bd9e853604
Return current hugepage usage and kernel cmdline for static hugepage allocation Change-Id: Ib34b2d7c3da5aacd117b19249be41bb95b91dfcd Closes-Bug: #1734360
53 lines
1.6 KiB
Python
Executable File
53 lines
1.6 KiB
Python
Executable File
#!/usr/bin/python
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#
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# Copyright 2016 Canonical Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import sys
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sys.path.append('hooks')
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import subprocess
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from charmhelpers.core import hookenv
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SYSFS = '/sys'
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KERNELCMD = '/proc/cmdline'
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def hugepages_report():
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'''Action to return current hugepage usage and kernel cmdline for static
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hugepage allocation. Takes no params.
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'''
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outmap = {}
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try:
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devp = "{}/devices/system/node/node*/hugepages/*/*".format(SYSFS)
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outmap['hugepagestats'] = subprocess.check_output(
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"grep -H . {}".format(devp),
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shell=True).decode('UTF-8')
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except subprocess.CalledProcessError as e:
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hookenv.log(e)
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hookenv.action_fail(
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"Getting hugepages report failed: {}".format(e.message)
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)
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with open(KERNELCMD, 'rb') as cmdline:
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try:
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outmap['kernelcmd'] = cmdline.read().strip()
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except IOError as e:
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hookenv.action_fail('Could not read {}: {}'.format(KERNELCMD, e))
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return
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hookenv.action_set(outmap)
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if __name__ == '__main__':
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hugepages_report()
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