sdma_v4_0_ctx_switch_enable(9)

📦 version 7.3.1, in nixpkgs unstable

💅 sdma_v4_0_ctx_switch_enable(9) — bestie edition

okay so welcome to the Kernel API Manual, babe — literally the whole vibe of this page is one function, sdma_v4_0_ctx_switch_enable(9), and it is lowkey doing one very specific thing for the async dma engines. let's get into it 🫶

✨ NAME ✨

sdma_v4_0_ctx_switch_enable — stops the async dma engines context switch. that's it. that's the whole job. iconic honestly 🎀

🌸 SYNOPSIS 🌸

void sdma_v4_0_ctx_switch_enable (struct amdgpu_device *adev , bool
enable );

yeah she takes two things and gives you back absolutely nothing. void. no return value, no drama, no receipts. periodt. 💅

🦋 ARGUMENTS 🦋

  • adev — an amdgpu_device pointer. like, your whole GPU situation, handed to you. super main character energy 👑
  • enable — a bool that enables/disables the DMA MEs context switch. so you're either like "go off" or "halt, bestie" — pick one 🚦

💖 DESCRIPTION 💖

halt or unhalt the async dma engines context switch (VEGA10). that's the tea ☕ literally that's the description. you flip this bad boy one way and the context switch goes halt, flip it the other and it unhalts. VEGA10 specifically, no cap 🔥

🌈 SEE ALSO 🌈

the kernel file herself: ./drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c — she's the whole neighborhood, and here's everybody living on the block together:

like i said. whole neighborhood. go read all of them, i'll wait 🍓

ngl if you got this far you're officially a sdma_v4_0 girlie now. no notes, just vibes and DMA 🧚

and that's a wrap! 💜 this little love letter lives down at ./drivers/gpu/drm/amd/amdgpu, and it was dated October 2026 — so mark your calendars, bestie. sdma_v4_0_ctx_switch_enable(9) out. slay responsibly ✨🦋

📦 where this page comes from