Re: [PATCH bpf-next v3 3/4] libbpf: Add tp_btf.s section handler for sleepable raw tracepoints

[Puranjay Mohan <puranjay@kernel.org>]

Mykyta Yatsenko <mykyta.yatsenko5@gmail.com> writes:

> From: Mykyta Yatsenko <yatsenko@meta.com>
>
> Add SEC_DEF for "tp_btf.s+" section prefix, enabling userspace BPF
> programs to use SEC("tp_btf.s/<tracepoint>") to load sleepable raw
> tracepoint programs. This follows the existing pattern used for
> fentry.s, fexit.s, fmod_ret.s, and lsm.s section definitions.
>
> Acked-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
> Signed-off-by: Mykyta Yatsenko <yatsenko@meta.com>

Acked-by: Puranjay Mohan <puranjay@kernel.org>

> ---
>  tools/lib/bpf/libbpf.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
> index 0662d72bad20..7b65869f5c8e 100644
> --- a/tools/lib/bpf/libbpf.c
> +++ b/tools/lib/bpf/libbpf.c
> @@ -9863,6 +9863,7 @@ static const struct bpf_sec_def section_defs[] = {
>  	SEC_DEF("raw_tracepoint.w+",	RAW_TRACEPOINT_WRITABLE, 0, SEC_NONE, attach_raw_tp),
>  	SEC_DEF("raw_tp.w+",		RAW_TRACEPOINT_WRITABLE, 0, SEC_NONE, attach_raw_tp),
>  	SEC_DEF("tp_btf+",		TRACING, BPF_TRACE_RAW_TP, SEC_ATTACH_BTF, attach_trace),
> +	SEC_DEF("tp_btf.s+",		TRACING, BPF_TRACE_RAW_TP, SEC_ATTACH_BTF | SEC_SLEEPABLE, attach_trace),
>  	SEC_DEF("fentry+",		TRACING, BPF_TRACE_FENTRY, SEC_ATTACH_BTF, attach_trace),
>  	SEC_DEF("fmod_ret+",		TRACING, BPF_MODIFY_RETURN, SEC_ATTACH_BTF, attach_trace),
>  	SEC_DEF("fexit+",		TRACING, BPF_TRACE_FEXIT, SEC_ATTACH_BTF, attach_trace),
>
> -- 
> 2.52.0