LoongArch: BPF: Add arch_bpf_stack_walk() implementation

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Implement arch_bpf_stack_walk() on top of the ORC unwinder within
the LoongArch BPF JIT backend to provide generic BPF stack walking
capabilities.

This function is required by advanced BPF features, including timed
may_goto timeout tracing and BPF exceptions. It will be invoked in
the BPF core subsystem unwinding paths: bpf_prog_find_from_stack(),
bpf_stream_stage_dump_stack(), and bpf_throw().

Co-developed-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: George Guo <guodongtai@kylinos.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

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George Guo 2026-08-17 22:07:40 +08:00 • committed by Huacai Chen

parent 3fbf3534c2

commit e7103e5e3b

1 changed files with 38 additions and 0 deletions

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arch/loongarch/net/bpf_jit.c

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