system_has_cmpxchg_double  203 arch/arm64/include/asm/cmpxchg.h #define system_has_cmpxchg_double()     1
system_has_cmpxchg_double   64 arch/s390/include/asm/cmpxchg.h #define system_has_cmpxchg_double()	1
system_has_cmpxchg_double  113 arch/x86/include/asm/cmpxchg_32.h #define system_has_cmpxchg_double() boot_cpu_has(X86_FEATURE_CX8)
system_has_cmpxchg_double   22 arch/x86/include/asm/cmpxchg_64.h #define system_has_cmpxchg_double() boot_cpu_has(X86_FEATURE_CX16)