CONFIG_NEEDS_SYSCALL_FOR_CMPXCHG is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
CONFIG_NEEDS_SYSCALL_FOR_CMPXCHG (not configurable)
configname: CONFIG_NEEDS_SYSCALL_FOR_CMPXCHG
Linux Kernel Configuration
└─>NEEDS_SYSCALL_FOR_CMPXCHG
In linux kernel since version 2.6.12
SMP on a pre-ARMv6 processor? Well OK then.
Forget about fast user space cmpxchg support.
It is just not possible.
Forget about fast user space cmpxchg support.
It is just not possible.