dma_resv_describe(9)

💅 dma_resv_describe(9) — from the Kernel API Manual, bestie ✨

okay so picture this: you're deep in the kernel, you're in the 9 section of the manual, and you just need to describe a resv object. That's literally this whole page. Let's go 🫶

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✨ NAME ✨

dma_resv_describe — dump a description of the resv object into a seq_file 🎀

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🌸 SYNOPSIS 🌸

void dma_resv_describe (struct dma_resv *obj , struct seq_file *seq );

that's it. that's the whole signature. no return value, it's giving void main character energy 💀

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🦋 ARGUMENTS 🦋

• obj — the reservation object. yeah. that one. the resv object in question 👑
• seq — the seq_file you're dumping the description into. it's the destination, it's the vibe, it's where the words go 🍓

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💖 DESCRIPTION 💖

So what does it actually do? It dumps a textual description of the fences inside a dma_resv object straight into the seq_file. That's the whole thing. Textual. Fences. dma_resv object. seq_file. Slay. ✨

no cap, that's the entire description — it's a short one and honestly? iconic for that 🌈

lowkey a tiny function but highkey useful — it's the "just tell me what's in there" button for reservation objects 💅

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🔥 SEE ALSO 🔥

the whole friend group, fr fr — go read these too:

• Kernel file ./drivers/dma-buf/dma-resv.c
• Reservation Object Overview(9)
• dma_resv_init(9)
• dma_resv_fini(9)
• dma_resv_reserve_fences(9)
• dma_resv_reset_max_fences(9)
• dma_resv_add_fence(9)
• dma_resv_replace_fences(9)
• dma_resv_iter_first_unlocked(9)
• dma_resv_iter_next_unlocked(9)
• dma_resv_iter_first(9)
• dma_resv_iter_next(9)
• dma_resv_copy_fences(9)
• dma_resv_get_fences(9)
• dma_resv_get_singleton(9)
• dma_resv_wait_timeout(9)
• dma_resv_set_deadline(9)
• dma_resv_test_signaled(9)

like I said. the whole group chat. read them all, don't leave anyone on read 🙈

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and that's the page, bestie!! brought to you by ./drivers/dma-buf, dated October 2026, and signed off by dma_resv_describe(9) itself. mwah 💋✨