linux-kernel - [PATCH bpf-next 0/2] Introduce a new bpf helper of bpf_task_under

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Message-Id: <20230420072657.80324-1-zhoufeng.zf@bytedance.com>
Date:   Thu, 20 Apr 2023 15:26:55 +0800
From:   Feng zhou <zhoufeng.zf@...edance.com>
To:     martin.lau@...ux.dev, ast@...nel.org, daniel@...earbox.net,
        andrii@...nel.org, song@...nel.org, yhs@...com,
        john.fastabend@...il.com, kpsingh@...nel.org, sdf@...gle.com,
        haoluo@...gle.com, jolsa@...nel.org, davem@...emloft.net,
        edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
        mykolal@...com, shuah@...nel.org
Cc:     bpf@...r.kernel.org, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, linux-kselftest@...r.kernel.org,
        yangzhenze@...edance.com, wangdongdong.6@...edance.com,
        zhoufeng.zf@...edance.com
Subject: [PATCH bpf-next 0/2] Introduce a new bpf helper of bpf_task_under_cgroup

From: Feng Zhou <zhoufeng.zf@...edance.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 to a map.

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

 include/uapi/linux/bpf.h                      | 13 +++++
 kernel/bpf/verifier.c                         |  4 +-
 kernel/trace/bpf_trace.c                      | 31 ++++++++++++
 tools/include/uapi/linux/bpf.h                | 13 +++++
 .../bpf/prog_tests/task_under_cgroup.c        | 49 +++++++++++++++++++
 .../bpf/progs/test_task_under_cgroup.c        | 31 ++++++++++++
 6 files changed, 140 insertions(+), 1 deletion(-)
 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