KFIFO_ALLOC(9) FIFO Buffer KFIFO_ALLOC(9)NAMEkfifo_alloc - dynamically allocates a new fifo bufferSYNOPSISkfifo_alloc(fifo, size, gfp_mask);ARGUMENTSfifo 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 kmallocDESCRIPTIONThis 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.COPYRIGHTKernel Hackers Manual 3.10 June 2014 KFIFO_ALLOC(9)