perf: 'perf kvm' tool for monitoring guest performance from host

Here is the patch of userspace perf tool.

Signed-off-by: Zhang Yanmin <yanmin_zhang@linux.intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index 5bf8ab034466..3967f8f63d0d 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -78,6 +78,7 @@ static struct map *kmaps[MAP__NR_TYPES];
 /* Initialize symbol maps and path of vmlinux */
 static int init_vmlinux(void)
 {
+        struct dso *kernel;
         int ret;
 
         symbol_conf.sort_by_name = true;
@@ -91,8 +92,12 @@ static int init_vmlinux(void)
                 goto out;
         }
 
+        kernel = dso__new_kernel(symbol_conf.vmlinux_name);
+        if (kernel == NULL)
+                die("Failed to create kernel dso.");
+
         map_groups__init(&kmap_groups);
-        ret = map_groups__create_kernel_maps(&kmap_groups, kmaps);
+        ret = __map_groups__create_kernel_maps(&kmap_groups, kmaps, kernel);
         if (ret < 0)
                 pr_debug("Failed to create kernel maps.\n");