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tools/kvm_stat: Exempt time-based counters

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The new counters halt_poll_success_ns and halt_poll_fail_ns do not count
events. Instead they provide a time, and mess up our statistics. Therefore,
we should exclude them.
Removal is currently implemented with an exempt list. If more counters like
these appear, we can think about a more general rule like excluding all
fields name "*_ns", in case that's a standing convention.

Signed-off-by: Stefan Raspl <raspl@linux.ibm.com>
Tested-and-reported-by: Christian Borntraeger <borntraeger@de.ibm.com>
Message-Id: <20201208210829.101324-1-raspl@linux.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Stefan Raspl 2020-12-08 22:08:29 +01:00 committed by Paolo Bonzini
parent 34c0f6f269
commit 111d0bda8e
1 changed files with 5 additions and 1 deletions
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6
tools/kvm/kvm_stat/kvm_stat
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@ -742,7 +742,11 @@ class DebugfsProvider(Provider):
The fields are all available KVM debugfs files
"""
return self.walkdir(PATH_DEBUGFS_KVM)[2]
exempt_list = ['halt_poll_fail_ns', 'halt_poll_success_ns']
fields = [field for field in self.walkdir(PATH_DEBUGFS_KVM)[2]
if field not in exempt_list]
return fields
def update_fields(self, fields_filter):
"""Refresh fields, applying fields_filter"""