ATOMIC64_READ(9) Driver Basics ATOMIC64_READ(9)
NAME atomic64_read - read atomic64 variable
SYNOPSIS u64 atomic64_read(atomic64_t * ptr);
ARGUMENTS ptr pointer to type atomic64_t
DESCRIPTION Atomically reads the value of ptr and returns it.
COPYRIGHT Kernel Hackers Manual 2.6. April 2016 ATOMIC64_READ(9)