When writing Linux drivers, where can I find the prototypes or usage instructions of these API functions?

shijizai

When writing Linux drivers, where can I find the prototypes or usage instructions of these API functions? [Copy link]

When writing Linux drivers, where can I find the prototypes or usage instructions of these API functions? For example, the function register_chrdev_region for registering device numbers cannot be found by using "man register_chrdev_region", so where can I find the prototype of this function? Where can I check the parameter descriptions? I am a newbie, and I look forward to the answers from the experts. Thank you very much!

lcofjp

A quick search on the Internet found the kernel API: The Linux Kernel API , register_chrdev_region (kernel.org)

Jacktang

Linux provides a wealth of help manuals. When you need to view the parameters of a command, just use man.

The Linux man manual has many chapters below

wangerxian

You can try [man register] to see if you can find it.