radeon_fence_wait_next(9)

📦 version 7.3.1, in nixpkgs unstable

✨ radeon_fence_wait_next(9) ✨

okay so bestie, welcome to the kernel API manual 💖 we're talking about radeon_fence_wait_next(9) today — yes, that whole name, say it with your chest. it lives in the Linux kernel API docs and it's lowkey iconic in a "sitting quietly in a driver file" kind of way 🎀

🌸 NAME 🌸

radeon_fence_wait_next — wait for the next fence to signal ⏳✨

like, literally just sit there and vibe until the next fence on your ring goes off. that's the whole job. no cap.

🦋 SYNOPSIS 🦋

int radeon_fence_wait_next (struct radeon_device *rdev , int ring );

there it is, character for character, don't touch it, it's perfect 💅

🎀 ARGUMENTS 🎀

  • rdev — the radeon device pointer 🖥️ your main character, fr. this is the device you're doing the waiting on.
  • ring — the ring index the fence is associated with 🔄 which ring's fence are we stalking? this number. that's it, that's the vibe check.

🔥 DESCRIPTION 🔥

so the way that this works is: you wait for the next fence on the requested ring to signal — and this applies to all asics, every single one, no exceptions, periodt 💀

it returns 0 if the next fence has passed ✅ (slay, we love a success). and it returns an error for all other cases 😭 — yeah, everything else is an error, that's the deal.

⚠️ big one, don't skip this: the caller must hold the ring lock. 🔒 not optional, not "eh I'll grab it later". hold the lock, bestie. this is not a drill.

💜 SEE ALSO 💜

kernel file ahoy 🫶 the good stuff lives here:

./drivers/gpu/drm/radeon/radeon_fence.c

and the whole fence friend group 👑 — these are the siblings, the cousins, the entire group chat:

that's the whole page, you ate it up, no crumbs 🌈

sign-off time 🧚 this one came out of the Kernel API Manual, source path ./drivers/gpu/drm/radeon, dated October 2026, and it's radeon_fence_wait_next(9) — go forth and wait on fences responsibly, bestie 💖✨

📦 where this page comes from