mapping_base 12 arch/nds32/include/asm/vdso_timer_info.h unsigned long mapping_base; mapping_base 32 arch/nds32/kernel/vdso.c .mapping_base = EMPTY_TIMER_MAPPING, mapping_base 57 arch/nds32/kernel/vdso.c timer_mapping_base = timer_info.mapping_base; mapping_base 215 drivers/clocksource/timer-atcpit100.c timer_info.mapping_base = (unsigned long)timer_res.start;