rproc_cored...ing_sections(9)

💅 rproc_coredump_using_sections — the Kernel API Manual, section 9, bestie

Okay so real talk, this one lives in the Kernel API Manual, section 9, and its whole name is literally rproc_coredump_using_sections. Say that five times fast, I dare you. 🫶

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✨ NAME ✨

rproc_coredump_using_sections — perform coredump using section headers. That's it, that's the vibe. 💖

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🌸 SYNOPSIS 🌸

void rproc_coredump_using_sections(struct rproc *rproc);

Iconic. No return value. It just does the thing. ✨

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🎀 ARGUMENTS 🎀

• rproc — the rproc handle. That's your little main character right there, the thing you're passing in. 🦋

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🔥 DESCRIPTION 🔥

So here's what's happening, bestie, listen up. 👑

This function will generate an ELF header for the registered sections of segments — yes, an actual ELF header, she's fancy — and create a devcoredump device associated with rproc.

Then it gets interesting, because there are two paths depending on the coredump configuration:

• It will directly copy the segments from device memory to userspace, OR
• It will copy segments from device memory to a separate buffer, which can then be read by userspace.

And here's the tradeoff, no cap: the first approach avoids using extra vmalloc memory. But — and this is the part you need to remember — it will stall recovery flow until the dump is read by userspace. 😭 So like, it's cheaper on memory but it just sits there waiting. Pick your fighter. 💀

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🦋 SEE ALSO 🦋

• Kernel file ./drivers/remoteproc/remoteproc_coredump.c
• rproc_coredump_cleanup(9)
• rproc_coredump_add_segment(9)
• rproc_coredump_add_custom_segment(9)
• rproc_coredump_set_elf_info(9)
• rproc_coredump(9)

Go read them, they're all in the same friend group. 💜

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Okay that's the whole page, mwah. 🌈 This one came from the ./drivers/remoteproc corner of the world, dated October 2026, and it's filed under rproc_cored...ing_sections(9) — yes the name is truncated in the footer, she's mysterious like that. 🎀 Slay, goodbye! 💅