hl_cq_inc_ptr(9)

💖 hl_cq_inc_ptr(9) — the Kernel API Manual, but make it cute 💖

okay so bestie, we're looking at hl_cq_inc_ptr from the Linux kernel API manual (9 section, kernel land, very serious stuff but we're gonna have fun with it). it's a tiny lil function that does one job and honestly? it ate. let's get into it 🎀

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✨ NAME ✨

hl_cq_inc_ptr — increment the ci or the pi of a cq. that's it, that's the whole vibe. no cap 🫶

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🌸 SYNOPSIS 🌸

u32 hl_cq_inc_ptr (u32 ptr );

so it takes a u32 and it gives you back a u32. short, sweet, iconic 👑

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🦋 ARGUMENTS 🦋

• ptr — the current ci or pi value of the completion queue. like, the value it has right now, before you go messing with it. lowkey important that you pass the current one, bestie 💅

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⭐ DESCRIPTION ⭐

okay so here's the tea 🍓: it increments ptr by 1. that's the main character move.

and then — plot twist — if it reaches the number of completion queue entries, it sets it to 0. so it wraps around. circular. a little loop-de-loop. 🔥

literally it's: bump by one, and if you've hit the entry count, back to zero. simple as. no notes. periodt 💀

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🌈 SEE ALSO 🌈

Kernel file ./drivers/accel/habanalabs/common/irq.c and struct hl_eqe_work(9), plus the whole squad — go read these too, they're all linked up:

• hl_eq_inc_ptr(9)
• job_finish(9)
• cs_finish(9)
• hl_irq_handler_cq(9)
• hl_irq_user_interrupt_handler(9)
• hl_irq_user_interrupt_thread_handler(9)
• hl_irq_handler_eq(9)
• hl_irq_handler_dec_abnrm(9)
• hl_cq_init(9)
• hl_cq_fini(9)
• hl_eq_init(9)
• hl_eq_fini(9)

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💡 friendly reminder from your local unix girly: hl_cq_inc_ptr only does the +1 and the wrap-to-0. anything else you're imagining is a different function, iykyk 🙈

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and that's the page!! mwah 💋 this one lives in ./drivers/accel/habanalabs/common, dated October 2026 — so yeah, future-coded of it. slay, go increment some pointers responsibly 🧚‍♀️💜