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, 3 insertions, 0 deletions

diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index ad17f0ad798b..9df1c340ec92 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -12,6 +12,9 @@ struct addr_location;
 struct symbol;
 struct rb_root;
 
+void __perf_session__add_count(struct hist_entry *he,
+                        struct addr_location *al,
+                        u64 count);
 struct hist_entry *__perf_session__add_hist_entry(struct rb_root *hists,
                                                   struct addr_location *al,
                                                   struct symbol *parent,