linux-kernel - [PATCH bpf-next 0/4] bpf: Allow get_func_[arg|arg

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Message-ID: <20250426160027.177173-1-mannkafai@gmail.com>
Date: Sun, 27 Apr 2025 00:00:23 +0800
From: KaFai Wan <mannkafai@...il.com>
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Subject: [PATCH bpf-next 0/4] bpf: Allow get_func_[arg|arg_cnt] helpers in raw tracepoint programs

hi, 

We can use get_func_[arg|arg_cnt] helpers in fentry/fexit/fmod_ret programs
currently[1]. But they can't be used in raw_tp/tp_btf programs.

Adding support to use get_func_[arg|arg_cnt] helpers in raw_tp/tp_btf
programs.
Adding BPF_PROG_TEST_RUN for tp_btf.
Add selftests to check them.

Thanks,
KaFai

[1] https://lore.kernel.org/bpf/20211208193245.172141-1-jolsa@kernel.org/
---
KaFai Wan (4):
  bpf: Allow get_func_[arg|arg_cnt] helpers in raw tracepoint programs
  bpf: Enable BPF_PROG_TEST_RUN for tp_btf
  selftests/bpf: Add raw_tp_test_run for tp_btf
  selftests/bpf: Add tests for get_func_[arg|arg_cnt] helpers in raw
    tracepoint programs

 kernel/trace/bpf_trace.c                      | 17 +++++--
 net/bpf/test_run.c                            | 16 +++----
 .../bpf/prog_tests/raw_tp_get_func_args.c     | 48 +++++++++++++++++++
 .../bpf/prog_tests/raw_tp_test_run.c          | 18 ++++++-
 .../bpf/progs/test_raw_tp_get_func_args.c     | 47 ++++++++++++++++++
 .../bpf/progs/test_raw_tp_test_run.c          | 16 +++++--
 6 files changed, 146 insertions(+), 16 deletions(-)
 create mode 100644 tools/testing/selftests/bpf/prog_tests/raw_tp_get_func_args.c
 create mode 100644 tools/testing/selftests/bpf/progs/test_raw_tp_get_func_args.c

-- 
2.43.0