linux.git/tools/testing/selftests/acct/Makefile, branch master Linux kernel source tree selftests/acct: share netlink helpers 2026-08-04T04:10:14+00:00 Yiyang Chen cyyzero16@gmail.com 2026-07-12T17:13:31+00:00 0a2418c32734e5fd657d74b3a9598746e5a1f4f4 Extract the duplicated generic netlink boilerplate (netlink_open, send_request, get_family_id, and NLA walker macros) from cgroupstats.c and taskstats_fill_stats_tgid.c into a shared netlink_helper.{h,c}. Link: https://lore.kernel.org/a2adf27308b5cd90d50b59e8519b87da49486bee.1783876192.git.cyyzero16@gmail.com Signed-off-by: Yiyang Chen <cyyzero16@gmail.com> Suggested-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Balbir Singh <balbirs@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> 
Extract the duplicated generic netlink boilerplate (netlink_open,
send_request, get_family_id, and NLA walker macros) from cgroupstats.c and
taskstats_fill_stats_tgid.c into a shared netlink_helper.{h,c}.

Link: https://lore.kernel.org/a2adf27308b5cd90d50b59e8519b87da49486bee.1783876192.git.cyyzero16@gmail.com
Signed-off-by: Yiyang Chen <cyyzero16@gmail.com>
Suggested-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Balbir Singh <balbirs@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/acct: add cgroupstats functional test 2026-08-04T04:10:13+00:00 Yiyang Chen cyyzero16@gmail.com 2026-07-10T20:07:37+00:00 e31d33fc331a9b725426b6573237859606ece621 Add a self-contained test for the CGROUPSTATS_CMD_GET genl command that covers three cases: - querying a cgroup v1 hierarchy and verifying the response contains non-zero task counts - rejecting an invalid fd without NLM_F_ACK - rejecting an invalid fd with NLM_F_ACK Link: https://lore.kernel.org/2a56921276f0962f97f00863e8c7d3c3f6893d5a.1783713230.git.cyyzero16@gmail.com Signed-off-by: Yiyang Chen <cyyzero16@gmail.com> Cc: Balbir Singh <balbirs@nvidia.com> Cc: Dr. Thomas Orgis <thomas.orgis@uni-hamburg.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> 
Add a self-contained test for the CGROUPSTATS_CMD_GET genl command that
covers three cases:

- querying a cgroup v1 hierarchy and verifying the response
  contains non-zero task counts
- rejecting an invalid fd without NLM_F_ACK
- rejecting an invalid fd with NLM_F_ACK

Link: https://lore.kernel.org/2a56921276f0962f97f00863e8c7d3c3f6893d5a.1783713230.git.cyyzero16@gmail.com
Signed-off-by: Yiyang Chen <cyyzero16@gmail.com>
Cc: Balbir Singh <balbirs@nvidia.com>
Cc: Dr. Thomas Orgis <thomas.orgis@uni-hamburg.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/acct: add taskstats TGID retention test 2026-05-29T04:24:41+00:00 Yiyang Chen cyyzero16@gmail.com 2026-04-13T15:45:45+00:00 20e4b31f8e837d923eee91cd5458f823a11cca9a 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> 
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>
selftest: acct: Add selftest for the acct() syscall 2024-08-01T19:55:34+00:00 Abdulrasaq Lawani abdulrasaqolawani@gmail.com 2024-08-01T09:29:52+00:00 f0a1ffa6f9771c6a1283afab591781e7c797e2e1 The acct() system call enables or disables process accounting. If accounting is turned on, records for each terminating process are appended to a specified filename as it terminates. An argument of NULL causes accounting to be turned off. This patch will add a test for the acct() syscall. Signed-off-by: Abdulrasaq Lawani <abdulrasaqolawani@gmail.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> 
The acct() system call enables or disables process accounting.
If accounting is turned on, records for each terminating process
are appended to a specified filename as it terminates. An argument of NULL
causes accounting to be turned off.

This patch will add a test for the acct() syscall.

Signed-off-by: Abdulrasaq Lawani <abdulrasaqolawani@gmail.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>