[libvirt] [PATCH v2 04/12] qemu: Introduce qemuDomainSetBlockIoTuneSetDefaults

[John Ferlan]

Create a helper to set the bytes/iops iotune default values based on
the current qemu setting

Signed-off-by: John Ferlan <jferlan at redhat.com>
---
 src/qemu/qemu_driver.c | 66 ++++++++++++++++++++++++++++++--------------------
 1 file changed, 40 insertions(+), 26 deletions(-)

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 78e917e..fcce3f0 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -17286,6 +17286,43 @@ qemuDomainOpenGraphicsFD(virDomainPtr dom,
     return ret;
 }
 
+
+/* If the user didn't specify bytes limits, inherit previous values;
+ * likewise if the user didn't specify iops limits.  */
+static void
+qemuDomainSetBlockIoTuneSetDefaults(virDomainBlockIoTuneInfoPtr newinfo,
+                                    virDomainBlockIoTuneInfoPtr oldinfo,
+                                    bool set_bytes,
+                                    bool set_iops,
+                                    bool set_bytes_max,
+                                    bool set_iops_max,
+                                    bool set_size_iops)
+{
+    if (!set_bytes) {
+        newinfo->total_bytes_sec = oldinfo->total_bytes_sec;
+        newinfo->read_bytes_sec = oldinfo->read_bytes_sec;
+        newinfo->write_bytes_sec = oldinfo->write_bytes_sec;
+    }
+    if (!set_bytes_max) {
+        newinfo->total_bytes_sec_max = oldinfo->total_bytes_sec_max;
+        newinfo->read_bytes_sec_max = oldinfo->read_bytes_sec_max;
+        newinfo->write_bytes_sec_max = oldinfo->write_bytes_sec_max;
+    }
+    if (!set_iops) {
+        newinfo->total_iops_sec = oldinfo->total_iops_sec;
+        newinfo->read_iops_sec = oldinfo->read_iops_sec;
+        newinfo->write_iops_sec = oldinfo->write_iops_sec;
+    }
+    if (!set_iops_max) {
+        newinfo->total_iops_sec_max = oldinfo->total_iops_sec_max;
+        newinfo->read_iops_sec_max = oldinfo->read_iops_sec_max;
+        newinfo->write_iops_sec_max = oldinfo->write_iops_sec_max;
+    }
+    if (!set_size_iops)
+        newinfo->size_iops_sec = oldinfo->size_iops_sec;
+}
+
+
 static int
 qemuDomainSetBlockIoTune(virDomainPtr dom,
                          const char *path,
@@ -17473,32 +17510,9 @@ qemuDomainSetBlockIoTune(virDomainPtr dom,
         if (!(device = qemuAliasFromDisk(disk)))
             goto endjob;
 
-        /* If the user didn't specify bytes limits, inherit previous
-         * values; likewise if the user didn't specify iops
-         * limits.  */
-        oldinfo = &disk->blkdeviotune;
-        if (!set_bytes) {
-            info.total_bytes_sec = oldinfo->total_bytes_sec;
-            info.read_bytes_sec = oldinfo->read_bytes_sec;
-            info.write_bytes_sec = oldinfo->write_bytes_sec;
-        }
-        if (!set_bytes_max) {
-            info.total_bytes_sec_max = oldinfo->total_bytes_sec_max;
-            info.read_bytes_sec_max = oldinfo->read_bytes_sec_max;
-            info.write_bytes_sec_max = oldinfo->write_bytes_sec_max;
-        }
-        if (!set_iops) {
-            info.total_iops_sec = oldinfo->total_iops_sec;
-            info.read_iops_sec = oldinfo->read_iops_sec;
-            info.write_iops_sec = oldinfo->write_iops_sec;
-        }
-        if (!set_iops_max) {
-            info.total_iops_sec_max = oldinfo->total_iops_sec_max;
-            info.read_iops_sec_max = oldinfo->read_iops_sec_max;
-            info.write_iops_sec_max = oldinfo->write_iops_sec_max;
-        }
-        if (!set_size_iops)
-            info.size_iops_sec = oldinfo->size_iops_sec;
+        qemuDomainSetBlockIoTuneSetDefaults(&info, &disk->blkdeviotune,
+                                            set_bytes, set_iops, set_bytes_max,
+                                            set_iops_max, set_size_iops);
 
 #define CHECK_MAX(val)                                                  \
         do {                                                            \
-- 
2.7.4