Merge branch 'libbpf: Add syscall-specific variant of BPF_KPROBE'

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Hengqi Chen says:

====================

Add new macro BPF_KPROBE_SYSCALL, which provides easy access to syscall
input arguments. See [0] and [1] for background.

  [0]: https://github.com/libbpf/libbpf-bootstrap/issues/57
  [1]: https://github.com/libbpf/libbpf/issues/425

v2->v3:
  - Use PT_REGS_SYSCALL_REGS
  - Move selftest to progs/bpf_syscall_macro.c

v1->v2:
  - Use PT_REGS_PARM2_CORE_SYSCALL instead
====================

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>

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This commit is contained in:

Andrii Nakryiko 2022-02-08 21:42:42 -08:00

parent 8dd039a6fc c28748233b

commit 3caa7d2e2e

3 changed files with 64 additions and 0 deletions

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35

tools/lib/bpf/bpf_tracing.h

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6

tools/testing/selftests/bpf/prog_tests/test_bpf_syscall_macro.c

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23

tools/testing/selftests/bpf/progs/bpf_syscall_macro.c

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