[libvirt] [PATCH v2 32/53] [ACKED] vircgroup: introduce virCgroupV2(Set|Get)MemorySoftLimit
Signed-off-by: Pavel Hrdina <phrdina(a)redhat.com>
---
src/util/vircgroupv2.c | 61 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 61 insertions(+)
diff --git a/src/util/vircgroupv2.c b/src/util/vircgroupv2.c
index 0904eaa548..3044bb192a 100644
--- a/src/util/vircgroupv2.c
+++ b/src/util/vircgroupv2.c
@@ -1179,6 +1179,65 @@ virCgroupV2GetMemoryHardLimit(virCgroupPtr group,
}
+static int
+virCgroupV2SetMemorySoftLimit(virCgroupPtr group,
+ unsigned long long kb)
+{
+ unsigned long long maxkb = VIR_DOMAIN_MEMORY_PARAM_UNLIMITED;
+
+ if (kb > maxkb) {
+ virReportError(VIR_ERR_INVALID_ARG,
+ _("Memory '%llu' must be less than %llu"),
+ kb, maxkb);
+ return -1;
+ }
+
+ if (kb == maxkb) {
+ return virCgroupSetValueStr(group,
+ VIR_CGROUP_CONTROLLER_MEMORY,
+ "memory.high",
+ "max");
+ } else {
+ return virCgroupSetValueU64(group,
+ VIR_CGROUP_CONTROLLER_MEMORY,
+ "memory.high",
+ kb << 10);
+ }
+}
+
+
+static int
+virCgroupV2GetMemorySoftLimit(virCgroupPtr group,
+ unsigned long long *kb)
+{
+ VIR_AUTOFREE(char *) value = NULL;
+ unsigned long long high;
+
+ if (virCgroupGetValueStr(group,
+ VIR_CGROUP_CONTROLLER_MEMORY,
+ "memory.high", &value) < 0)
+ return -1;
+
+ if (STREQ(value, "max")) {
+ *kb = VIR_DOMAIN_MEMORY_PARAM_UNLIMITED;
+ return 0;
+ }
+
+ if (virStrToLong_ull(value, NULL, 10, &high) < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("Failed to parse value '%s' as number."),
+ value);
+ return -1;
+ }
+
+ *kb = high >> 10;
+ if (*kb >= VIR_DOMAIN_MEMORY_PARAM_UNLIMITED)
+ *kb = VIR_DOMAIN_MEMORY_PARAM_UNLIMITED;
+
+ return 0;
+}
+
+
virCgroupBackend virCgroupV2Backend = {
.type = VIR_CGROUP_BACKEND_TYPE_V2,
@@ -1221,6 +1280,8 @@ virCgroupBackend virCgroupV2Backend = {
.getMemoryUsage = virCgroupV2GetMemoryUsage,
.setMemoryHardLimit = virCgroupV2SetMemoryHardLimit,
.getMemoryHardLimit = virCgroupV2GetMemoryHardLimit,
+ .setMemorySoftLimit = virCgroupV2SetMemorySoftLimit,
+ .getMemorySoftLimit = virCgroupV2GetMemorySoftLimit,
};
--
2.17.1