tools/kvm_stat: fix drilldown in events-by-guests mode

When displaying debugfs events listed by guests, an attempt to switch to
reporting of stats for individual child trace events results in garbled
output. Reason is that when toggling drilldown, the update of the stats
doesn't honor when events are displayed by guests, as indicated by
Tui._display_guests.
To reproduce, run 'kvm_stat -d' and press 'b' followed by 'x'.

Signed-off-by: Stefan Raspl <raspl@linux.vnet.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/tools/kvm/kvm_stat/kvm_stat b/tools/kvm/kvm_stat/kvm_stat
index 884a74b8ca87436a322a6e64df58e9ab43693109..6347ad5d0d3541b250ba6c8d3af5366dc8a61adf 100755 (executable)
--- a/tools/kvm/kvm_stat/kvm_stat
+++ b/tools/kvm/kvm_stat/kvm_stat
@@ -1360,7 +1360,7 @@ class Tui(object):
                 if char == 'x':
                     self.update_drilldown()
                     # prevents display of current values on next refresh
-                    self.stats.get()
+                    self.stats.get(self._display_guests)
             except KeyboardInterrupt:
                 break
             except curses.error: