[libvirt] [PATCH 2/6] util: Add virNumaGetHostNodeset
That function tries its best to create a bitmap of host NUMA nodes.
Signed-off-by: Martin Kletzander <mkletzan(a)redhat.com>
---
src/libvirt_private.syms | 1 +
src/util/virnuma.c | 28 ++++++++++++++++++++++++++++
src/util/virnuma.h | 1 +
3 files changed, 30 insertions(+)
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 60979f8..b21f5fb 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -1748,6 +1748,7 @@ virNodeSuspendGetTargetMask;
# util/virnuma.h
virNumaGetAutoPlacementAdvice;
virNumaGetDistances;
+virNumaGetHostNodeset;
virNumaGetMaxNode;
virNumaGetNodeMemory;
virNumaGetPageInfo;
diff --git a/src/util/virnuma.c b/src/util/virnuma.c
index b8d76f4..86564d4 100644
--- a/src/util/virnuma.c
+++ b/src/util/virnuma.c
@@ -983,3 +983,31 @@ virNumaNodesetIsAvailable(virBitmapPtr nodeset)
}
return true;
}
+
+virBitmapPtr
+virNumaGetHostNodeset(void)
+{
+ int maxnode = virNumaGetMaxNode();
+ size_t i = 0;
+ virBitmapPtr nodeset = NULL;
+
+ if (maxnode < 0)
+ return NULL;
+
+ if (!(nodeset = virBitmapNew(maxnode + 1)))
+ return NULL;
+
+ for (i = 0; i <= maxnode; i++) {
+ if (!virNumaNodeIsAvailable(i))
+ continue;
+
+ if (virBitmapSetBit(nodeset, i) < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("Problem setting bit in bitmap"));
+ virBitmapFree(nodeset);
+ return NULL;
+ }
+ }
+
+ return nodeset;
+}
diff --git a/src/util/virnuma.h b/src/util/virnuma.h
index 09034a2..1f3c0ad 100644
--- a/src/util/virnuma.h
+++ b/src/util/virnuma.h
@@ -33,6 +33,7 @@ char *virNumaGetAutoPlacementAdvice(unsigned short vcups,
int virNumaSetupMemoryPolicy(virDomainNumatuneMemMode mode,
virBitmapPtr nodeset);
+virBitmapPtr virNumaGetHostNodeset(void);
bool virNumaNodesetIsAvailable(virBitmapPtr nodeset);
bool virNumaIsAvailable(void);
int virNumaGetMaxNode(void);
--
2.2.0