dev_coredumpsg(9)

✨ dev_coredumpsg(9) ✨

okay bestie, welcome to the Kernel API Manual, section 9 — yes, the kernel docs can be cute too 💅 This one is all about dev_coredumpsg, and it's giving "device coredump but make it scatterlist" energy 🌸

---

🌟 NAME 🌟

dev_coredumpsg — create a device coredump that uses a scatterlist as its data parameter 🎀

---

🦋 SYNOPSIS 🦋

void dev_coredumpsg (struct device *dev , struct scatterlist *table ,
       size_t datalen , gfp_t gfp );

---

💖 ARGUMENTS 💖

• dev — the struct device for the crashed device 😭 like, the device that had a whole moment and needs its coredump collected.
• table — the dump data 📦 yes, the actual data, living in a scatterlist.
• datalen — length of the data 📏 exactly how much data we're working with.
• gfp — allocation flags 🧚 the flags used when allocating, bestie.

---

🔥 DESCRIPTION 🔥

This makes a brand-new device coredump for the device you passed in ✨

Here's the tea: if a previous coredump hasn't been read yet, the new coredump gets discarded. no cap, it just gets thrown away 🙈

The data's lifetime is handled by the device coredump framework — it's the main character here 👑 — and when the data is no longer needed, the framework will free it. so you don't have to do the cleanup yourself, periodt 💜

---

🌈 SEE ALSO 🌈

• Kernel file ./drivers/base/devcoredump.c 📁
• dev_coredumpv(9)
• devcd_free_sgtable(9)
• devcd_read_from_sgtable(9)
• dev_coredump_put(9)
• dev_coredumpm_timeout(9)

---

and that's the whole vibe, bestie 🫶 this page lives under ./drivers/base and it's dated October 2026 — iconic, honestly ⭐💖