[1/5] selftests/damon: implement a python module for test-purpose DAMON sysfs controls
Commit Message
Implement a python module for DAMON sysfs controls. The module is aimed
to be useful for writing DAMON functionality tests in future.
Nonetheless, this module is only representing a subset of DAMON sysfs
files. Following commits will implement more DAMON sysfs controls.
Signed-off-by: SeongJae Park <sj@kernel.org>
---
tools/testing/selftests/damon/_damon_sysfs.py | 102 ++++++++++++++++++
1 file changed, 102 insertions(+)
create mode 100644 tools/testing/selftests/damon/_damon_sysfs.py
new file mode 100644
@@ -0,0 +1,102 @@
+# SPDX-License-Identifier: GPL-2.0
+
+class DamosAccessPattern:
+ size = None
+ nr_accesses = None
+ age = None
+ scheme = None
+
+ def __init__(self, size=None, nr_accesses=None, age=None):
+ self.size = size
+ self.nr_accesses = nr_accesses
+ self.age = age
+
+ if self.size == None:
+ self.size = [0, 2**64 - 1]
+ if self.nr_accesses == None:
+ self.nr_accesses = [0, 2**64 - 1]
+ if self.age == None:
+ self.age = [0, 2**64 - 1]
+
+class Damos:
+ action = None
+ access_pattern = None
+ # todo: Support quotas, watermarks, stats, tried_regions
+ idx = None
+ context = None
+
+ def __init__(self, action='stat', access_pattern=DamosAccessPattern()):
+ self.action = action
+ self.access_pattern = access_pattern
+ self.access_pattern.scheme = self
+
+class DamonTarget:
+ pid = None
+ # todo: Support target regions if test is made
+ idx = None
+ context = None
+
+ def __init__(self, pid):
+ self.pid = pid
+
+class DamonAttrs:
+ sample_us = None
+ aggr_us = None
+ update_us = None
+ min_nr_regions = None
+ max_nr_regions = None
+ context = None
+
+ def __init__(self, sample_us=5000, aggr_us=100000, update_us=1000000,
+ min_nr_regions=10, max_nr_regions=1000):
+ self.sample_us = sample_us
+ self.aggr_us = aggr_us
+ self.update_us = update_us
+ self.min_nr_regions = min_nr_regions
+ self.max_nr_regions = max_nr_regions
+
+class DamonCtx:
+ ops = None
+ monitoring_attrs = None
+ targets = None
+ schemes = None
+ kdamond = None
+ idx = None
+
+ def __init__(self, ops='paddr', monitoring_attrs=DamonAttrs(), targets=[],
+ schemes=[]):
+ self.ops = ops
+ self.monitoring_attrs = monitoring_attrs
+ self.monitoring_attrs.context = self
+
+ self.targets = targets
+ for idx, target in enumerate(self.targets):
+ target.idx = idx
+ target.context = self
+
+ self.schemes = schemes
+ for idx, scheme in enumerate(self.schemes):
+ scheme.idx = idx
+ scheme.context = self
+
+class Kdamond:
+ state = None
+ pid = None
+ contexts = None
+ idx = None # index of this kdamond between siblings
+ kdamonds = None # parent
+
+ def __init__(self, contexts=[]):
+ self.contexts = contexts
+ for idx, context in enumerate(self.contexts):
+ context.idx = idx
+ context.kdamond = self
+
+class Kdamonds:
+ kdamonds = []
+
+ def __init__(self, kdamonds=[]):
+ self.kdamonds = kdamonds
+ for idx, kdamond in enumerate(self.kdamonds):
+ kdamond.idx = idx
+ kdamond.kdamonds = self