[libvirt] [PATCH 14/34] qemu: domain: Prepare qemuDomainDetectVcpuPids for reuse

[Peter Krempa]

Free the old vcpupids array in case when this function is called again
during the run of the VM. It will be later reused in the vCPU hotplug
code.
---
 src/qemu/qemu_domain.c | 17 +++++++----------
 1 file changed, 7 insertions(+), 10 deletions(-)

diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 1ea1cd3..a6fb232 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -4275,7 +4275,7 @@ qemuDomainDetectVcpuPids(virQEMUDriverPtr driver,
                          int asyncJob)
 {
     pid_t *cpupids = NULL;
-    int ncpupids;
+    int ncpupids = 0;
     qemuDomainObjPrivatePtr priv = vm->privateData;

     /*
@@ -4306,11 +4306,8 @@ qemuDomainDetectVcpuPids(virQEMUDriverPtr driver,
      * Just disable CPU pinning with TCG until someone wants
      * to try to do this hard work.
      */
-    if (vm->def->virtType == VIR_DOMAIN_VIRT_QEMU) {
-        priv->nvcpupids = 0;
-        priv->vcpupids = NULL;
-        return 0;
-    }
+    if (vm->def->virtType == VIR_DOMAIN_VIRT_QEMU)
+        goto done;

     if (qemuDomainObjEnterMonitorAsync(driver, vm, asyncJob) < 0)
         return -1;
@@ -4322,10 +4319,8 @@ qemuDomainDetectVcpuPids(virQEMUDriverPtr driver,
      * support this command */
     if (ncpupids <= 0) {
         virResetLastError();
-
-        priv->nvcpupids = 0;
-        priv->vcpupids = NULL;
-        return 0;
+        ncpupids = 0;
+        goto done;
     }

     if (ncpupids != virDomainDefGetVcpus(vm->def)) {
@@ -4337,6 +4332,8 @@ qemuDomainDetectVcpuPids(virQEMUDriverPtr driver,
         return -1;
     }

+ done:
+    VIR_FREE(priv->vcpupids);
     priv->nvcpupids = ncpupids;
     priv->vcpupids = cpupids;
     return 0;
-- 
2.6.2