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authorDavid Hunt <david.hunt@intel.com>2017-10-11 17:18:49 +0100
committerFerruh Yigit <ferruh.yigit@intel.com>2017-10-12 00:44:33 +0100
commitdff22404aaadd60dfcc100580f812735493355a7 (patch)
tree651746b046a04a5cbe43e08d92f9102904f26c19 /examples/vm_power_manager
parenta8cb5f65718edeccd2d2f2e8f46b49e23b718a81 (diff)
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examples/vm_power_mgr: add VCPU to PCPU mapping
Signed-off-by: Nemanja Marjanovic <nemanja.marjanovic@intel.com> Signed-off-by: Rory Sexton <rory.sexton@intel.com> Signed-off-by: David Hunt <david.hunt@intel.com> Reviewed-by: Santosh Shukla <santosh.shukla@caviumnetworks.com> Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Diffstat (limited to 'examples/vm_power_manager')
-rw-r--r--examples/vm_power_manager/channel_manager.c67
-rw-r--r--examples/vm_power_manager/channel_manager.h25
2 files changed, 92 insertions, 0 deletions
diff --git a/examples/vm_power_manager/channel_manager.c b/examples/vm_power_manager/channel_manager.c
index e068ae2..ab856bd 100644
--- a/examples/vm_power_manager/channel_manager.c
+++ b/examples/vm_power_manager/channel_manager.c
@@ -574,6 +574,73 @@ set_channel_status(const char *vm_name, unsigned *channel_list,
return num_channels_changed;
}
+void
+get_all_vm(int *num_vm, int *num_vcpu)
+{
+
+ virNodeInfo node_info;
+ virDomainPtr *domptr;
+ uint64_t mask;
+ int i, ii, numVcpus[MAX_VCPUS], cpu, n_vcpus;
+ unsigned int jj;
+ const char *vm_name;
+ unsigned int domain_flags = VIR_CONNECT_LIST_DOMAINS_RUNNING |
+ VIR_CONNECT_LIST_DOMAINS_PERSISTENT;
+ unsigned int domain_flag = VIR_DOMAIN_VCPU_CONFIG;
+
+
+ memset(global_cpumaps, 0, CHANNEL_CMDS_MAX_CPUS*global_maplen);
+ if (virNodeGetInfo(global_vir_conn_ptr, &node_info)) {
+ RTE_LOG(ERR, CHANNEL_MANAGER, "Unable to retrieve node Info\n");
+ return;
+ }
+
+ /* Returns number of pcpus */
+ global_n_host_cpus = (unsigned int)node_info.cpus;
+
+ /* Returns number of active domains */
+ *num_vm = virConnectListAllDomains(global_vir_conn_ptr, &domptr,
+ domain_flags);
+ if (*num_vm <= 0) {
+ RTE_LOG(ERR, CHANNEL_MANAGER, "No Active Domains Running\n");
+ return;
+ }
+
+ for (i = 0; i < *num_vm; i++) {
+
+ /* Get Domain Names */
+ vm_name = virDomainGetName(domptr[i]);
+ lvm_info[i].vm_name = vm_name;
+
+ /* Get Number of Vcpus */
+ numVcpus[i] = virDomainGetVcpusFlags(domptr[i], domain_flag);
+
+ /* Get Number of VCpus & VcpuPinInfo */
+ n_vcpus = virDomainGetVcpuPinInfo(domptr[i],
+ numVcpus[i], global_cpumaps,
+ global_maplen, domain_flag);
+
+ if ((int)n_vcpus > 0) {
+ *num_vcpu = n_vcpus;
+ lvm_info[i].num_cpus = n_vcpus;
+ }
+
+ /* Save pcpu in use by libvirt VMs */
+ for (ii = 0; ii < n_vcpus; ii++) {
+ mask = 0;
+ for (jj = 0; jj < global_n_host_cpus; jj++) {
+ if (VIR_CPU_USABLE(global_cpumaps,
+ global_maplen, ii, jj) > 0) {
+ mask |= 1ULL << jj;
+ }
+ }
+ ITERATIVE_BITMASK_CHECK_64(mask, cpu) {
+ lvm_info[i].pcpus[ii] = cpu;
+ }
+ }
+ }
+}
+
int
get_info_vm(const char *vm_name, struct vm_info *info)
{
diff --git a/examples/vm_power_manager/channel_manager.h b/examples/vm_power_manager/channel_manager.h
index 47c3b9c..358fb8f 100644
--- a/examples/vm_power_manager/channel_manager.h
+++ b/examples/vm_power_manager/channel_manager.h
@@ -66,6 +66,17 @@ struct sockaddr_un _sockaddr_un;
#define UNIX_PATH_MAX sizeof(_sockaddr_un.sun_path)
#endif
+#define MAX_VMS 4
+#define MAX_VCPUS 20
+
+
+struct libvirt_vm_info {
+ const char *vm_name;
+ unsigned int pcpus[MAX_VCPUS];
+ uint8_t num_cpus;
+};
+
+struct libvirt_vm_info lvm_info[MAX_VMS];
/* Communication Channel Status */
enum channel_status { CHANNEL_MGR_CHANNEL_DISCONNECTED = 0,
CHANNEL_MGR_CHANNEL_CONNECTED,
@@ -319,6 +330,20 @@ int set_channel_status(const char *vm_name, unsigned *channel_list,
*/
int get_info_vm(const char *vm_name, struct vm_info *info);
+/**
+ * Populates a table with all domains running and their physical cpu.
+ * All information is gathered through libvirt api.
+ *
+ * @param num_vm
+ * modified to store number of active VMs
+ *
+ * @param num_vcpu
+ modified to store number of vcpus active
+ *
+ * @return
+ * void
+ */
+void get_all_vm(int *num_vm, int *num_vcpu);
#ifdef __cplusplus
}
#endif