Introduction to common Linux kernel header files

<Linux/FB. h> Macro definitions related to framebuffer, such as fb_event_blank and extern. Some common functions such as fb_blank () and struct definitions such as struct fb_fix_screeninfo and fb_var_screeninfo

<Linux/ctype. h> Defines some macros used to determine whether a character is an uppercase letter, lowercase letter, number, control character, punctuation, and so on. For example, isdigit (c) determines whether parameter C is a number, in addition, there are also case-sensitive conversion macros, such as tolower (C) and toupper (c)

<Linux/Wait. h> defines the macros and functions related to sleep/Wait and wake up for Linux processes. Note that they are process-related, not System sleep (suspend) and wake up (resume ).

<Linux/interrupt. h> defines or extern interrupt-related functions, such as request_irq, free_irq and interrupt-related struct, such as tasklet_struct,

<Linux/fs. h> defines functions and struct related to file_operation. This header file must be included when file_operation is used.

<Linux/slab. h> defines kmalloc-related functions. To use kmalloc, you must include this header file.

<ASM/uaccess. h> defines functions related to copy_to_user and copy_from_user.