tb_ring_throttling(9)

✨ tb_ring_throttling(9) ✨

okay so bestie, welcome to section 9 of the kernel API manual, and today's main character lives in ./drivers/thunderbolt — yes the Thunderbolt directory, we love her 💅

---

🎀 NAME 🎀

tb_ring_throttling — configure throttling for ring interrupt 🦋

⭐ SYNOPSIS ⭐

int tb_ring_throttling(struct tb_ring *ring, unsigned int interval_nsec);

🌸 ARGUMENTS 🌸

• ring — the ring you wanna configure, periodt 💖
• interval_nsec — the interval counter for moderation, measured in ns, and 0 disables it entirely. like, zero means off, no cap 🙈

🔥 DESCRIPTION 🔥

So this one enables or disables ring interrupt throttling — literally that's the whole vibe check 🫶

⚠️ the ring must be stopped before you call this. not paused, not "kinda done", stopped. the way that it will not work otherwise 😭

Granularity is 256 ns. mmkay? that's the resolution you're working with, so don't come at her with 100 ns and expect precision 💀

💜 RETURN 💜

• 0 on success — slay, we ate 👑
• negative errno otherwise — not slay, something went sideways 🍓

🌈 SEE ALSO 🌈

Kernel file ./drivers/thunderbolt/nhi.c, plus the whole friend group:

• tb_ring_poll(9)
• tb_ring_poll_complete(9)
• tb_ring_alloc_tx(9)
• tb_ring_alloc_rx(9)
• tb_ring_start(9)
• tb_ring_flush(9)
• tb_ring_stop(9)
• nhi_mailbox_cmd(9)
• nhi_mailbox_mode(9)

---

and that's the page, bestie ✨ sign-off time: this lil masterpiece comes from ./drivers/thunderbolt, dated October 2026, and it's filed under tb_ring_throttling(9). mwah 💋🧚‍♀️