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tools/kvm_stat: add '-f help' to get the available event list

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Signed-off-by: Lin Ma <lma@suse.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Lin Ma 2017-07-25 19:05:54 +08:00 committed by Paolo Bonzini
parent efcb521943
commit 67fbcd62f5
1 changed files with 14 additions and 2 deletions
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16
tools/kvm/kvm_stat/kvm_stat
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@ -474,7 +474,7 @@ class Provider(object):
@staticmethod
def is_field_wanted(fields_filter, field):
"""Indicate whether field is valid according to fields_filter."""
if not fields_filter:
if not fields_filter or fields_filter == "help":
return True
return re.match(fields_filter, field) is not None
@ -1496,7 +1496,8 @@ Press any other key to refresh statistics immediately.
action='store',
default=DEFAULT_REGEX,
dest='fields',
help='fields to display (regex)',
help='''fields to display (regex)
"-f help" for a list of available events''',
)
optparser.add_option('-p', '--pid',
action='store',
@ -1559,6 +1560,17 @@ def main():
stats = Stats(options)
if options.fields == "help":
event_list = "\n"
s = stats.get()
for key in s.keys():
if key.find('(') != -1:
key = key[0:key.find('(')]
if event_list.find('\n' + key + '\n') == -1:
event_list += key + '\n'
sys.stdout.write(event_list)
return ""
if options.log:
log(stats)
elif not options.once: