Fix: prevent division by zero in cputop

Signed-off-by: Antoine Busque <abusque@efficios.com>

diff --git a/lttnganalyses/cli/cputop.py b/lttnganalyses/cli/cputop.py
index 28d62b00fb859330ac31f8f8cbb5732dce372367..a2ca9b6610f664fa95ee0d4a3aee2ecb0349fef9 100644 (file)
--- a/lttnganalyses/cli/cputop.py
+++ b/lttnganalyses/cli/cputop.py
@@ -127,6 +127,9 @@ class Cputop(Command):
         cpu_count = len(self.state.cpus)
         usage_percent = 0
 
+        if not cpu_count:
+            return
+
         for cpu in sorted(self._analysis.cpus.values(),
                           key=operator.attrgetter('usage_percent'),
                           reverse=True):