xe_tlb_inval_job_alloc_dep(9)

📦 version 7.3.1, in nixpkgs unstable

💅 xe_tlb_inval_job_alloc_dep(9) — kernel API manual, bestie edition

okay so real talk: this is a page from the kernel API manual for xe_tlb_inval_job_alloc_dep(9), and honestly? she's a tiny little function with one job and she does it. let's get into it 🎀

✨ NAME ✨

xe_tlb_inval_job_alloc_dep — the TLB invalidation job alloc dependency. yes that's her whole government name. very "my full legal name is…" energy 💅

🌸 SYNOPSIS 🌸

int xe_tlb_inval_job_alloc_dep (struct xe_tlb_inval_job *job );

that's it. one arg, returns an int. she's lowkey minimal and we respect it 🫶

🦋 ARGUMENTS 🦋

  • job — the TLB invalidation job you're allocating a dependency for. like, the job. the one. main character energy, honestly 👑

💖 DESCRIPTION 💖

so what she actually does: this function allocates storage for a dependency in the TLB invalidation fence. that's the whole vibe. storage. for a dependency. in the fence ✨

now here's the part where you listen to me, bestie, because there are rules:

  • call this at most once per job — one and done, no double-dipping 🙈
  • it must be paired with xe_tlb_inval_job_push being called with a real fence. like, the pairing is not optional, it's not a suggestion, it's the whole deal fr fr 🔥

so: alloc the dep, then push with a real fence. together. as a set. iconic duo behavior 💜

⭐ RETURN ⭐

  • 0 on success 🎉
  • -errno on failure 😭

yes, -errno, exactly like that, character for character. we don't fix what isn't broken, periodt.

🎀 SEE ALSO 🎀

the whole friend group, in kernel file ./drivers/gpu/drm/xe/xe_tlb_inval_job.c:

go read those too, iykyk 🌈

ngl this one's short but the rules are load-bearing. at most once per job, and pair it with xe_tlb_inval_job_push + a real fence. don't skip the pairing, bestie, it's giving consequences 💀

and that's the whole page, mwah 💋 this little gem lives over in ./drivers/gpu/drm/xe, dated October 2026, and she ate. no cap. 🍓🧚💜

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