r600_dma_sem...re_ring_emit(9)

📦 version 7.3.1, in nixpkgs unstable

💅 NAME 💅

r600_dma_semaphore_ring_emit — bestie, this is the one that emits a semaphore on the dma ring ✨ (yes, that's the whole vibe, and it's in the Kernel API Manual, no big deal 🎀)

🌸 SYNOPSIS 🌸

bool r600_dma_semaphore_ring_emit (struct radeon_device *rdev , struct
       radeon_ring *ring , struct radeon_semaphore *semaphore , bool emit_wait
       );

okay so it returns a bool, and it takes four things — we're gonna go through them one by one, don't worry, I got you 🫶

🦋 ARGUMENTS 🦋

  • rdev — a radeon_device pointer. it's giving "the whole device, like, as a concept" 💖
  • ring — the radeon_ring structure holding ring information. literally the ring's whole personality in one struct ✨
  • semaphore — a radeon semaphore object. the semaphore in question, main character energy 👑
  • emit_wait — a bool that decides whether we wait on the semaphore or signal it. two paths, one flag, iconic 💅

🔥 DESCRIPTION 🔥

so what it actually does: it adds a DMA semaphore packet to the ring, and that packet either waits on other rings or signals other rings — whichever one emit_wait told it to do 😌 and this whole situation covers r6xx-SI, periodt ⭐

ngl that's genuinely the entire description. sometimes the lore is just short, bestie 💀

🎀 SEE ALSO 🎀

Kernel file ./drivers/gpu/drm/radeon/r600_dma.c, plus the whole friend group:

kisses and semaphores, bestie 💖 this lil page lives in ./drivers/gpu/drm/radeon, it's dated October 2026, and you can find it chillin' under r600_dma_sem...re_ring_emit(9) in the Kernel API Manual — go off, you're gonna slay this driver 🌈💜

📦 where this page comes from