[libvirt] [PATCH 28/47] vircgroup: extract virCgroupV1(Set|Get)BlkioDeviceWriteBps

[Pavel Hrdina]

Signed-off-by: Pavel Hrdina <phrdina at redhat.com>
---
 src/util/vircgroup.c        | 34 ++-----------------------
 src/util/vircgroupbackend.h | 12 +++++++++
 src/util/vircgroupv1.c      | 50 +++++++++++++++++++++++++++++++++++++
 3 files changed, 64 insertions(+), 32 deletions(-)

diff --git a/src/util/vircgroup.c b/src/util/vircgroup.c
index 08b8387fba..ab50342dbb 100644
--- a/src/util/vircgroup.c
+++ b/src/util/vircgroup.c
@@ -1437,19 +1437,7 @@ virCgroupSetBlkioDeviceWriteBps(virCgroupPtr group,
                                 const char *path,
                                 unsigned long long wbps)
 {
-    VIR_AUTOFREE(char *) str = NULL;
-    VIR_AUTOFREE(char *) blkstr = NULL;
-
-    if (!(blkstr = virCgroupGetBlockDevString(path)))
-        return -1;
-
-    if (virAsprintf(&str, "%s%llu", blkstr, wbps) < 0)
-        return -1;
-
-    return virCgroupSetValueStr(group,
-                               VIR_CGROUP_CONTROLLER_BLKIO,
-                               "blkio.throttle.write_bps_device",
-                               str);
+    VIR_CGROUP_BACKEND_CALL(group, setBlkioDeviceWriteBps, -1, path, wbps);
 }
 
 
@@ -1531,25 +1519,7 @@ virCgroupGetBlkioDeviceWriteBps(virCgroupPtr group,
                                 const char *path,
                                 unsigned long long *wbps)
 {
-    VIR_AUTOFREE(char *) str = NULL;
-
-    if (virCgroupGetValueForBlkDev(group,
-                                   VIR_CGROUP_CONTROLLER_BLKIO,
-                                   "blkio.throttle.write_bps_device",
-                                   path,
-                                   &str) < 0)
-        return -1;
-
-    if (!str) {
-        *wbps = 0;
-    } else if (virStrToLong_ull(str, NULL, 10, wbps) < 0) {
-        virReportError(VIR_ERR_INTERNAL_ERROR,
-                       _("Unable to parse '%s' as an integer"),
-                       str);
-        return -1;
-    }
-
-    return 0;
+    VIR_CGROUP_BACKEND_CALL(group, getBlkioDeviceWriteBps, -1, path, wbps);
 }
 
 /**
diff --git a/src/util/vircgroupbackend.h b/src/util/vircgroupbackend.h
index 3ec9a95327..b59462d6ab 100644
--- a/src/util/vircgroupbackend.h
+++ b/src/util/vircgroupbackend.h
@@ -192,6 +192,16 @@ typedef int
                                     const char *path,
                                     unsigned long long *rbps);
 
+typedef int
+(*virCgroupSetBlkioDeviceWriteBpsCB)(virCgroupPtr group,
+                                     const char *path,
+                                     unsigned long long wbps);
+
+typedef int
+(*virCgroupGetBlkioDeviceWriteBpsCB)(virCgroupPtr group,
+                                     const char *path,
+                                     unsigned long long *wbps);
+
 struct _virCgroupBackend {
     virCgroupBackendType type;
 
@@ -228,6 +238,8 @@ struct _virCgroupBackend {
     virCgroupGetBlkioDeviceWriteIopsCB getBlkioDeviceWriteIops;
     virCgroupSetBlkioDeviceReadBpsCB setBlkioDeviceReadBps;
     virCgroupGetBlkioDeviceReadBpsCB getBlkioDeviceReadBps;
+    virCgroupSetBlkioDeviceWriteBpsCB setBlkioDeviceWriteBps;
+    virCgroupGetBlkioDeviceWriteBpsCB getBlkioDeviceWriteBps;
 };
 typedef struct _virCgroupBackend virCgroupBackend;
 typedef virCgroupBackend *virCgroupBackendPtr;
diff --git a/src/util/vircgroupv1.c b/src/util/vircgroupv1.c
index 2c19e6147a..4f6d20e31f 100644
--- a/src/util/vircgroupv1.c
+++ b/src/util/vircgroupv1.c
@@ -1329,6 +1329,54 @@ virCgroupV1GetBlkioDeviceReadBps(virCgroupPtr group,
 }
 
 
+static int
+virCgroupV1SetBlkioDeviceWriteBps(virCgroupPtr group,
+                                  const char *path,
+                                  unsigned long long wbps)
+{
+    VIR_AUTOFREE(char *) str = NULL;
+    VIR_AUTOFREE(char *) blkstr = NULL;
+
+    if (!(blkstr = virCgroupGetBlockDevString(path)))
+        return -1;
+
+    if (virAsprintf(&str, "%s%llu", blkstr, wbps) < 0)
+        return -1;
+
+    return virCgroupSetValueStr(group,
+                                VIR_CGROUP_CONTROLLER_BLKIO,
+                                "blkio.throttle.write_bps_device",
+                                str);
+}
+
+
+static int
+virCgroupV1GetBlkioDeviceWriteBps(virCgroupPtr group,
+                                  const char *path,
+                                  unsigned long long *wbps)
+{
+    VIR_AUTOFREE(char *) str = NULL;
+
+    if (virCgroupGetValueForBlkDev(group,
+                                   VIR_CGROUP_CONTROLLER_BLKIO,
+                                   "blkio.throttle.write_bps_device",
+                                   path,
+                                   &str) < 0)
+        return -1;
+
+    if (!str) {
+        *wbps = 0;
+    } else if (virStrToLong_ull(str, NULL, 10, wbps) < 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,
 
@@ -1363,6 +1411,8 @@ virCgroupBackend virCgroupV1Backend = {
     .getBlkioDeviceWriteIops = virCgroupV1GetBlkioDeviceWriteIops,
     .setBlkioDeviceReadBps = virCgroupV1SetBlkioDeviceReadBps,
     .getBlkioDeviceReadBps = virCgroupV1GetBlkioDeviceReadBps,
+    .setBlkioDeviceWriteBps = virCgroupV1SetBlkioDeviceWriteBps,
+    .getBlkioDeviceWriteBps = virCgroupV1GetBlkioDeviceWriteBps,
 };
 
 
-- 
2.17.1