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vircgroup: introduce virCgroupV2(Set|Get)MemorySoftLimit

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Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
This commit is contained in:
Pavel Hrdina 2018-08-17 16:57:00 +02:00
parent 2aa5385c58
commit 94db4bf86e
1 changed files with 61 additions and 0 deletions
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61
src/util/vircgroupv2.c
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@ -1170,6 +1170,65 @@ 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,
@ -1212,6 +1271,8 @@ virCgroupBackend virCgroupV2Backend = {
.getMemoryUsage = virCgroupV2GetMemoryUsage,
.setMemoryHardLimit = virCgroupV2SetMemoryHardLimit,
.getMemoryHardLimit = virCgroupV2GetMemoryHardLimit,
.setMemorySoftLimit = virCgroupV2SetMemorySoftLimit,
.getMemorySoftLimit = virCgroupV2GetMemorySoftLimit,
};