[libvirt] [PATCH v1 06/26] numa_conf: add virDomainNumaNodesDistancesAreBeingSet() helper

[Daniel Henrique Barboza]

Next patch will validate QEMU_CAPS_NUMA_DIST in a new qemu_domain.c
function. The code to verify if a NUMA node distance is being
set will still be needed in qemuBuildNumaArgStr() though.

To avoid code repetition, let's put this logic in a helper to be
used in qemuBuildNumaArgStr() and in the new function.

Signed-off-by: Daniel Henrique Barboza <danielhb413 at gmail.com>
---
 src/conf/numa_conf.c     | 19 +++++++++++++++++++
 src/conf/numa_conf.h     |  2 ++
 src/libvirt_private.syms |  1 +
 src/qemu/qemu_command.c  | 15 +--------------
 4 files changed, 23 insertions(+), 14 deletions(-)

diff --git a/src/conf/numa_conf.c b/src/conf/numa_conf.c
index 4bc22ec7d9..6f1257fd8e 100644
--- a/src/conf/numa_conf.c
+++ b/src/conf/numa_conf.c
@@ -1188,6 +1188,25 @@ virDomainNumaNodeDistanceIsUsingDefaults(virDomainNumaPtr numa,
 }
 
 
+bool
+virDomainNumaNodesDistancesAreBeingSet(virDomainNumaPtr numa)
+{
+    size_t ncells = virDomainNumaGetNodeCount(numa);
+    size_t i, j;
+
+    for (i = 0; i < ncells; i++) {
+        for (j = 0; j < ncells; j++) {
+            if (virDomainNumaNodeDistanceIsUsingDefaults(numa, i, j))
+                continue;
+
+            return true;
+        }
+    }
+
+    return false;
+}
+
+
 size_t
 virDomainNumaGetNodeDistance(virDomainNumaPtr numa,
                              size_t node,
diff --git a/src/conf/numa_conf.h b/src/conf/numa_conf.h
index e76a09c20c..b1b8e3274d 100644
--- a/src/conf/numa_conf.h
+++ b/src/conf/numa_conf.h
@@ -89,6 +89,8 @@ bool virDomainNumaNodeDistanceIsUsingDefaults(virDomainNumaPtr numa,
                                               size_t node,
                                               size_t sibling)
     ATTRIBUTE_NONNULL(1);
+bool virDomainNumaNodesDistancesAreBeingSet(virDomainNumaPtr numa)
+    ATTRIBUTE_NONNULL(1);
 size_t virDomainNumaGetNodeDistance(virDomainNumaPtr numa,
                                     size_t node,
                                     size_t sibling)
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 5da5307fa3..df41eb3d16 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -812,6 +812,7 @@ virDomainNumaGetNodeMemoryAccessMode;
 virDomainNumaGetNodeMemorySize;
 virDomainNumaNew;
 virDomainNumaNodeDistanceIsUsingDefaults;
+virDomainNumaNodesDistancesAreBeingSet;
 virDomainNumaSetNodeCount;
 virDomainNumaSetNodeCpumask;
 virDomainNumaSetNodeDistance;
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 37339d6f0d..7849607b16 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -7443,7 +7443,6 @@ qemuBuildNumaArgStr(virQEMUDriverConfigPtr cfg,
     int ret = -1;
     size_t ncells = virDomainNumaGetNodeCount(def->numa);
     const long system_page_size = virGetSystemPageSizeKB();
-    bool numa_distances = false;
 
     if (virDomainNumatuneHasPerNodeBinding(def->numa) &&
         !(virQEMUCapsGet(qemuCaps, QEMU_CAPS_OBJECT_MEMORY_RAM) ||
@@ -7537,19 +7536,7 @@ qemuBuildNumaArgStr(virQEMUDriverConfigPtr cfg,
     /* If NUMA node distance is specified for at least one pair
      * of nodes, we have to specify all the distances. Even
      * though they might be the default ones. */
-    for (i = 0; i < ncells; i++) {
-        for (j = 0; j < ncells; j++) {
-            if (virDomainNumaNodeDistanceIsUsingDefaults(def->numa, i, j))
-                continue;
-
-            numa_distances = true;
-            break;
-        }
-        if (numa_distances)
-            break;
-    }
-
-    if (numa_distances) {
+    if (virDomainNumaNodesDistancesAreBeingSet(def->numa)) {
         if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_NUMA_DIST)) {
             virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
                            _("setting NUMA distances is not "
-- 
2.23.0