---
name: "kfifo_in"
section: "9"
platform: "linux"
package: "linux-manual-4.9"
version: "4.9.228-1"
release: "Debian 9 (Stretch)"
platforms: ["linux"]
url: "https://new.carta.tech/kfifo_in"
---

# kfifo\_in(9)

put data into the fifo

## NAME

kfifo\_in - put data into the fifo

## SYNOPSIS

**kfifo\_in(***fifo***,** *buf***,** *n***);**

## ARGUMENTS

*fifo*

address of the fifo to be used

*buf*

the data to be added

*n*

number of elements to be added

## DESCRIPTION

This macro copies the given buffer into the fifo and returns the number of copied elements.

Note that with only one concurrent reader and one concurrent writer, you don't need extra locking to use these macro.

## COPYRIGHT