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| author | Yiyang Chen <cyyzero16@gmail.com> | 2026-04-13 23:45:45 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-05-28 21:24:41 -0700 |
| commit | 20e4b31f8e837d923eee91cd5458f823a11cca9a (patch) | |
| tree | 33cde3ae438cf0e850bf77d213cb91a1014e26b7 /tools/perf/scripts/python | |
| parent | b3e4fbb04220efc3bc022bcf31b5689d39c6b111 (diff) | |
selftests/acct: add taskstats TGID retention test
Add a kselftest for the taskstats TGID aggregation fix.
The test creates a worker thread, snapshots TGID taskstats while the
worker is still alive, lets the worker exit, and then verifies that the
TGID CPU total does not regress after the thread has been reaped.
The pass/fail check intentionally keys off ac_utime + ac_stime only, which
is the primary user-visible regression fixed by the taskstats change and
is less sensitive to scheduling noise than context-switch counters.
Link: https://lore.kernel.org/0d55354911c54cd1b9f10a09f6fd378af85c8d43.1776094300.git.cyyzero16@gmail.com
Signed-off-by: Yiyang Chen <cyyzero16@gmail.com>
Acked-by: Balbir Singh <balbirs@nvidia.com>
Cc: Dr. Thomas Orgis <thomas.orgis@uni-hamburg.de>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Wang Yaxin <wang.yaxin@zte.com.cn>
Cc: Yang Yang <yang.yang29@zte.com.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions