How can I access the kernel command line from a Linux kernel module?

Question

How can I obtain the kernel command line from a Linux kernel module?

This can be achieved by reading /proc/cmdline, but it seems like there must be an easier way to access the command line from a kernel module than to open and read a file.

Answer 1

Do you actually need to access the enture kernel command line, or just a few parameters?
You could prefix each salient parameter with your module's name.

my_module.my_variable=value

Then your kernel module can retrieve it using the module_param() macro, as described in Passing Command Line Arguments to a Module