LKM

So, with that introduction to the basics of LKMs, let's dig in to see how modules get into the kernel and are managed internally.

Now let's move beyond this simple example and look at some of the kernel APIs that allow you to develop useful LKMs.

An LKM has some fundamental differences from elements that compile directly into the kernel and also typical programs.

It's even possible for an LKM to export new variables and functions that the kernel can use.

Loadable Kernel Module [LKM] is used to expand the kernel for adding new hardware or Filesystem without a system reboot.

But because an LKM can't resolve its symbols until it's loaded into the kernel, the LKM remains an ELF object.

The new naming convention helps to distinguish kernel objects (LKMs) from standard objects.

To build the LKM, use the make command as shown in Listing 4.

Listing 3 is a real LKM, albeit a simple one.

LKMs are also a popular mechanism for device drivers and filesystems in the Linux kernel.

Here's an LKM that supports both reading and writing.

Figure 1 provides view of a very simple LKM.

You can use standard object tools on LKMs (which for version 2. 6 have the suffix . ko, for kernel object).

For more information on building LKMs for the version 2. 6 kernel, check out Resources.

Application of LKM Type Flocculant in Treatment of Oil Waste Water

LKM is used only when required and when they are used, they run in the memory and when done they are removed. LKM