MMCR1_GRS_L2SEL_SH   52 arch/powerpc/perf/power5+-pmu.c #define MMCR1_GRS_L2SEL_SH	46
MMCR1_GRS_L2SEL_SH   52 arch/powerpc/perf/power5-pmu.c #define MMCR1_GRS_L2SEL_SH	46