atomic_dec(9) centos man page | unix.com

ATOMIC_DEC(9)							   Driver Basics						     ATOMIC_DEC(9)

NAME
       atomic_dec - decrement atomic variable

SYNOPSIS
       void atomic_dec(atomic_t * v);

ARGUMENTS
       v
	   pointer of type atomic_t

DESCRIPTION
       Atomically decrements v by 1.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							     ATOMIC_DEC(9)