jackshendrikov/ak2_lab6

AK-2 | Lab Work #6 | Allocating Memory in Linux Kernel

AK-2 | Lab Work #6

Allocating Memory in the Linux Kernel

Task:

• Declare a data structure for placement in a list that contains a field of type ktime_t in addition to the struct list_head element (include /linux/ktime.h in your linux-stable repository).
• Create a static list header variable.
• Before each greeting print, allocate memory for an instance of the declared structure, write in it the current kernel time obtained by the ktime_get() function.
• In the hello_exit() function, go through the list and print the time of each event in nanoseconds, remove the list item and free the allocated memory.
• At this stage, it is enough to allocate memory by calling ptr = kmalloc(sizeof(*ptr), GFP_KERNEL); and free it by calling kfree(ptr);
• Also add another field of type ktime_t and record the time before and after calling the print function, and on unloading of the module print the time spent on each print.