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From: Feng zhou <zhoufeng.zf@bytedance.com>
To: martin.lau@linux.dev, ast@kernel.org, daniel@iogearbox.net,
	andrii@kernel.org, song@kernel.org, yhs@fb.com,
	john.fastabend@gmail.com, kpsingh@kernel.org, sdf@google.com,
	haoluo@google.com, jolsa@kernel.org, davem@davemloft.net,
	edumazet@google.com, kuba@kernel.org, pabeni@redhat.com,
	mykolal@fb.com, shuah@kernel.org
Cc: bpf@vger.kernel.org, linux-kernel@vger.kernel.org,
	netdev@vger.kernel.org, linux-kselftest@vger.kernel.org,
	yangzhenze@bytedance.com, wangdongdong.6@bytedance.com,
	zhoufeng.zf@bytedance.com
Subject: [PATCH bpf-next v7 0/2] Introduce a new kfunc of bpf_task_under_cgroup
Date: Sat,  6 May 2023 11:15:43 +0800	[thread overview]
Message-ID: <20230506031545.35991-1-zhoufeng.zf@bytedance.com> (raw)

From: Feng Zhou <zhoufeng.zf@bytedance.com>

Trace sched related functions, such as enqueue_task_fair, it is necessary to
specify a task instead of the current task which within a given cgroup.

Feng Zhou (2):
  bpf: Add bpf_task_under_cgroup() kfunc
  selftests/bpf: Add testcase for bpf_task_under_cgroup

Changelog:
v6->v7: Addressed comments from Hao Luo
- Get rid of unnecessary check
Details in here:
https://lore.kernel.org/all/20230505060818.60037-1-zhoufeng.zf@bytedance.com/

v5->v6: Addressed comments from Yonghong Song
- Some code format modifications.
- Add ack-by
Details in here:
https://lore.kernel.org/all/20230504031513.13749-1-zhoufeng.zf@bytedance.com/

v4->v5: Addressed comments from Yonghong Song
- Some code format modifications.
Details in here:
https://lore.kernel.org/all/20230428071737.43849-1-zhoufeng.zf@bytedance.com/

v3->v4: Addressed comments from Yonghong Song
- Modify test cases and test other tasks, not the current task.
Details in here:
https://lore.kernel.org/all/20230427023019.73576-1-zhoufeng.zf@bytedance.com/

v2->v3: Addressed comments from Alexei Starovoitov
- Modify the comment information of the function.
- Narrow down the testcase's hook point
Details in here:
https://lore.kernel.org/all/20230421090403.15515-1-zhoufeng.zf@bytedance.com/

v1->v2: Addressed comments from Alexei Starovoitov
- Add kfunc instead.
Details in here:
https://lore.kernel.org/all/20230420072657.80324-1-zhoufeng.zf@bytedance.com/

 kernel/bpf/helpers.c                          | 17 ++++++
 tools/testing/selftests/bpf/DENYLIST.s390x    |  1 +
 .../bpf/prog_tests/task_under_cgroup.c        | 53 +++++++++++++++++++
 .../bpf/progs/test_task_under_cgroup.c        | 51 ++++++++++++++++++
 4 files changed, 122 insertions(+)
 create mode 100644 tools/testing/selftests/bpf/prog_tests/task_under_cgroup.c
 create mode 100644 tools/testing/selftests/bpf/progs/test_task_under_cgroup.c

-- 
2.20.1


             reply	other threads:[~2023-05-06  3:16 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-06  3:15 Feng zhou [this message]
2023-05-06  3:15 ` [PATCH bpf-next v7 1/2] bpf: Add bpf_task_under_cgroup() kfunc Feng zhou
2023-05-06  3:15 ` [PATCH bpf-next v7 2/2] selftests/bpf: Add testcase for bpf_task_under_cgroup Feng zhou
2023-05-06 21:10 ` [PATCH bpf-next v7 0/2] Introduce a new kfunc of bpf_task_under_cgroup patchwork-bot+netdevbpf

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