Chapter 8. Allocating Memory
far, we have used kmalloc and
kfree for the allocation and freeing of memory.
The Linux kernel offers a richer set of memory allocation primitives,
however. In this chapter, we look at other ways of using memory in
device drivers and how to optimize your system's
memory resources. We do not get into how the different architectures
actually administer memory. Modules are not involved in issues of
segmentation, paging, and so on, since the kernel offers a unified
memory management interface to the drivers. In addition, we
won't describe the internal details of memory
management in this chapter, but defer it to Chapter 15.