner(virCgroupPtr cgroup,
}
static int
virCgroupV2SetBlkioWeight(virCgroupPtr group,
unsigned int weight)
{
VIR_AUTOFREE(char *) value = NULL;
if (virAsprintf(&value, "default %u", weight) < 0)
return -1;
return virCgroupSetValueStr(group,
VIR_CGROUP_CONTROLLER_BLKIO,
"io.weight",
value);
}
static int
virCgroupV2GetBlkioWeight(virCgroupPtr group,
unsigned int *weight)
{
VIR_AUTOFREE(char *) value = NULL;
char *tmp;
if (virCgroupGetValueStr(group, VIR_CGROUP_CONTROLLER_BLKIO,
"io.weight", &value) < 0) {
return -1;
}
if (!(tmp = strstr(value, "default "))) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Cannot find default io weight."));
return -1;
}
tmp += strlen("default ");
if (virStrToLong_ui(tmp, NULL, 10, weight) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Unable to parse '%s' as an integer"),
tmp);
return -1;
}
return 0;
}
virCgroupBackend virCgroupV2Backend = {
.type = VIR_CGROUP_BACKEND_TYPE_V2,
@ -541,6 +587,9 @@ virCgroupBackend virCgroupV2Backend = {
.hasEmptyTasks = virCgroupV2HasEmptyTasks,
.bindMount = virCgroupV2BindMount,
.setOwner = virCgroupV2SetOwner,
.setBlkioWeight = virCgroupV2SetBlkioWeight,
.getBlkioWeight = virCgroupV2GetBlkioWeight,
};