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From 6a1f3fdcf13ff1fdcbd1f63443a1e5d05b2ddd1c Mon Sep 17 00:00:00 2001
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Message-Id: <6a1f3fdcf13ff1fdcbd1f63443a1e5d05b2ddd1c@dist-git>
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From: Pavel Hrdina <phrdina@redhat.com>
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Date: Mon, 1 Jul 2019 17:07:43 +0200
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Subject: [PATCH] vircgroup: introduce virCgroupV2(Set|Get)MemorySoftLimit
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
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(cherry picked from commit 94db4bf86ea10e9853f62c4ea079a432482a58df)
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Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1689297
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Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
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Message-Id: <a59c442f9098898c0196a5fb2a0d3527ce277153.1561993100.git.phrdina@redhat.com>
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Reviewed-by: Ján Tomko <jtomko@redhat.com>
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---
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src/util/vircgroupv2.c | 61 ++++++++++++++++++++++++++++++++++++++++++
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1 file changed, 61 insertions(+)
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diff --git a/src/util/vircgroupv2.c b/src/util/vircgroupv2.c
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index 81a577d28f..d8a1d7712f 100644
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--- a/src/util/vircgroupv2.c
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+++ b/src/util/vircgroupv2.c
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@@ -1171,6 +1171,65 @@ virCgroupV2GetMemoryHardLimit(virCgroupPtr group,
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}
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+static int
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+virCgroupV2SetMemorySoftLimit(virCgroupPtr group,
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+ unsigned long long kb)
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+{
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+ unsigned long long maxkb = VIR_DOMAIN_MEMORY_PARAM_UNLIMITED;
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+
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+ if (kb > maxkb) {
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+ virReportError(VIR_ERR_INVALID_ARG,
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+ _("Memory '%llu' must be less than %llu"),
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+ kb, maxkb);
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+ return -1;
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+ }
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+
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+ if (kb == maxkb) {
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+ return virCgroupSetValueStr(group,
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+ VIR_CGROUP_CONTROLLER_MEMORY,
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+ "memory.high",
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+ "max");
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+ } else {
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+ return virCgroupSetValueU64(group,
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+ VIR_CGROUP_CONTROLLER_MEMORY,
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+ "memory.high",
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+ kb << 10);
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+ }
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+}
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+
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+
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+static int
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+virCgroupV2GetMemorySoftLimit(virCgroupPtr group,
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+ unsigned long long *kb)
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+{
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+ VIR_AUTOFREE(char *) value = NULL;
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+ unsigned long long high;
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+
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+ if (virCgroupGetValueStr(group,
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+ VIR_CGROUP_CONTROLLER_MEMORY,
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+ "memory.high", &value) < 0)
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+ return -1;
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+
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+ if (STREQ(value, "max")) {
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+ *kb = VIR_DOMAIN_MEMORY_PARAM_UNLIMITED;
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+ return 0;
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+ }
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+
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+ if (virStrToLong_ull(value, NULL, 10, &high) < 0) {
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+ virReportError(VIR_ERR_INTERNAL_ERROR,
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+ _("Failed to parse value '%s' as number."),
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+ value);
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+ return -1;
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+ }
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+
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+ *kb = high >> 10;
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+ if (*kb >= VIR_DOMAIN_MEMORY_PARAM_UNLIMITED)
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+ *kb = VIR_DOMAIN_MEMORY_PARAM_UNLIMITED;
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+
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+ return 0;
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+}
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+
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+
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virCgroupBackend virCgroupV2Backend = {
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.type = VIR_CGROUP_BACKEND_TYPE_V2,
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@@ -1213,6 +1272,8 @@ virCgroupBackend virCgroupV2Backend = {
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.getMemoryUsage = virCgroupV2GetMemoryUsage,
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.setMemoryHardLimit = virCgroupV2SetMemoryHardLimit,
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.getMemoryHardLimit = virCgroupV2GetMemoryHardLimit,
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+ .setMemorySoftLimit = virCgroupV2SetMemorySoftLimit,
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+ .getMemorySoftLimit = virCgroupV2GetMemorySoftLimit,
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};
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--
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2.22.0
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