hl_mmap_mem_buf_release(9)

📦 version 7.3.1, in nixpkgs unstable

💖 hl_mmap_mem_buf_release(9) 💖

okay so bestie, welcome to the Kernel API Manual ✨ this one's a lil function page and honestly it's giving "short but crucial" energy, so let's get into it 🫶

🌸 NAME 🌸

hl_mmap_mem_buf_release — literally just, release the buffer 🎀

✨ SYNOPSIS ✨

void hl_mmap_mem_buf_release (struct kref *kref );

no cap, that's the whole signature 👑 notice it returns void — she doesn't give anything back, she just does her job and leaves 💅

🦋 ARGUMENTS 🦋

  • kref — the kref that reached 0. like, this lil reference counter finally hit zero and now it's time 🎯

🌈 DESCRIPTION 🌈

okay so here's the tea ☕ this is an internal function, meaning she's not out here for public consumption, she's backstage crew 🧚

She's used as a kref release callback — so when the last user of the buffer is released, this is the function that gets called. Last one out, turns off the lights, iconic behaviour honestly 💡

⚠️ real talk though: she shall be called from an interrupt context. that's not a suggestion, that's the vibe check you must pass 💀 don't be out here calling her from anywhere else fr fr

👑 SEE ALSO 👑

the source lives here, bestie, go read it iykyk:

Kernel file ./drivers/accel/habanalabs/common/memory_mgr.c

and her whole friend group 💖:

aaaand that's the page!! 🍓 mwah 💋 this dropped from ./drivers/accel/habanalabs/common back in October 2026, so go forth and release those buffers responsibly, bestie 🌸💜

📦 where this page comes from