[libvirt] [PATCH] Cope with missing /sys/devices/system/cpu/cpu0/topology files
From: "Daniel P. Berrange" <berrange(a)redhat.com>
Not all kernel builds have any entries under the location
/sys/devices/system/cpu/cpu0/topology. We already cope with
that being missing in some cases, but not all. Update the
code which looks for thread_siblings to cope with the missing
file
Signed-off-by: Daniel P. Berrange <berrange(a)redhat.com>
---
src/nodeinfo.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/src/nodeinfo.c b/src/nodeinfo.c
index 415c2e5..72ab394 100644
--- a/src/nodeinfo.c
+++ b/src/nodeinfo.c
@@ -168,6 +168,12 @@ virNodeCountThreadSiblings(const char *dir, unsigned int cpu)
pathfp = fopen(path, "r");
if (pathfp == NULL) {
+ /* If file doesn't exist, then pretend our only
+ * sibling is ourself */
+ if (errno == ENOENT) {
+ VIR_FREE(path);
+ return 1;
+ }
virReportSystemError(errno, _("cannot open %s"), path);
VIR_FREE(path);
return 0;
--
1.8.1.4