populate_sdt_note(9)

✨ populate_sdt_note(9) ✨

okay so bestie, welcome to the Kernel API Manual — we're in section 9 and this page is lowkey a whole vibe 💅. Today's main character is populate_sdt_note, and yes she's here to identify an SDT note. 🎀

🌸 NAME 🌸

populate_sdt_note — parse raw data and identify SDT note. That's the whole assignment, no cap. ✨

🦋 SYNOPSIS 🦋

int populate_sdt_note (Elf **elf , const char *data , size_t len ,
       struct list_head *sdt_notes );

🍓 ARGUMENTS 🍓

• elf — elf of the opened file, literally the elf of the opened file. bestie, that's her.
• data — raw data of a section with description offset applied. yep, exactly that energy.
• len — note description size. not the whole universe, just the note description size.
• sdt_notes — List to add the SDT note. she's the destination list, periodt.

🔥 DESCRIPTION 🔥

So the job is parsing the data in section .note.stapsdt in elf, okay? And if it's an SDT note, populate_sdt_note appends it to the sdt_notes list. That's it. That's the tea. 🫶

no extra lore, no side quests — just .note.stapsdt, SDT-note detection, and appending to sdt_notes. 🧚

🌈 SEE ALSO 🌈

• Kernel file at ./tools/perf/util/symbol-elf.c — go look, iykyk 📁
• elf_symtab__for_each_symbol(9)
• ref_reloc_sym_not_found(9)
• ref_reloc(9)
• kcore_copy(9)
• construct_sdt_notes_list(9)
• get_sdt_note_list(9)
• cleanup_sdt_note_list(9)
• sdt_notes__get_count(9)

mwah 💋 this page hangs out under ./tools/perf/util and is dated October 2026 — slay, goodbye, periodt. 🎀✨