cpu1_powerdown 334 arch/arm/mach-exynos/pm.c .cpu1_powerdown = exynos_cpu1_powerdown, cpu1_powerdown 43 drivers/cpuidle/cpuidle-exynos.c ret = dev->cpu ? exynos_cpuidle_pdata->cpu1_powerdown() cpu1_powerdown 12 include/linux/platform_data/cpuidle-exynos.h int (*cpu1_powerdown)(void);