Linux Device Drivers Development

Static method

Static allocation is done through the LIST_HEAD macro:

LIST_HEAD(mylist) 

The LIST_HEAD definition is as follows:

#define LIST_HEAD(name) \ 
    struct list_head name = LIST_HEAD_INIT(name) 

The following is its expansion:

#define LIST_HEAD_INIT(name) { &(name), &(name) } 

This assigns each pointer (prev and next) inside the name field to point to name itself (just like INIT_LIST_HEAD does).