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vircgroup: extract virCgroupV1(Set|Get)BlkioDeviceWriteIops

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Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
This commit is contained in:
Pavel Hrdina 2018-09-24 12:20:50 +02:00
parent dfaf5c6de1
commit 2edd0bcda6
3 changed files with 64 additions and 32 deletions
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34
src/util/vircgroup.c
View File

@ -1398,19 +1398,7 @@ virCgroupSetBlkioDeviceWriteIops(virCgroupPtr group,
const char *path,
unsigned int wiops)
{
VIR_AUTOFREE(char *) str = NULL;
VIR_AUTOFREE(char *) blkstr = NULL;
if (!(blkstr = virCgroupGetBlockDevString(path)))
return -1;
if (virAsprintf(&str, "%s%u", blkstr, wiops) < 0)
return -1;
return virCgroupSetValueStr(group,
VIR_CGROUP_CONTROLLER_BLKIO,
"blkio.throttle.write_iops_device",
str);
VIR_CGROUP_BACKEND_CALL(group, setBlkioDeviceWriteIops, -1, path, wiops);
}
@ -1517,25 +1505,7 @@ virCgroupGetBlkioDeviceWriteIops(virCgroupPtr group,
const char *path,
unsigned int *wiops)
{
VIR_AUTOFREE(char *) str = NULL;
if (virCgroupGetValueForBlkDev(group,
VIR_CGROUP_CONTROLLER_BLKIO,
"blkio.throttle.write_iops_device",
path,
&str) < 0)
return -1;
if (!str) {
*wiops = 0;
} else if (virStrToLong_ui(str, NULL, 10, wiops) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Unable to parse '%s' as an integer"),
str);
return -1;
}
return 0;
VIR_CGROUP_BACKEND_CALL(group, getBlkioDeviceWriteIops, -1, path, wiops);
}
/**

12
src/util/vircgroupbackend.h
View File

@ -180,6 +180,16 @@ typedef int
const char *path,
unsigned int *riops);
typedef int
(*virCgroupSetBlkioDeviceWriteIopsCB)(virCgroupPtr group,
const char *path,
unsigned int wiops);
typedef int
(*virCgroupGetBlkioDeviceWriteIopsCB)(virCgroupPtr group,
const char *path,
unsigned int *wiops);
struct _virCgroupBackend {
virCgroupBackendType type;
@ -212,6 +222,8 @@ struct _virCgroupBackend {
virCgroupGetBlkioDeviceWeightCB getBlkioDeviceWeight;
virCgroupSetBlkioDeviceReadIopsCB setBlkioDeviceReadIops;
virCgroupGetBlkioDeviceReadIopsCB getBlkioDeviceReadIops;
virCgroupSetBlkioDeviceWriteIopsCB setBlkioDeviceWriteIops;
virCgroupGetBlkioDeviceWriteIopsCB getBlkioDeviceWriteIops;
};
typedef struct _virCgroupBackend virCgroupBackend;
typedef virCgroupBackend *virCgroupBackendPtr;

50
src/util/vircgroupv1.c
View File

@ -1233,6 +1233,54 @@ virCgroupV1GetBlkioDeviceReadIops(virCgroupPtr group,
}
static int
virCgroupV1SetBlkioDeviceWriteIops(virCgroupPtr group,
const char *path,
unsigned int wiops)
{
VIR_AUTOFREE(char *) str = NULL;
VIR_AUTOFREE(char *) blkstr = NULL;
if (!(blkstr = virCgroupGetBlockDevString(path)))
return -1;
if (virAsprintf(&str, "%s%u", blkstr, wiops) < 0)
return -1;
return virCgroupSetValueStr(group,
VIR_CGROUP_CONTROLLER_BLKIO,
"blkio.throttle.write_iops_device",
str);
}
static int
virCgroupV1GetBlkioDeviceWriteIops(virCgroupPtr group,
const char *path,
unsigned int *wiops)
{
VIR_AUTOFREE(char *) str = NULL;
if (virCgroupGetValueForBlkDev(group,
VIR_CGROUP_CONTROLLER_BLKIO,
"blkio.throttle.write_iops_device",
path,
&str) < 0)
return -1;
if (!str) {
*wiops = 0;
} else if (virStrToLong_ui(str, NULL, 10, wiops) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Unable to parse '%s' as an integer"),
str);
return -1;
}
return 0;
}
virCgroupBackend virCgroupV1Backend = {
.type = VIR_CGROUP_BACKEND_TYPE_V1,
@ -1263,6 +1311,8 @@ virCgroupBackend virCgroupV1Backend = {
.getBlkioDeviceWeight = virCgroupV1GetBlkioDeviceWeight,
.setBlkioDeviceReadIops = virCgroupV1SetBlkioDeviceReadIops,
.getBlkioDeviceReadIops = virCgroupV1GetBlkioDeviceReadIops,
.setBlkioDeviceWriteIops = virCgroupV1SetBlkioDeviceWriteIops,
.getBlkioDeviceWriteIops = virCgroupV1GetBlkioDeviceWriteIops,
};