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| author | Stefan Raspl <stefan.raspl@de.ibm.com> | 2018-02-05 13:59:57 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-02-24 01:43:41 +0100 |
| commit | 3df33a0f34a3883b6696bff8cc8fcda3c7444a62 (patch) | |
| tree | d88cec5c5fde40902b5fdbb6b75ac4c89172b4ec /tools/kvm | |
| parent | tools/kvm_stat: avoid 'is' for equality checks (diff) | |
| download | linux-3df33a0f34a3883b6696bff8cc8fcda3c7444a62.tar.xz linux-3df33a0f34a3883b6696bff8cc8fcda3c7444a62.zip | |
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>
Diffstat (limited to 'tools/kvm')
| -rwxr-xr-x | tools/kvm/kvm_stat/kvm_stat | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/tools/kvm/kvm_stat/kvm_stat b/tools/kvm/kvm_stat/kvm_stat index e3f0becb6632..4e0f282c5289 100755 --- a/tools/kvm/kvm_stat/kvm_stat +++ b/tools/kvm/kvm_stat/kvm_stat @@ -1084,9 +1084,15 @@ class Tui(object): self.screen.clrtobot() stats = self.stats.get(self._display_guests) total = 0. + ctotal = 0. for key, values in stats.items(): if key.find('(') == -1: total += values.value + else: + ctotal += values.value + if total == 0.: + # we don't have any fields, or all non-child events are filtered + total = ctotal if self._sorting == SORT_DEFAULT: def sortkey((_k, v)): |