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 v4 0/2] Introduce a new kfunc of bpf_task_under_cgroup
Date: Fri, 28 Apr 2023 15:17:35 +0800 [thread overview]
Message-ID: <20230428071737.43849-1-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:
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 | 20 +++++++
tools/testing/selftests/bpf/DENYLIST.s390x | 1 +
.../bpf/prog_tests/task_under_cgroup.c | 55 +++++++++++++++++++
.../bpf/progs/test_task_under_cgroup.c | 51 +++++++++++++++++
4 files changed, 127 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
next reply other threads:[~2023-04-28 7:17 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-28 7:17 Feng zhou [this message]
2023-04-28 7:17 ` [PATCH bpf-next v4 1/2] bpf: Add bpf_task_under_cgroup() kfunc Feng zhou
2023-04-28 16:24 ` Yonghong Song
2023-04-28 7:17 ` [PATCH bpf-next v4 2/2] selftests/bpf: Add testcase for bpf_task_under_cgroup Feng zhou
2023-04-28 16:32 ` Yonghong Song
2023-05-04 3:23 ` Feng Zhou
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