cpu_dumpconf() is the machine-dependent interface invoked during system bootstrap to determine the dump device and initialize machine-dependent kernel core dump state. Internally,
cpu_dumpconf() will invoke
cpu_dumpsize() to calculate the size of machine-dependent kernel core dump headers.
dumpsys() is invoked by
cpu_reboot() to dump kernel physical memory onto the dump device.
dumpsys() 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() are parts of the machine-dependent interface, however they are not exported to machine-independent code.