drm_gem_dmabuf_release(9)

💖 drm_gem_dmabuf_release(9) 💖

okay bestie, welcome to a page from the Kernel API Manual — it's all about the release side of dma_buf life for GEM, and yes it's lowkey iconic. 🦋

🌸 NAME 🌸

drm_gem_dmabuf_release — &dma_buf release implementation for GEM 💅

✨ SYNOPSIS ✨

here's the whole signature, bestie:

void drm_gem_dmabuf_release (struct dma_buf *dma_buf );

🎀 ARGUMENTS 🎀

• dma_buf — buffer to be released. that's the one getting the release treatment. 💖

🦋 DESCRIPTION 🦋

okay so drm_gem_dmabuf_release is the generic release function for dma_bufs exported as PRIME buffers. GEM drivers must use this in their dma_buf_ops structure as the release callback — no cap, that's the assignment. 💅

and the pairing tea? drm_gem_dmabuf_release should be used in conjunction with drm_gem_dmabuf_export. they're a matching set, periodt. 🫶

👑 SEE ALSO 👑

go read these too, bestie — iykyk:

• Kernel file ./drivers/gpu/drm/drm_prime.c overview and lifetime rules(9)
• drm_gem_dmabuf_export(9)
• drm_gem_prime_fd_to_handle(9)
• drm_gem_prime_handle_to_dmabuf(9)
• drm_gem_prime_handle_to_fd(9)
• PRIME Helpers(9)
• drm_gem_map_attach(9)
• drm_gem_map_detach(9)
• drm_gem_map_dma_buf(9)
• drm_gem_unmap_dma_buf(9)
• drm_gem_dmabuf_vmap(9)
• drm_gem_dmabuf_vunmap(9)
• drm_gem_prime_mmap(9)
• drm_gem_dmabuf_mmap(9)
• drm_prime_pages_to_sg(9)
• drm_prime_get_contiguous_size(9)
• drm_gem_prime_export(9)
• drm_gem_is_prime_exported_dma_buf(9)
• drm_gem_prime_import_dev(9)
• drm_gem_prime_import(9)
• drm_prime_sg_to_page_array(9)
• drm_prime_sg_to_dma_addr_array(9)
• drm_prime_gem_destroy(9)

mwah 💋 source/version: ./drivers/gpu/drm · date: October 2026. now go release that buffer, bestie — you got this! 🌈💖