vb2_core_queue_release(9)

💅 vb2_core_queue_release — the kernel API manual, bestie edition 🎀

okay so you're in the vb2_core_queue_release(9) part of the kernel API manual — welcome to the cleanup era ✨ this is the function that takes your videobuf2 queue out of the group chat, stops the stream, frees the memory, and basically says "we're done here, slay" 💜

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🌸 NAME 🌸

vb2_core_queue_release — stop streaming, release the queue and free memory

Like, all three at once. Iconic multitasking behavior, no cap 🔥

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✨ SYNOPSIS ✨

void vb2_core_queue_release (struct vb2_queue *q );

Note: it returns void — it gives you nothing back and honestly? that's main character energy 👑

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🦋 ARGUMENTS 🦋

• q — pointer to struct vb2_queue with videobuf2 queue. that's your queue bestie, the one you're about to release into the wild 🌈

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💖 DESCRIPTION 💖

okay so here's the tea ☕: this function stops streaming and performs all the necessary clean ups, including freeing video buffer memory. so it's giving "full reset", it's giving "closing the tabs", it's giving "log off and hydrate" 🍓

But listen — and this part is important — the driver is responsible for freeing the struct vb2_queue itself. 🫶

not me freeing the queue when I wasn't supposed to 😭 like bestie, that's YOUR job, the function only handles the stuff inside. don't get it twisted, fr fr.

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👑 SEE ALSO 👑

Kernel file ./include/media/videobuf2-core.h — plus the whole friend group, and yes I'm listing every single one of them because nobody gets left out 💅:

• enum vb2_memory(9)
• struct vb2_mem_ops(9)
• struct vb2_plane(9)
• enum vb2_io_modes(9)
• enum vb2_buffer_state(9)
• struct vb2_buffer(9)
• struct vb2_ops(9)
• struct vb2_buf_ops(9)
• struct vb2_queue(9)
• vb2_queue_allows_cache_hints(9)
• vb2_plane_vaddr(9)
• vb2_plane_cookie(9)
• vb2_buffer_done(9)
• vb2_discard_done(9)
• vb2_wait_for_all_buffers(9)
• vb2_core_querybuf(9)
• vb2_core_reqbufs(9)
• vb2_core_create_bufs(9)
• vb2_core_prepare_buf(9)
• vb2_core_remove_bufs(9)
• vb2_core_qbuf(9)
• vb2_core_dqbuf(9)
• vb2_core_streamon(9)
• vb2_core_streamoff(9)
• vb2_core_expbuf(9)
• vb2_core_queue_init(9)
• vb2_queue_error(9)
• vb2_mmap(9)
• vb2_get_unmapped_area(9)
• vb2_core_poll(9)
• vb2_read(9)
• vb2_write(9)
• vb2_thread_fnc(9)
• vb2_thread_start(9)
• vb2_thread_stop(9)
• vb2_is_streaming(9)
• vb2_fileio_is_active(9)
• vb2_get_num_buffers(9)
• vb2_is_busy(9)
• vb2_get_drv_priv(9)
• vb2_set_plane_payload(9)
• vb2_get_plane_payload(9)
• vb2_plane_size(9)
• vb2_start_streaming_called(9)
• vb2_clear_last_buffer_dequeued(9)
• vb2_get_buffer(9)
• vb2_buffer_in_use(9)
• vb2_verify_memory_type(9)
• vb2_request_object_is_buffer(9)
• vb2_request_buffer_cnt(9)

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and that's the whole page, bestie 🧚💜 it lives in ./include/media and it's stamped October 2026 — so go forth, release that queue, free that memory, and remember: the struct vb2_queue is yours to free. periodt 💅⭐🌈