[libvirt] [PATCH v2 33/53] [ACKED] vircgroup: introduce virCgroupV2(Set|Get)MemSwapHardLimit
Signed-off-by: Pavel Hrdina <phrdina(a)redhat.com>
---
src/util/vircgroupv2.c | 62 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 62 insertions(+)
diff --git a/src/util/vircgroupv2.c b/src/util/vircgroupv2.c
index 3044bb192a..fcadf9381d 100644
--- a/src/util/vircgroupv2.c
+++ b/src/util/vircgroupv2.c
@@ -1238,6 +1238,66 @@ virCgroupV2GetMemorySoftLimit(virCgroupPtr group,
}
+static int
+virCgroupV2SetMemSwapHardLimit(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.swap.max",
+ "max");
+ } else {
+ return virCgroupSetValueU64(group,
+ VIR_CGROUP_CONTROLLER_MEMORY,
+ "memory.swap.max",
+ kb << 10);
+ }
+}
+
+
+static int
+virCgroupV2GetMemSwapHardLimit(virCgroupPtr group,
+ unsigned long long *kb)
+{
+ VIR_AUTOFREE(char *) value = NULL;
+ unsigned long long max;
+
+ if (virCgroupGetValueStr(group,
+ VIR_CGROUP_CONTROLLER_MEMORY,
+ "memory.swap.max", &value) < 0) {
+ return -1;
+ }
+
+ if (STREQ(value, "max")) {
+ *kb = VIR_DOMAIN_MEMORY_PARAM_UNLIMITED;
+ return 0;
+ }
+
+ if (virStrToLong_ull(value, NULL, 10, &max) < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("Failed to parse value '%s' as number."),
+ value);
+ return -1;
+ }
+
+ *kb = max >> 10;
+ if (*kb >= VIR_DOMAIN_MEMORY_PARAM_UNLIMITED)
+ *kb = VIR_DOMAIN_MEMORY_PARAM_UNLIMITED;
+
+ return 0;
+}
+
+
virCgroupBackend virCgroupV2Backend = {
.type = VIR_CGROUP_BACKEND_TYPE_V2,
@@ -1282,6 +1342,8 @@ virCgroupBackend virCgroupV2Backend = {
.getMemoryHardLimit = virCgroupV2GetMemoryHardLimit,
.setMemorySoftLimit = virCgroupV2SetMemorySoftLimit,
.getMemorySoftLimit = virCgroupV2GetMemorySoftLimit,
+ .setMemSwapHardLimit = virCgroupV2SetMemSwapHardLimit,
+ .getMemSwapHardLimit = virCgroupV2GetMemSwapHardLimit,
};
--
2.17.1