CONFIG_EMULATED_CMPXCHG is not available for thedefaultarchitecture x86.
Result is shown for architecture sparc
CONFIG_EMULATED_CMPXCHG (not configurable)
configname: CONFIG_EMULATED_CMPXCHG
Linux/SPARC Kernel Configuration
└─>General machine setup
└─>EMULATED_CMPXCHG
In linux kernel since version 2.6.22 (release Date: 2007-07-08)
Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
is emulated, and therefore it is not completely atomic.
is emulated, and therefore it is not completely atomic.