Documentation/bpf/btf.rst

463    * BPF_OBJ_GET_INFO_BY_FD: btf, func_info, line_info
535 During prog_load, func_info and line_info can be passed to kernel with proper
547     __aligned_u64   line_info;      /* line info */
550 The func_info and line_info are an array of below, respectively.::
564 line_info_rec_size is the size of each line_info record. Passing the record
572 Below are requirements for line_info:
573   * the first insn in each func must have a line_info record pointing to it.
574   * the line_info insn_off is in strictly increasing order.
576 For line_info, the line number and column number are defined as below:
633 The .BTF.ext section encodes func_info and line_info which needs loader
655 contains func_info and line_info section. See :ref:`BPF_Prog_Load` for details
656 about func_info and line_info record format.
678 The line_info is organized as below.::
681      btf_ext_info_sec for section #1 /* line_info for section #1 */
682      btf_ext_info_sec for section #2 /* line_info for section #2 */
803 The following is an example showing how func_info and line_info can help prog
837 The following is an example of how line_info can help debugging verification