kfifo_peek (9) - Linux Man Pages

kfifo_peek: get data from the fifo without removing

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

address where to store the data

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.

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