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| author | SeongJae Park <sj@kernel.org> | 2024-06-25 21:05:37 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-07-04 05:30:29 +0300 |
| commit | 5ac9adecf0cf07b99d4eeda24a89d27447acd860 (patch) | |
| tree | 7e714283e5c786a73b9b3cc72ac91dd82cf4c70e | |
| parent | 781497347d1bcb8c95fca8356575cfd42fff1354 (diff) | |
| download | linux-5ac9adecf0cf07b99d4eeda24a89d27447acd860.tar.xz | |
_damon_sysfs: implement commit() for online parameters update
Users can update DAMON parameters while it is running, using 'commit'
DAMON sysfs interface command. For testing the feature in future tests,
implement a function for doing that on the test-purpose DAMON sysfs
interface wrapper Python module.
Link: https://lkml.kernel.org/r/20240625180538.73134-8-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | tools/testing/selftests/damon/_damon_sysfs.py | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/tools/testing/selftests/damon/_damon_sysfs.py b/tools/testing/selftests/damon/_damon_sysfs.py index 17352b9d204d..6e136dc3df19 100644 --- a/tools/testing/selftests/damon/_damon_sysfs.py +++ b/tools/testing/selftests/damon/_damon_sysfs.py @@ -481,6 +481,25 @@ class Kdamond: goal.effective_bytes = int(content) return None + def commit(self): + nr_contexts_file = os.path.join(self.sysfs_dir(), + 'contexts', 'nr_contexts') + content, err = read_file(nr_contexts_file) + if err is not None: + return err + if int(content) != len(self.contexts): + err = write_file(nr_contexts_file, '%d' % len(self.contexts)) + if err is not None: + return err + + for context in self.contexts: + err = context.stage() + if err is not None: + return err + err = write_file(os.path.join(self.sysfs_dir(), 'state'), 'commit') + return err + + def commit_schemes_quota_goals(self): for context in self.contexts: for scheme in context.schemes: |