CPU_DUMPCONF(9)

✨ NAME ✨

okay so this is the CPU_DUMPCONF(9) page from the Kernel Developer's Manual, and it's literally about machine-dependent kernel core dumps 💖

• cpu_dumpconf, cpu_dump, cpu_dumpsize, dumpsys — machine-dependent kernel core dumps 💅

🛠️ SYNOPSIS 🛠️

bestie, here's the exact include-and-prototype situation, no cap:

#include <sys/types.h>
#include <sys/systm.h>

void
cpu_dumpconf(void);

int
cpu_dump(int (*dump)(dev_t, daddr_t, void *, size_t), daddr_t *blknop);

int
cpu_dumpsize(void);

void
dumpsys(void);

💾 DESCRIPTION 💾

let's get into it 🌸

• cpu_dumpconf() — this is the machine-dependent interface that gets invoked during system bootstrap to determine the dump device and initialize machine-dependent kernel core dump state. Internally, it invokes cpu_dumpsize() to calculate the size of machine-dependent kernel core dump headers. ✨
• dumpsys() — invoked by cpu_reboot() to dump kernel physical memory onto the dump device. It invokes cpu_dump() to write the machine-dependent header to the dump device at block number *blknop, using the dump device's PIO dump routine specified by the dump argument. 💾
• cpu_dumpsize(), cpu_dump(), and dumpsys() — these are parts of the machine-dependent interface, however they are not exported to machine-independent code. 🙈

👀 SEE ALSO 👀

• cpu_reboot(9) 👑

that's the whole vibe, bestie 🫶 — Debian, May 24, 2002, CPU_DUMPCONF(9) — periodt 💅