stm_source_link_add(9)

📦 version 7.3.1, in nixpkgs unstable

okay so bestie, welcome to the Kernel API Manual — this page is all about stm_source_link_add, and yes it's a whole vibe. it's basically the matchmaker function of the STM world and i'm obsessed 🫶

✨ NAME ✨

stm_source_link_add — connect an stm_source device to an stm device 💅

🦋 SYNOPSIS 🦋

int stm_source_link_add (struct stm_source_device *src , struct
stm_device *stm );

like, that's the whole signature, no cap ✨

🌸 ARGUMENTS 🌸

  • src — your stm_source device, the one with the tea to spill ☕
  • stm — your stm device, the one who's gonna hear all about it 👑

🎀 DESCRIPTION 🎀

so what this function does is establish a link from stm_source to an stm device — the whole point being that the former (that's stm_source, hi) can send out trace data to the latter (that's stm, hiii). it's giving "i know a guy" energy, fr fr 🔥

⭐ RETURN ⭐

0 on success, -errno otherwise. slay when it's zero, weep when it's not 😭

ngl if you get anything that isn't 0, that's your -errno telling you something went sideways. read the room (and the errno) 💀

🌈 SEE ALSO 🌈

kernel file ./drivers/hwtracing/stm/core.c plus the whole friend group:

okay that's the whole page bestie, no notes 💜 this one comes straight out of ./drivers/hwtracing/stm, dated October 2026, and it's signed stm_source_link_add(9) — iconic, periodt 🎀✨🦋

📦 where this page comes from