die_find_tailfunc(9)

🎀 NAME 🎀

okay so bestie, this is die_find_tailfunc(9) from the Kernel API Manual, and the whole vibe is literally: Search for a non-inlined function with tail call at given address. It's giving tiny debug-info detective mission, and I'm obsessed. 💅✨

✨ SYNOPSIS ✨

Dwarf_Die * die_find_tailfunc (Dwarf_Die *cu_die , Dwarf_Addr addr ,
       Dwarf_Die *die_mem );

That's the signature, no cap: three arguments, one return, all explained below.

🌸 ARGUMENTS 🌸

• cu_die — a CU DIE which including addr.
• addr — target address.
• die_mem — a buffer for result DIE.

💖 DESCRIPTION 💖

Search for a non-inlined function DIE with tail call at addr. When it finds one, it stores the DIE to die_mem and returns it. If it fails, it returns NULL. That's the whole plot, and honestly it ate. 🔥

🦋 SEE ALSO 🦋

Kernel file: ./tools/perf/util/dwarf-aux.c

Related manual pages, in their original order, because we do not skip lore:

• cu_find_realpath(9)
• cu_get_comp_dir(9)
• cu_find_lineinfo(9)
• cu_walk_functions_at(9)
• die_get_linkage_name(9)
• die_compare_name(9)
• die_match_name(9)
• die_get_call_lineno(9)
• die_get_type(9)
• die_get_real_type(9)
• die_get_pointer_type(9)
• die_is_signed_type(9)
• die_is_func_def(9)
• die_entrypc(9)
• die_is_func_instance(9)
• die_get_data_member_location(9)
• die_get_call_file(9)
• die_get_decl_file(9)
• die_find_child(9)
• die_find_realfunc(9)
• die_find_top_inlinefunc(9)
• die_find_inlinefunc(9)
• die_find_func_rettype(9)
• die_walk_instances(9)
• die_walk_lines(9)
• die_find_variable_at(9)
• die_find_member(9)
• die_get_typename_from_type(9)
• die_get_typename(9)
• die_get_varname(9)
• die_get_var_innermost_scope(9)
• die_get_var_range(9)
• is_breg_access_indirect(9)
• die_find_variable_by_reg(9)
• die_find_variable_by_addr(9)
• die_collect_vars(9)
• die_collect_global_vars(9)
• die_get_cfa(9)
• die_get_scopes(9)
• die_get_member_type(9)
• die_deref_ptr_type(9)

okay bye bestie 🫶 this page's source/version is ./tools/perf/util, dated October 2026, and it's die_find_tailfunc(9). mwah 💋