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Merge pull request #57 from derkling/cgroups-cosmetics

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Cgroups cosmetics
This commit is contained in:
setrofim 2016-08-31 11:53:19 +01:00 committed by GitHub
commit 0e8fc0d732
1 changed files with 12 additions and 9 deletions
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devlib/module/cgroups.py
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@ -150,16 +150,16 @@ class Controller(object):
raise ValueError('wrong type for "exclude" parameter, ' raise ValueError('wrong type for "exclude" parameter, '
'it must be a str or a list') 'it must be a str or a list')
logging.info('Moving all tasks into %s', dest) logging.debug('Moving all tasks into %s', dest)
# Build list of tasks to exclude # Build list of tasks to exclude
grep_filters = '' grep_filters = ''
for comm in exclude: for comm in exclude:
grep_filters += '-e "{}" '.format(comm) grep_filters += '-e "{}" '.format(comm)
logging.debug('Using grep filter: %s', grep_filters) logging.debug(' using grep filter: %s', grep_filters)
if grep_filters != '': if grep_filters != '':
logging.info('Excluding tasks which name matches:') logging.debug(' excluding tasks which name matches:')
logging.info('%s', ','.join(exclude)) logging.debug(' %s', ', '.join(exclude))
for cgroup in self._cgroups: for cgroup in self._cgroups:
if cgroup != dest: if cgroup != dest:
@ -425,7 +425,7 @@ class CgroupsModule(Module):
def freeze(self, exclude=[], thaw=False): def freeze(self, exclude=[], thaw=False):
""" """
Freeze all tasks while keeping a live console Freeze all user-space tasks but the specified ones
A freezer cgroup is used to stop all the tasks in the target system but A freezer cgroup is used to stop all the tasks in the target system but
the ones which name match one of the path specified by the exclude the ones which name match one of the path specified by the exclude
@ -435,7 +435,10 @@ class CgroupsModule(Module):
the PID of these tasks. the PID of these tasks.
:param exclude: list of commands paths to exclude from freezer :param exclude: list of commands paths to exclude from freezer
:type exlude: list(str) :type exclude: list(str)
:param thaw: if true thaw tasks instead
:type thaw: bool
""" """
# Create Freezer CGroup # Create Freezer CGroup
@ -453,11 +456,11 @@ class CgroupsModule(Module):
# Move all tasks into the freezer group # Move all tasks into the freezer group
freezer.move_all_tasks_to('/DEVLIB_FREEZER', exclude) freezer.move_all_tasks_to('/DEVLIB_FREEZER', exclude)
logging.info("Non freezable tasks:") # Get list of not frozen tasks, which is reported as output
tasks = freezer.tasks('/') tasks = freezer.tasks('/')
for tid in tasks:
logging.info("%5d: %s", tid, tasks[tid])
# Freeze all tasks # Freeze all tasks
freezer_cg.set(state='FROZEN') freezer_cg.set(state='FROZEN')
return tasks