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    SubjectRe: [PATCH v5 perf,bpf 12/15] perf, bpf: enable annotation of bpf program
    On Wed, Feb 27, 2019 at 09:06:40PM -0800, Song Liu wrote:

    SNIP

    > + fflush(s);
    > + do {
    > + const struct bpf_line_info *linfo = NULL;
    > + struct disasm_line *dl;
    > + size_t prev_buf_size;
    > + const char *srcline;
    > + u64 addr;
    > +
    > + addr = pc + ((u64 *)(info_linear->info.jited_ksyms))[sub_id];
    > + count = disassemble(pc, &info);
    > +
    > + if (prog_linfo)
    > + linfo = bpf_prog_linfo__lfind_addr_func(prog_linfo,
    > + addr, sub_id,
    > + nr_skip);
    > +
    > + if (linfo && btf) {
    > + srcline = btf__name_by_offset(btf, linfo->line_off);
    > + nr_skip++;
    > + } else
    > + srcline = NULL;
    > +
    > + fprintf(s, "\n");
    > + prev_buf_size = buf_size;
    > + fflush(s);
    > +
    > + if (!opts->hide_src_code && srcline) {
    > + args->offset = -1;

    why's the offset not needed in here?

    jirka

    > + args->line = strdup(srcline);
    > + args->line_nr = 0;
    > + args->ms.sym = sym;
    > + dl = disasm_line__new(args);
    > + if (dl) {
    > + annotation_line__add(&dl->al,
    > + &notes->src->source);
    > + }
    > + }

    SNIP

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