pvr_queue_cccb_fence_init(9)

💅 pvr_queue_cccb_fence_init(9) — bestie's guide to the kernel API manual ✨

okay so this is a page from the Kernel API Manual, section 9 (the kernel-functions girlies know 👑), and it's literally all about pvr_queue_cccb_fence_init. yes the name is a mouthful, no we're not scared of it. let's go 🎀

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🌸 NAME 🌸

pvr_queue_cccb_fence_init — bestie, it initializes a CCCB fence object. that's the whole job. slay. ✨

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🦋 SYNOPSIS 🦋

void pvr_queue_cccb_fence_init (struct dma_fence *fence , struct
       pvr_queue *queue );

it returns void btw, so like… nothing comes back, it just does the thing and dips. no cap. 💅

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💖 ARGUMENTS 💖

• fence — the fence you're initializing. this is the main character right here, we're setting her up 🫶
• queue — the queue this fence belongs to. yes she's got a home, she's not just floating around unattached 😭

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🧚 DESCRIPTION 🧚

so what does it actually do?? it initializes a fence that you can use to wait for CCCB space. that's the vibe check and it passed 🔥

⚠️ important bestie note: this should be called in the ::prepare_job path — fr fr, that's non-negotiable — so that the fence returned to drm_sched is valid. do it anywhere else and it's giving invalid fence energy 💀

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👑 SEE ALSO 👑

the kernel file where the magic lives, bestie:

./drivers/gpu/drm/imagination/pvr_queue.c

and the whole friend group (yes we're listing all of them, don't @ me):

pvr_queue_fence_is_ufo_backed(9), to_pvr_queue_job_fence(9), pvr_queue_fence_put(9), pvr_queue_fence_alloc(9), pvr_queue_fence_init(9), pvr_queue_job_fence_init(9), pvr_queue_fence_ctx_init(9), job_count_remaining_native_deps(9), pvr_queue_get_job_cccb_fence(9), pvr_queue_get_job_kccb_fence(9), pvr_queue_prepare_job(9), pvr_queue_update_active_state_locked(9), pvr_queue_update_active_state(9), pvr_queue_run_job(9), pvr_queue_timedout_job(9), pvr_queue_free_job(9), pvr_queue_fence_is_native(9), pvr_queue_signal_done_fences(9), pvr_queue_check_job_waiting_for_cccb_space(9), pvr_queue_process(9), init_fw_context(9), pvr_queue_cleanup_fw_context(9), pvr_queue_job_init(9), pvr_queue_job_arm(9), pvr_queue_job_cleanup(9), pvr_queue_job_push(9), pvr_queue_create(9), pvr_queue_kill(9), pvr_queue_destroy(9), pvr_queue_device_init(9), pvr_queue_device_fini(9)

like. that's a whole squad. iykyk 🌈

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mwah 💜 that's the page! this icon lives over in ./drivers/gpu/drm/imagination (the source/version tag, you know how it is), and the date on the original was October 2026 — so like, future girl summer ✨🏖️ anyway ily, go init those fences responsibly 🎀💖