vcn_v5_0_0_u...ing_get_wptr(9)

📦 version 7.3.1, in nixpkgs unstable

💅 vcn_v5_0_0_u...ing_get_wptr(9) — like, the whole page, bestie

okay so this is a page from the Kernel API Manual (the section 9 girlies, kernel devs only ✨) and the function's full name is vcn_v5_0_0_unified_ring_get_wptr, which the header shortens to vcn_v5_0_0_u...ing_get_wptr(9) because even man pages have a character limit, smh. Anyway. Sit down, hydrate, let's go 🫶

✨ NAME ✨

vcn_v5_0_0_unified_ring_get_wptr — get unified write pointer. that's it. that's the whole vibe 💫

🌸 SYNOPSIS 🌸

uint64_t vcn_v5_0_0_unified_ring_get_wptr (struct amdgpu_ring *ring );

like, you hand it a ring and it hands you back a uint64_t. give and take, queen 👑

🎀 ARGUMENTS 🎀

  • ring — an amdgpu_ring pointer. yes bestie, a pointer. it's the ring you're asking about and it's literally the only thing you have to pass in. no notes 🔥

🦋 DESCRIPTION 🦋

Returns the current hardware unified write pointer.

that's it! that's the sentence! it reads the hardware's unified write pointer right now, in this exact moment, and gives it to you as a uint64_t. it's giving "just tell me where the write head is at" and honestly? iconic. no cap 💅

real talk though — it's the current hardware pointer, so what you get back is whatever the hardware is doing at the moment you call. it's not a cached value, it's not a guess. the hardware said what it said ✨

👑 SEE ALSO 👑

the whole friend group fr fr, all of them in ./drivers/gpu/drm/amd/amdgpu/vcn_v5_0_0.c:

like I said. the entire group chat. and yeah, vcn_v5_0_0_unified_ring_get_rptr(9) and vcn_v5_0_0_unified_ring_set_wptr(9) are right there — get, set, the matched set, we love a coordinated trio 💖

mwah 💋 that's the page! this little gem ships out of ./drivers/gpu/drm/amd/amdgpu, dated October 2026, under the banner of the Kernel API Manual — go read the source file if you wanna see the whole fit, and stay hydrated bestie, ily 🧚‍♀️⭐

📦 where this page comes from