Defined in 4 files as a macro:

• arch/arm/include/asm/cmpxchg.h, line 269 (as a macro)
• arch/powerpc/include/asm/cmpxchg.h, line 515 (as a macro)
• include/asm-generic/atomic-instrumented.h, line 1744 (as a macro)
• include/linux/atomic-fallback.h, line 58 (as a macro)

Referenced in 4 files:

• arch/arm/include/asm/cmpxchg.h, line 275
• drivers/iommu/io-pgtable-arm.c, line 343
• include/linux/atomic-fallback.h, line 57
• lib/lockref.c, line 19