Gets some data from the fifo
kfifo_out_peek(fifo, buf, n);
fifo
address of the fifo to be used
buf
pointer to the storage buffer
n
max. number of elements to get
This macro get the data from the fifo and return the numbers of elements copied. The data is not removed from the fifo.
Note that with only one concurrent reader and one concurrent writer, you don't need extra locking to use these macro.