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| author | SeongJae Park <sj@kernel.org> | 2023-12-12 19:48:10 +0000 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-12-20 14:48:13 -0800 |
| commit | e3898efaffdb8e78639e68e997e3b8b6d0ed4ebc (patch) | |
| tree | 903e652321fffd936601d9f7c8682e1e0e260925 /tools | |
| parent | b5906f5f7359f561c5915dc146ced1bc2733401c (diff) | |
| download | linux-stable-e3898efaffdb8e78639e68e997e3b8b6d0ed4ebc.tar.gz linux-stable-e3898efaffdb8e78639e68e997e3b8b6d0ed4ebc.tar.bz2 linux-stable-e3898efaffdb8e78639e68e997e3b8b6d0ed4ebc.zip | |
selftests/damon: add a test for update_schemes_tried_regions hang bug
Add a test for reproducing the update_schemes_tried_{regions,bytes}
command-causing indefinite hang bug that fixed by commit 7d6fa31a2fd7
("mm/damon/sysfs-schemes: add timeout for update_schemes_tried_regions"),
to avoid mistakenly re-introducing the bug. Refer to the fix commit for
more details of the bug.
Link: https://lkml.kernel.org/r/20231212194810.54457-6-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>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/damon/Makefile | 1 | ||||
| -rw-r--r-- | tools/testing/selftests/damon/sysfs_update_schemes_tried_regions_hang.py | 33 |
2 files changed, 34 insertions, 0 deletions
diff --git a/tools/testing/selftests/damon/Makefile b/tools/testing/selftests/damon/Makefile index 90ffafc42c5e..8a1cc2bf1864 100644 --- a/tools/testing/selftests/damon/Makefile +++ b/tools/testing/selftests/damon/Makefile @@ -10,6 +10,7 @@ TEST_PROGS += debugfs_empty_targets.sh debugfs_huge_count_read_write.sh TEST_PROGS += debugfs_duplicate_context_creation.sh TEST_PROGS += debugfs_rm_non_contexts.sh TEST_PROGS += sysfs.sh sysfs_update_removed_scheme_dir.sh +TEST_PROGS += sysfs_update_schemes_tried_regions_hang.py TEST_PROGS += sysfs_update_schemes_tried_regions_wss_estimation.py TEST_PROGS += reclaim.sh lru_sort.sh diff --git a/tools/testing/selftests/damon/sysfs_update_schemes_tried_regions_hang.py b/tools/testing/selftests/damon/sysfs_update_schemes_tried_regions_hang.py new file mode 100644 index 000000000000..8c690ba1a573 --- /dev/null +++ b/tools/testing/selftests/damon/sysfs_update_schemes_tried_regions_hang.py @@ -0,0 +1,33 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0 + +import subprocess +import time + +import _damon_sysfs + +def main(): + proc = subprocess.Popen(['sleep', '2']) + kdamonds = _damon_sysfs.Kdamonds([_damon_sysfs.Kdamond( + contexts=[_damon_sysfs.DamonCtx( + ops='vaddr', + targets=[_damon_sysfs.DamonTarget(pid=proc.pid)], + schemes=[_damon_sysfs.Damos( + access_pattern=_damon_sysfs.DamosAccessPattern( + nr_accesses=[200, 200]))] # schemes + )] # contexts + )]) # kdamonds + + err = kdamonds.start() + if err != None: + print('kdmaond start failed: %s' % err) + exit(1) + + while proc.poll() == None: + err = kdamonds.kdamonds[0].update_schemes_tried_bytes() + if err != None: + print('tried bytes update failed: %s' % err) + exit(1) + +if __name__ == '__main__': + main() |