forked from rpms/libvirt
151 lines
4.8 KiB
Diff
151 lines
4.8 KiB
Diff
From 7fae41a63cd97501e3a4bf8fade48949d754f738 Mon Sep 17 00:00:00 2001
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Message-Id: <7fae41a63cd97501e3a4bf8fade48949d754f738@dist-git>
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From: Pavel Hrdina <phrdina@redhat.com>
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Date: Mon, 1 Jul 2019 17:06:41 +0200
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Subject: [PATCH] vircgroup: extract virCgroupV1(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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Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
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Reviewed-by: Ján Tomko <jtomko@redhat.com>
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Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
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(cherry picked from commit c57b0be0cc200abb21cbe0473d96f447fd37b27d)
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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: <23b514919f71ed2a44c04d7f62a031c4edc14365.1561993100.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/vircgroup.c | 14 ++------------
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src/util/vircgroupbackend.h | 20 ++++++++++++++++++++
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src/util/vircgroupv1.c | 29 +++++++++++++++++++++++++++++
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3 files changed, 51 insertions(+), 12 deletions(-)
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diff --git a/src/util/vircgroup.c b/src/util/vircgroup.c
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index e57aecb08a..d2ffa8aefe 100644
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--- a/src/util/vircgroup.c
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+++ b/src/util/vircgroup.c
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@@ -1510,10 +1510,7 @@ virCgroupGetBlkioIoDeviceServiced(virCgroupPtr group,
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int
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virCgroupSetBlkioWeight(virCgroupPtr group, unsigned int weight)
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{
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- return virCgroupSetValueU64(group,
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- VIR_CGROUP_CONTROLLER_BLKIO,
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- "blkio.weight",
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- weight);
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+ VIR_CGROUP_BACKEND_CALL(group, setBlkioWeight, -1, weight);
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}
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@@ -1528,14 +1525,7 @@ virCgroupSetBlkioWeight(virCgroupPtr group, unsigned int weight)
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int
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virCgroupGetBlkioWeight(virCgroupPtr group, unsigned int *weight)
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{
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- unsigned long long tmp;
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- int ret;
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- ret = virCgroupGetValueU64(group,
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- VIR_CGROUP_CONTROLLER_BLKIO,
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- "blkio.weight", &tmp);
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- if (ret == 0)
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- *weight = tmp;
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- return ret;
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+ VIR_CGROUP_BACKEND_CALL(group, getBlkioWeight, -1, weight);
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}
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/**
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diff --git a/src/util/vircgroupbackend.h b/src/util/vircgroupbackend.h
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index 74af796c2f..ccce65f1e2 100644
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--- a/src/util/vircgroupbackend.h
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+++ b/src/util/vircgroupbackend.h
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@@ -137,6 +137,14 @@ typedef int
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gid_t gid,
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int controllers);
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+typedef int
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+(*virCgroupSetBlkioWeightCB)(virCgroupPtr group,
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+ unsigned int weight);
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+
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+typedef int
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+(*virCgroupGetBlkioWeightCB)(virCgroupPtr group,
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+ unsigned int *weight);
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+
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struct _virCgroupBackend {
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virCgroupBackendType type;
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@@ -159,6 +167,10 @@ struct _virCgroupBackend {
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virCgroupHasEmptyTasksCB hasEmptyTasks;
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virCgroupBindMountCB bindMount;
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virCgroupSetOwnerCB setOwner;
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+
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+ /* Optional cgroup controller specific callbacks. */
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+ virCgroupSetBlkioWeightCB setBlkioWeight;
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+ virCgroupGetBlkioWeightCB getBlkioWeight;
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};
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typedef struct _virCgroupBackend virCgroupBackend;
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typedef virCgroupBackend *virCgroupBackendPtr;
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@@ -169,4 +181,12 @@ virCgroupBackendRegister(virCgroupBackendPtr backend);
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virCgroupBackendPtr *
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virCgroupBackendGetAll(void);
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+# define VIR_CGROUP_BACKEND_CALL(group, func, ret, ...) \
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+ if (!group->backend->func) { \
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+ virReportError(VIR_ERR_OPERATION_UNSUPPORTED, \
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+ _("operation '%s' not supported"), #func); \
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+ return ret; \
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+ } \
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+ return group->backend->func(group, ##__VA_ARGS__);
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+
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#endif /* __VIR_CGROUP_BACKEND_H__ */
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diff --git a/src/util/vircgroupv1.c b/src/util/vircgroupv1.c
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index c1e2583912..d67b3164ce 100644
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--- a/src/util/vircgroupv1.c
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+++ b/src/util/vircgroupv1.c
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@@ -929,6 +929,32 @@ virCgroupV1SetOwner(virCgroupPtr cgroup,
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}
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+static int
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+virCgroupV1SetBlkioWeight(virCgroupPtr group,
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+ unsigned int weight)
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+{
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+ return virCgroupSetValueU64(group,
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+ VIR_CGROUP_CONTROLLER_BLKIO,
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+ "blkio.weight",
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+ weight);
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+}
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+
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+
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+static int
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+virCgroupV1GetBlkioWeight(virCgroupPtr group,
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+ unsigned int *weight)
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+{
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+ unsigned long long tmp;
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+ int ret;
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+ ret = virCgroupGetValueU64(group,
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+ VIR_CGROUP_CONTROLLER_BLKIO,
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+ "blkio.weight", &tmp);
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+ if (ret == 0)
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+ *weight = tmp;
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+ return ret;
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+}
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+
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+
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virCgroupBackend virCgroupV1Backend = {
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.type = VIR_CGROUP_BACKEND_TYPE_V1,
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@@ -950,6 +976,9 @@ virCgroupBackend virCgroupV1Backend = {
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.hasEmptyTasks = virCgroupV1HasEmptyTasks,
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.bindMount = virCgroupV1BindMount,
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.setOwner = virCgroupV1SetOwner,
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+
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+ .setBlkioWeight = virCgroupV1SetBlkioWeight,
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+ .getBlkioWeight = virCgroupV1GetBlkioWeight,
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};
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--
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2.22.0
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