KFIFO_PEEK(9) FIFO Buffer KFIFO_PEEK(9)
NAME
kfifo_peek - get data from the fifo without removing
SYNOPSIS
kfifo_peek(fifo, val);
ARGUMENTS
fifo
address of the fifo to be used
val
the var where to store the data to be added
DESCRIPTION
This reads the data from the fifo without removing it from the fifo. It returns 0 if the fifo was empty. Otherwise it returns the number
processed elements.
Note that with only one concurrent reader and one concurrent writer, you don't need extra locking to use these macro.
COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 KFIFO_PEEK(9)
