ATOMIC64_SUB_AND_TES(9) Driver Basics ATOMIC64_SUB_AND_TES(9)

NAME atomic64_sub_and_test - subtract value from variable and test result

SYNOPSIS int atomic64_sub_and_test(u64 delta, atomic64_t * ptr);

ARGUMENTS delta integer value to subtract

ptr pointer to type atomic64_t

DESCRIPTION Atomically subtracts delta from ptr and returns true if the result is zero, or false for all other cases.

COPYRIGHT Kernel Hackers Manual 2.6. November 2011 ATOMIC64_SUB_AND_TES(9)