Reconfiguring the Kernel
18-3.
SLIDE: Dynamic Kernel Modules
Student Notes Version 11.x of HP-UX introduced the infrastructure necessary to support dynamically loadable kernel modules (DLKMs). DLKM drivers and subsystems can be dynamically loaded into the running kernel as needed, then unloaded when no longer needed. This offers a number of advantages: High availability:
DLKMs don’t require a system reboot to add needed drivers and subsystems.
Efficiency:
DLKMs that are no longer needed by the kernel can be unloaded.
DLKM is being implemented in phases. Though the DLKM architecture is in place at version 11.0 of HP-UX, all the system drivers and subsystems are still static at this point. Subsequent releases will offer DLKM drivers and support online replacement of DLKM modules.
18-5
H3064S A.01 Š 1999 Hewlett-Packard Company