Re: [libvirt] [PATCH 24/47] vircgroup: extract virCgroupV1(Set|Get)BlkioDeviceWeight

Signed-off-by: Pavel Hrdina <phrdina(a)redhat.com&gt;

--- src/util/vircgroup.c | 36 +++----------------------- src/util/vircgroupbackend.h | 12 +++++++++ src/util/vircgrouppriv.h | 6 +++++ src/util/vircgroupv1.c | 50 +++++++++++++++++++++++++++++++++++++ 4 files changed, 71 insertions(+), 33 deletions(-) diff --git a/src/util/vircgroup.c b/src/util/vircgroup.c index 0d93860df6..465d540bb2 100644 --- a/src/util/vircgroup.c +++ b/src/util/vircgroup.c @@ -500,7 +500,7 @@ virCgroupGetValueStr(virCgroupPtr group, } -static int +int virCgroupGetValueForBlkDev(virCgroupPtr group, int controller, const char *key, @@ -1503,19 +1503,7 @@ virCgroupSetBlkioDeviceWeight(virCgroupPtr group, const char *path, unsigned int weight) { - VIR_AUTOFREE(char *) str = NULL; - VIR_AUTOFREE(char *) blkstr = NULL; - - if (!(blkstr = virCgroupGetBlockDevString(path))) - return -1; - - if (virAsprintf(&str, "%s%d", blkstr, weight) < 0) - return -1; - - return virCgroupSetValueStr(group, - VIR_CGROUP_CONTROLLER_BLKIO, - "blkio.weight_device", - str); + VIR_CGROUP_BACKEND_CALL(group, setBlkioDeviceWeight, -1, path, weight); } /** @@ -1667,25 +1655,7 @@ virCgroupGetBlkioDeviceWeight(virCgroupPtr group, const char *path, unsigned int *weight) { - VIR_AUTOFREE(char *) str = NULL; - - if (virCgroupGetValueForBlkDev(group, - VIR_CGROUP_CONTROLLER_BLKIO, - "blkio.weight_device", - path, - &str) < 0) - return -1; - - if (!str) { - *weight = 0; - } else if (virStrToLong_ui(str, NULL, 10, weight) < 0) { - virReportError(VIR_ERR_INTERNAL_ERROR, - _("Unable to parse '%s' as an integer"), - str); - return -1; - } - - return 0; + VIR_CGROUP_BACKEND_CALL(group, getBlkioDeviceWeight, -1, path, weight); } diff --git a/src/util/vircgroupbackend.h b/src/util/vircgroupbackend.h index bd78c5b937..a84417ddb7 100644 --- a/src/util/vircgroupbackend.h +++ b/src/util/vircgroupbackend.h @@ -152,6 +152,16 @@ typedef int long long *requests_read, long long *requests_write); +typedef int +(*virCgroupSetBlkioDeviceWeightCB)(virCgroupPtr group, + const char *path, + unsigned int weight); + +typedef int +(*virCgroupGetBlkioDeviceWeightCB)(virCgroupPtr group, + const char *path, + unsigned int *weight); + struct _virCgroupBackend { virCgroupBackendType type; @@ -180,6 +190,8 @@ struct _virCgroupBackend { virCgroupGetBlkioWeightCB getBlkioWeight; virCgroupGetBlkioIoServicedCB getBlkioIoServiced; virCgroupGetBlkioIoDeviceServicedCB getBlkioIoDeviceServiced; + virCgroupSetBlkioDeviceWeightCB setBlkioDeviceWeight; + virCgroupGetBlkioDeviceWeightCB getBlkioDeviceWeight; }; typedef struct _virCgroupBackend virCgroupBackend; typedef virCgroupBackend *virCgroupBackendPtr; diff --git a/src/util/vircgrouppriv.h b/src/util/vircgrouppriv.h index 525c288a9a..3a968c1ce2 100644 --- a/src/util/vircgrouppriv.h +++ b/src/util/vircgrouppriv.h @@ -82,6 +82,12 @@ int virCgroupPartitionEscape(char **path); char *virCgroupGetBlockDevString(const char *path); +int virCgroupGetValueForBlkDev(virCgroupPtr group, + int controller, + const char *key, + const char *path, + char **value); + int virCgroupNewPartition(const char *path, bool create, int controllers, diff --git a/src/util/vircgroupv1.c b/src/util/vircgroupv1.c index 206318d436..b627a9d516 100644 --- a/src/util/vircgroupv1.c +++ b/src/util/vircgroupv1.c @@ -1137,6 +1137,54 @@ virCgroupV1GetBlkioIoDeviceServiced(virCgroupPtr group, } +static int +virCgroupV1SetBlkioDeviceWeight(virCgroupPtr group, + const char *path, + unsigned int weight) +{ + VIR_AUTOFREE(char *) str = NULL; + VIR_AUTOFREE(char *) blkstr = NULL; + + if (!(blkstr = virCgroupGetBlockDevString(path))) + return -1; + + if (virAsprintf(&str, "%s%d", blkstr, weight) < 0) + return -1; + + return virCgroupSetValueStr(group, + VIR_CGROUP_CONTROLLER_BLKIO, + "blkio.weight_device", + str); +} + + +static int +virCgroupV1GetBlkioDeviceWeight(virCgroupPtr group, + const char *path, + unsigned int *weight) +{ + VIR_AUTOFREE(char *) str = NULL; + + if (virCgroupGetValueForBlkDev(group, + VIR_CGROUP_CONTROLLER_BLKIO, + "blkio.weight_device", + path, + &str) < 0) + return -1; + + if (!str) { + *weight = 0; + } else if (virStrToLong_ui(str, NULL, 10, weight) < 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, @@ -1163,6 +1211,8 @@ virCgroupBackend virCgroupV1Backend = { .getBlkioWeight = virCgroupV1GetBlkioWeight, .getBlkioIoServiced = virCgroupV1GetBlkioIoServiced, .getBlkioIoDeviceServiced = virCgroupV1GetBlkioIoDeviceServiced, + .setBlkioDeviceWeight = virCgroupV1SetBlkioDeviceWeight, + .getBlkioDeviceWeight = virCgroupV1GetBlkioDeviceWeight, }; -- 2.17.1 -- libvir-list mailing list libvir-list(a)redhat.com https://www.redhat.com/mailman/listinfo/libvir-list