MIDR_VARIANT_MASK   35 arch/arm64/include/asm/cputype.h #define MIDR_VARIANT_MASK	(0xf << MIDR_VARIANT_SHIFT)
MIDR_VARIANT_MASK   13 tools/perf/arch/arm64/util/header.c #define MIDR_VARIANT_MASK       (0xf << MIDR_VARIANT_SHIFT)