tree d88cec5c5fde40902b5fdbb6b75ac4c89172b4ec
parent 369d5a85bb782ecf63c5bae9686c7e6104eea991
author Stefan Raspl <stefan.raspl@de.ibm.com> 1517835597 +0100
committer Paolo Bonzini <pbonzini@redhat.com> 1519433021 +0100

tools/kvm_stat: fix crash when filtering out all non-child trace events

When we apply a filter that will only leave child trace events, we
receive a ZeroDivisionError when calculating the percentages.
In that case, provide percentages based on child events only.
To reproduce, run 'kvm_stat -f .*[\(].*'.

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