jpeg_v4_0_5...ing_get_wptr(9)

📦 version 7.3.1, in nixpkgs unstable

💅 jpeg_v4_0_5_dec_ring_get_wptr 💅

okay so bestie, welcome to the Kernel API Manual — yes that's the manual name, it's giving official, it's giving "i read documentation for fun" and honestly? iconic 🎀

✨ NAME ✨

jpeg_v4_0_5_dec_ring_get_wptr — get write pointer. that's it, that's the whole vibe. it gets the write pointer 🫶

✨ SYNOPSIS ✨

uint64_t jpeg_v4_0_5_dec_ring_get_wptr (struct amdgpu_ring *ring );

not me writing out the whole signature exactly, character for character, because precision is the moment 💅

✨ ARGUMENTS ✨

  • ring — an amdgpu_ring pointer. yeah that's literally the entire description the manpage gives and i'm not gonna invent lore about it, so just know: it's a pointer to an amdgpu_ring 🦋

✨ DESCRIPTION ✨

it returns the current hardware write pointer. that's the whole thing, no cap. the current one, as in right now, as in the hardware's, as in the write pointer. one job, does it, slay 👑

🦋 SEE ALSO 🦋

the kernel file this lives in, bestie:

./drivers/gpu/drm/amd/amdgpu/jpeg_v4_0_5.c

and the whole friend group of sibling functions — every single one, in order, no skipping, because we don't do that here 💖

like get_rptr and set_wptr are right there, it's giving we're a set, we're a unit 🌈

ngl the whole "get the write pointer" thing is lowkey the main character of ring buffer bookkeeping, and this function is the one you call when you need to know where the hardware thinks it is. no extra behaviour, no surprises, just the pointer. periodt 🍓

🧚 and that's the page!! brought to you by the legends over at ./drivers/gpu/drm/amd/amdgpu, dated October 2026, filed under jpeg_v4_0_5...ing_get_wptr(9) in the Kernel API Manual — mwah, love u, go read ur ring buffers 💜⭐

📦 where this page comes from