kfifo_alloc (9)

kfifo_alloc(fifo, size, gfp_mask);

fifo

pointer to the fifo

size

the number of elements in the fifo, this must be a power of 2

gfp_mask

get_free_pages mask, passed to kmalloc

This macro dynamically allocates a new fifo buffer.

The numer of elements will be rounded-up to a power of 2. The fifo will be release with kfifo_free. Return 0 if no error, otherwise an error code.