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From ba7babc00b91a08c7c62858b6c34f1f0c77af0ce Mon Sep 17 00:00:00 2001
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Message-Id: <ba7babc00b91a08c7c62858b6c34f1f0c77af0ce@dist-git>
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From: Pavel Hrdina <phrdina@redhat.com>
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Date: Mon, 1 Jul 2019 17:07:31 +0200
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Subject: [PATCH] vircgroup: introduce virCgroupV2(Set|Get)BlkioWeight
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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 11bb7f1561be311b71f3899332dfabe61c55a793)
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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: <8e485d7c092d35f80e10da00af74fd30554b43bf.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 | 49 ++++++++++++++++++++++++++++++++++++++++++
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1 file changed, 49 insertions(+)
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diff --git a/src/util/vircgroupv2.c b/src/util/vircgroupv2.c
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index 27519d80e3..f7863a5690 100644
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--- a/src/util/vircgroupv2.c
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+++ b/src/util/vircgroupv2.c
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@@ -521,6 +521,52 @@ virCgroupV2SetOwner(virCgroupPtr cgroup,
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}
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+static int
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+virCgroupV2SetBlkioWeight(virCgroupPtr group,
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+ unsigned int weight)
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+{
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+ VIR_AUTOFREE(char *) value = NULL;
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+
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+ if (virAsprintf(&value, "default %u", weight) < 0)
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+ return -1;
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+
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+ return virCgroupSetValueStr(group,
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+ VIR_CGROUP_CONTROLLER_BLKIO,
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+ "io.weight",
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+ value);
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+}
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+
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+
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+static int
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+virCgroupV2GetBlkioWeight(virCgroupPtr group,
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+ unsigned int *weight)
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+{
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+ VIR_AUTOFREE(char *) value = NULL;
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+ char *tmp;
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+
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+ if (virCgroupGetValueStr(group, VIR_CGROUP_CONTROLLER_BLKIO,
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+ "io.weight", &value) < 0) {
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+ return -1;
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+ }
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+
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+ if (!(tmp = strstr(value, "default "))) {
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+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
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+ _("Cannot find default io weight."));
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+ return -1;
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+ }
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+ tmp += strlen("default ");
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+
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+ if (virStrToLong_ui(tmp, NULL, 10, weight) < 0) {
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+ virReportError(VIR_ERR_INTERNAL_ERROR,
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+ _("Unable to parse '%s' as an integer"),
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+ tmp);
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+ return -1;
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+ }
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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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@@ -542,6 +588,9 @@ virCgroupBackend virCgroupV2Backend = {
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.hasEmptyTasks = virCgroupV2HasEmptyTasks,
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.bindMount = virCgroupV2BindMount,
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.setOwner = virCgroupV2SetOwner,
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+
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+ .setBlkioWeight = virCgroupV2SetBlkioWeight,
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+ .getBlkioWeight = virCgroupV2GetBlkioWeight,
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};
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--
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2.22.0
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