[libvirt] [PATCHv2 7/9] virNodeGetCPUMapFlags: Implement support function in nodeinfo
Added an implemention of virNodeGetCPUMapFlags to nodeinfo.c,
(nodeGetCPUMapFlags) which can be used by all drivers for a Linux
hypervisor host.
Signed-off-by: Viktor Mihajlovski <mihajlov(a)linux.vnet.ibm.com>
---
src/libvirt_private.syms | 1 +
src/nodeinfo.c | 49 ++++++++++++++++++++++++++++++++++++++++++++++
src/nodeinfo.h | 6 +++++
3 files changed, 56 insertions(+), 0 deletions(-)
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index fe31bbe..44d5927 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -900,6 +900,7 @@ virNodeDeviceObjUnlock;
# nodeinfo.h
nodeCapsInitNUMA;
nodeGetCPUmap;
+nodeGetCPUMapFlags;
nodeGetCPUStats;
nodeGetCellsFreeMemory;
nodeGetFreeMemory;
diff --git a/src/nodeinfo.c b/src/nodeinfo.c
index c0e60d8..84cf796 100644
--- a/src/nodeinfo.c
+++ b/src/nodeinfo.c
@@ -1203,6 +1203,55 @@ nodeGetMemoryParameters(virConnectPtr conn ATTRIBUTE_UNUSED,
#endif
}
+int nodeGetCPUMapFlags(virConnectPtr conn,
+ unsigned char **cpumap,
+ unsigned int *online,
+ unsigned int flags)
+{
+ virBitmapPtr cpusPresent = NULL;
+ virBitmapPtr cpusOnline = NULL;
+ int maxpresent, maxonline, i;
+ int ret = -1;
+
+ virCheckFlags(0, 1);
+
+ if (!(cpusPresent = nodeGetCPUmap(conn, &maxpresent, "present"))) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("Unable to retrieve 'present' CPU map"));
+ goto cleanup;
+ }
+
+ if (!(cpusOnline = nodeGetCPUmap(conn, &maxonline, "online"))) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("Unable to retrieve 'online' CPU map"));
+ goto cleanup;
+ }
+
+ if (cpumap && VIR_ALLOC_N(*cpumap, VIR_CPU_MAPLEN(maxpresent)) < 0) {
+ virReportOOMError();
+ goto cleanup;
+ }
+
+ if (online)
+ *online = 0;
+
+ i = -1;
+ while ((i=virBitmapNextSetBit(cpusOnline, i)) >= 0) {
+ if (online)
+ (*online)++;
+
+ if (cpumap)
+ VIR_USE_CPU(*cpumap,i);
+ }
+
+ ret = maxpresent + 1;
+
+cleanup:
+ virBitmapFree(cpusPresent);
+ virBitmapFree(cpusOnline);
+ return ret;
+}
+
#if HAVE_NUMACTL
# if LIBNUMA_API_VERSION <= 1
# define NUMA_MAX_N_CPUS 4096
diff --git a/src/nodeinfo.h b/src/nodeinfo.h
index 2eda846..e210e6b 100644
--- a/src/nodeinfo.h
+++ b/src/nodeinfo.h
@@ -59,4 +59,10 @@ int nodeSetMemoryParameters(virConnectPtr conn,
virTypedParameterPtr params,
int nparams,
unsigned int flags);
+
+int nodeGetCPUMapFlags(virConnectPtr conn,
+ unsigned char **cpumap,
+ unsigned int *online,
+ unsigned int flags);
+
#endif /* __VIR_NODEINFO_H__*/
--
1.7.0.4